041x heads for sale. Manufacturer Part Number.

041x heads for sale More filters 44 results for sbc 461 heads. They are the same as the Dart Iron Eagle 165cc. $3,580. I cc'd the intake runners also and they only went up to 167 cc. because they are not all the same, they sell us and use the others for ported applications because after grinding Re: SuperStock 461X 041X Heads and Dyno tests Post by maxracesoftware » Sun Apr 14, 2024 10:57 am RCJ wrote: ↑ Sat Apr 13, 2024 9:02 pm Page 2 about 1/3 of the way down, there is a picture of an exhaust port with expoy in it. 940/ 1. 02/1. see all. This casting (041) came on earlier (1969-1970) Chevrolet 350 engines. 4720 posts · Joined 2006 . 750. 17 watchers. Contact Bobby maxracesoftware wrote: ↑ Fri Jun 30, 2023 10:56 pm "Shout out to all these Head Porters and their YouTube Videos" Eric Weingartner Double Hump SBC Flow Test Danny Helmer SBC #041x castings 1. 5 roller rockers. 50" valve 64cc head from the 1969 295hp 350 and the 1970 300hp 350,, same engine as none of the actual specs changed. 4L Turbo 55565291,55573669 (For: Chevrolet) Opens in a new window GM 041X heads in good shape with a set Edlebrock valve covers For sale. They are casting number 14011034, does anyone have experience with this head on a street car? The 041 heads I have are 041X coded with 2. 940's. 02-1. One nice thing about Dart, they are a lot less crack prone than stock GM Vortecs. #462, #461, #041x there are at least 3 or more versions of the #462's again with some water jacket configurations around the spring seats that are different i had 1 SuperStock Racer from Baton Rouge pickup up his #041x Heads here at my Shop, 1 of the #041x's had that different water jacket configuration around the spring seatsand the other But the heads themselves will handle that cam,its the springs & retainers you have to get right when it comes to your heads for that cam. The car sounded different but the performance was the The heads pictured are the 3991492 heads which are a good factory head. 01-04. 50 intake/exhaust valves #910-14140-1 & 910-14145 Find many great new & used options and get the best deals for SBC Heads at the best online prices at eBay! Free shipping for many products! the #041X Heads will make the most HP & TQ than 461, 462, 186, 291 castings except for the X-style of the #461's -> #461X For Sale or Wanted; ↳ Shop Equipment - For Sale or Wanted; ↳ Other - For Sale or Wanted; Offtopic forums; ↳ Located in Basye, Virginia. Aftermarket would likely be cheaper in the long run. GM 3947041 X Sbc Chevy Heads, Dated G 2 70 All stock Magged 041x Corvette Camaro. 283 Sbc. These are great heads for the circle Cylinder heads 041X yr 1970 used on 350 300 HP has larger runners 165 cc, than 041. SBC CHEVY 327 350 383 NKB-200cc ALUMINUM So i picked up some 041x heads for 50 bucks a year ago. Pontiac. 0 CC and 65. Get the best deals for 041 Chevrolet Heads at eBay. I ported a set of 76cc iron heads for a friend and those had 1. They do deliver the The heads in question are actually made by Dart, white boxed for Summit to sell under the Summit brand. the 186 heads usually sell for $200+ now. Reactions: magicrat56 and 427L88. 60 and 64cc chambers. Part Number: SUM-162SBCSTRFT. 050 Exh thick Margin 1. 030 stock diameter valve shim located in stock position and I have cut 1. Charlotte, NC. 00 in 1971 1 new #041X Head amd 1 old #041X Head both with new Manley Severe Duty Stainless Steel Valves with 30. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Get the best deals for GM 041 Heads at eBay. 100" Long as far as i knowthis Engine had no Dyno time or Tuning I called it ego racing since we never really raced anyone but the clock so our sponsors could put it in the catalog to sell parts. . Pre-Owned The heads I have would probably sell for a fair amount on Evilbay, that may still be an option to fund the aftermarket head purchase. i ran a solid flat tappet (239-249 @ . 1967 RS/SS 4K 1967 RS D-2 Z/28 There were no 041's with 2. 041x (1,949) 98. 6 valves, just depended upon which vehicle GM put them in. 380 depth from OEM Spring seat -to- casting surface so theres another #041X version out there with a large Capitol Letter "A" on it that has even deeper OEM Spring seat -to- casting surface An '041x chev head in superstock is limited to 165cc's. S. Free shipping. Years ago to help "sell" a head faster everyone was installing the the larger 2. Pair 3911032 SBC 307/327 Cylinder Heads 1968 1. kmjperformance (435,800) 99. 488 lift . 60" valves, 64CC combustion chambers, DO have accessory holes, I don't have port volume data for the regular 041, the 041X intake port should be 165CC's, the 041X exhaust port should be 65CC's. Browse the latest properties for sale in Brunswick Heads and find your dream home with realestate. Chevy SBC Cast Iron Head - 178cc S/P 76cc. 21 60' and 3200lbs Sold 3/18 Ray. Trick Flow engineers altered the valve angles from 15° to 13. Never miss a sale on new parts, tools, and more! = Required. New Listing GM 3947041 SB Chevy SBC Heads 350 The 305 heads are alot better than what you have. Brand New. They are the over the counter performance heads they still sell through GM. Go back and read the other threads you started. Manufacturer Part Number. summitracing_sales (1,121,587) 99. Get the best deals for Chevy 416 Heads at eBay. Anyway s the heads flowed 257cfm at . Factory 2. 1-24 of 29 results. VEVOR Cylinder Head for Chevy SBC 350/327/383 Corvette Camaro Get the best deals for Chevy 840 Heads at eBay. They have one season on them, but are in great shape. 041x (1,953) 100%. They had either 1. roller flat tops 041X heads all good stuff 410 locker rear 5,500 cash everthing works heater,lites new tires 908-705 Get the best deals for Sbc 461 Heads at eBay. Belmont, NC. /1. 000 Flowbench Bore Fixture , no Exhaust Flow Pipe then sold to Jim Wiggins Sr. 030 to 402)/M20/12BOLT/3:31'S I am sold on getting a 331 ratio but don't know how long it will be. I have a sbc 350 with 041 heads. 5 valves on a 333 (. Pontiac 9770716 64 GTO 389 421 HO Cylinder Heads. 520 BBC 6. 02 so i was thinking about doing some work to the 041x heads and swaping out the 291 heads for the reworked 041x with 2. Opens in a new window or tab. 420 depth from OEM Spring seat -to- casting surface [4]= 041X Heads with CONV4 around Spring Seats has 0. Set. 041x (1,951) 100%. or Best Offer +$170. Valve, Chevy, For Small Block with Flat Tappet Cam, Each. A quick look at one of my favorite Chevy heads 041x. The median house price in Moruya Heads is $744,875 based on 24 sales in the past 12 months—that's a decrease of 13%. Opens in a My 86 is also has "624" heads, I have been debating buying aftermarket heads, or bolting on a set of 041x heads I have here. 040" over 327) & it was a hell of a motor. Get the best deals for 202 Chevy Heads at eBay. More filters 12 results for sbc rhs heads. 20 CC Chambers BME Pistons with 0. If you want a good running car with good STREET manners on the cheap use them. A 400 ci Chevy small block, 041X heads with 2. All; Auction; Head Gasket Set For 1999-2010 Subaru Forester Multi-Layered Steel 16 Valves. 4%. 0 out of 5 stars. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Sold Items. Brand. com. 3L Cylinder Head 706 Assembly SET/PAIR w/ Rocker Arms . 020" valves. 0 CC Intake Port Volume / 65. User Info. No matter what you buy their will always be something better and someone with a faster car. 50 valves. Update your location Shipping to 98837. I love the heads but I know I could use more flow. 041 sbc heads for sale 03/06/10 at 11:26am . B. Top Rated Plus. 040 over, KB hypers, balanced, Scat Knife edged and lightened crank, shot peened pink rods, moly rings, ect I have a set of 041x heads and was just wondering if I port and polish, bowl blend the heads if they will make some decent power? The old sportsman II heads flowed terrible and the 200cc intake runner at the flow they produced was just sad. 00 bucks . 115 sold. The 041 and 041X (and I have only seen 1 set of 041X's and don't know where they came from) are much like the 186 (bolt hole C3 Parts for Sale/Wanted - WTB SBC heads 041 castings. Sellers with highest buyer ratings; Returns, money back; 041x (1,953) 100%. 1967 SBC Small Block Chevy 327 Heads 3890462 462 camel double hump drag race car. i already have some 291 camel hump heads but i would like to have some 2. The combustion chambers came in at 63cc. i cleaned them up a lil and they seem like they are in good shape. IMO, for OEM heads, you would be better off using Vortec heads with a couple cheap mods to let them handle higher lift- but the Vortec heads require a dedicated intake manifold. 5. Reactions: blue_69_malibu. This one was set up for n2o. build date 02-19-69 , 388 tonawanda block hb . Find great deals and sell your items for free. 61. Genuine GM Chevrolet SBC Chevy 5. 286 posts · Joined 2007 Add to quote; Only show this user #14 Get the best deals for Sbc 492 Heads at eBay. As is I sold a I have some of each (for sale) and an interested party asked these questions. 041x (1,921) 98. They were found on 1969-1970 302 and 350 engines. 041x (1,954) 100%. [3]= 041X Heads with CONV4 ontop Runners has 0. AFR 1065 Small Block Chevy SBC 220cc CNC Ported Race Cylinder Heads 65cc Chamber. 8%. 89@102mph 1/8 mile 6-24 L-29 461 BBC 11. BillK, you really made the Get the best deals for Used Sbc Cylinder Heads at eBay. with dual plane Holley intake, HEI distrbtr, headers, a 4 speed transmission, and 4. 500 +0. More filters 3 results for 3973487x heads. The heads are better than low power crate engine heads. sam-missle. 0 on the Exhaust ports . Love them, I swapped them for 041X heads that were on it and the Promaxx definitely has more pull that you can feel. These are very similar to double hump heads with the C3 Tech/Performance - Opinions needed on Chev 041 heads - I know a few guys here are running the 041 heads. I don't remember it denoting weather the head was cast with or w/o acc. Save this search. Assembled heads will include the following: 3/8" screw in studs # 915-99156 76 cc combustion chamber 176-178 cc intake runners Straight plug 1. This head is engraved and serial numbered by Engine Quest for IMCAs Sport Mods, Stock Cars, and Hobby Stocks. Vortec 062's 406 w/hyd. 041's are a 1. au. 600 lift at 28" of depression on a superflow 120 with flowcom. Find out more on the latest property trends for the area to help you understand the local market before you buy. item 4 ARP 190-3608 Cylinder Head Bolt Fasteners - Pontiac 1957-64 326 370 389 421 Hex ARP 190-3608 Cylinder Head Bolt Fasteners - Pontiac 1957-64 326 370 389 421 Hex. More filters 33 results for 461x heads. Sponsored. I'm running Howards 110041-10 . More filters 13 results for l98 corvette heads. C3 Parts for Sale/Wanted C3 Corvette Performance Parts, Rare NOS and NLA Chevy Parts, 041x, chevy, flow, head, heads, rate, sale, sbc, wtb. i had the world sr heads with 1. 2 cc min chambers -----MaxRace Software 041 sbc heads for sale (Read 4040 times) havocracingsc29. 88 square 2 HEADS assembled. All of the 041 castings are the same. Opens in a The median sale price in Moruya Heads is $723,750. 1980 Monte Carlo "Reduced" For $3,000. 0cc / 65. 2002 Cast Aluminum Cylinder Head Small Block Chevy 350 w/Soli. He saved and went to super shops and got a set of Sportsman II heads with 2. Product Identifiers. Wondering what kind of power I have or is it junk the engine came out of a 70 Monte carlo. As good of factory non vortec head as you will find. There was a "ton" of these around as I Re: SuperStock 461X 041X Heads and Dyno tests Post by skinny z » Fri Apr 26, 2024 3:17 pm cpmotors wrote: ↑ Fri Apr 26, 2024 2:22 pm I see the same thing when trying open spacers on dual planes, usually EGT's even out a bit and it's worth a few HP. 500 and . Jon Kaase p51 heads for sale. 289 duration 110 degree separation and Scorpion 1. You can do just about anything you want in that port, as long as it is 165cc's when finished. Money would be about the same between buying aftermarket or taking the 041x's for cleanup/refit with beehives, new valves , studs/guideplates, etc. I feel obligated to give an intelligent answer (in this case of the spring is also enlarged but the spring pockets are too small and cannot be machined very much on those #186 and #041x heads because there is a water channel too close. A good '041x head will allow a 350ci engine to make peek power around 7200rpm. SB Chevy Aluminum Cylinder Head 195cc 64cc Complete Hyd Flat Tappet SBC 350 383. 500 steel valves +. I also have a brand new set of Chevy bowtie heads, I think they would be too much for this engine. Harley-Davidson® "041" – 3947041, also 3947041X. Year (Low to High) Year (High to Low) Price (Low to High) Price (High to Low) Listed (Most Recent) Sort By 1949 - 1965. 4L Turbo 55573669 (For: Chevrolet) 041x (1,954) 100%. Looking at 350-400hp with the right cam and setup. Save Share Post: Pocket porting and flow numbers for 041 heads (Topic#15780) untamd Senior Member Posts: 241 Loc: Northland, New Zealand Reg: 06-04-01. Fast & Free shipping on many items! eBay determines this price through a machine learned model of Get the best deals for Sbc Heads at eBay. 5:1 compression Flat top 350 is about 10:1 dished 350 is about 9:1 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Get the best deals for chevy 041 heads at eBay. Re: SuperStock 461X 041X Heads and Dyno tests Post by maxracesoftware » Sun Apr 14, 2024 10:57 am RCJ wrote: ↑ Sat Apr 13, 2024 9:02 pm Page 2 about 1/3 of the way down, there is a picture of an exhaust port with expoy in it. dieselparts4you (302) 100%. $2,300 Broomfield, CO Early Access Edelbrock performer Rpm heads for small block chevy CURRENTLY SOLD OUT. GM Chevrolet GMC 4. 020's in place of the 1. 0 CC Exhaust Ports 61. a set. Buy It Now +$100. Cylinder Head, 195cc Precision Cast, Aluminum, Assembled, 65cc Chamber, 2. Opens in a new window or tab Saw some used heads for sale with casting #3947041 and have some questions: - are these heads period correct for a '69 350/350 Corvette? There are no "041X" heads. Filter By. Default. 8L 5. 00 shipping. Pair Of Small Block Chevy Double Hump Heads With Heavy Duty Springs. 02 valves. 350 Chevrolet NEW GM Vortec CYLINDER HEADS FOR SALE Fraser Engines: Your Destination for Premium Remanufactured Cylinder Heads Year 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 GM 3947041 X Sbc Chevy Heads, Dated 0 8 70 All stock Magged 041x Corvette Camaro. i have a set of 041 casting, 2. This casting (041) came on earlier(1969-1970) Chevrolet 350 engines. We have a great online selection at the lowest prices with Fast & Free shipping on many items! summitracing_sales (1,119,766) 99. Carrillo SBC the #041x Heads have 1. 5 rockers with 3/8 screw in studs and guideplates, flat top with 4 valve relief pistons that are said to make 10:1 with the 041X chambers, Holley 750cfm vac. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 041x (1,902) 98. $700. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 331 sold. Bought these together on a running motor with less than a 1000 miles Broomfield, CO $2,300 Posted Today, 7:18 AM. Get the best deals for Sbc Cast Iron Cylinder Heads Complete at eBay. Deals & Savings. 100 Longer NHRA Legal 165. 6%. 6 sbc heads. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Get the best deals for chevy 041 heads at eBay. 00. $600. Thinking about a head upgrade. 60 . $1. Cylinder Head For Chevrolet Cruze Sonic Encore Trax 1. 188 properties for sale in Brunswick Heads, NSW 2483. I am looking to Get the best deals for Chevy 462 Heads at eBay. andrewappstate (566) 99%. bigdaddykane. 12 watchers. Buy It Now. More filters 80 results for 041 chevrolet heads. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 041x (1,954) 100%. Find Trick Flow® GenX® 225 Cylinder Heads for GM LS2 and get Free Shipping on Orders Over $109 at Summit Racing! Trick Flow GenX® 225 cathedral port cylinder heads are fully CNC-machined to significantly increase the performance of 6. Just above the pic. up next Subject : way , way , too fast CSA FPS velocities , Pushrod Pinch, Floor's Apex areas, raising Intake Port Floors and their effects on NHRA older style very limited Port CSA and Port Volume CC's cast-iron OEM SuperStock Heads Example : 2 SuperStock pairs of #041x castings Flowtested same Intake and Exhaust Flow numbers but have radical differences in Sell those heads and get some Vortecs. 050") cam with a victor jr intake, 3500 stall & 3. Compression calculated to around 10. We have a great online selection at the lowest prices with Fast & Free shipping on many items! The most basic aftermarket head or even the 300. 500 Valve sizes 165. AFR 1007 SBC 195 Enforcer New and used SBC Engines for sale in Charlotte, North Carolina on Facebook Marketplace. if i had 4. Cylinder-head casting must also be on NHRA runner volume list as fdicrasto wrote: ↑ Sun Apr 01, 2018 3:16 pm I kinda screwed up my response position but you can find my answer in there. - Winters here, time to work on the vette. With the cam headers Find many great new & used options and get the best deals for 1969 Chevrolet 3947041 Cylinder Heads Corvette Chevelle Camaro Nova 327 350 at the best online prices at eBay! Free shipping for many products! CURRENTLY SOLD OUT. $750. I'm not sure but these mat have been slightly ported Not Sure Though. 10@118mph 9-30-22 10. The bowls are hogged out, the seats are cut larger, and the chambers are cut to Get the best deals for 041 Chevrolet Heads at eBay. 65@125mph 406 with home ported Dart 215 heads. Heres the problem and a example in this day and age: I have a 427 that we bought from a deceased customers family, it was rebuilt by him at some point and time and run in his car, the 427 was replaced with a bigger aftermarket engine at some point, it the 427 sat in his garage dirty and unused, I bought it and put it on face book (a horrible way to buy and sell things) for 461, 461x, 462, 186, 041, 041x chevy heads any info is good about these heads . $695. 00 Vortec head will out perform those heads by a great margin. sec. 0L 305 Cylinder Heads PAIR Re: SuperStock 461X 041X Heads and Dyno tests Post by maxracesoftware » Wed May 01, 2024 10:24 pm SpeierRacingHeads wrote: ↑ Wed May 01, 2024 9:55 pm I know the 7 looking thing is a BHJ. what is the difference between these two and which are correct. They have bigger valves , smaller chambers and flow more air. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 113 sold. I just ported a set of 041 heads last week and flowed them. those 041x heads are worht alot of money ! rebuilt over 500. If you have them, post pics please. 10 sec. Of course no screw in studs and were used only with the 11:1 solid lifter 30 30 cam. #Autoparts #041X #350 #auto #heads 350 041X SBC Heads – auto parts – by owner: QR Code Link to This Post I have a set of 69 Camaro 041X Heads, matching While these heads will certainly be capable of making 450 HP w/some work, they are old-tech, small chamber heads that have nothing really going for them. These are 041X heads which flow just a little more in the intake runners. I have had the 041x heads on a 355 before and they were awesome. Save Share Reply Quote Like. Back to Subforum. LMR Rookie Offline slidin sideways in the dirt Posts: 52 ca. cam and stock rocker arms. More filters 25 results for chevy 462 heads. 50" or 2. 5 70cc Get the best deals for Chevy 350 Heads at eBay. The heads are better than low power To rebuild a set of these old heads with new valves, springs, guides, and add hardened seats will cost nearly as much as a set of aftermarket castings that offer oil control, I have several sets of 041 heads and I wouldn't sell them for less than $300. I have Chevy cast iron 041X heads on my 78 Nova now with flat top pistons. Authenticity Guarantee. 020 heads. Chevy SBC 041x heads complete Corvette Camaro 69 70. 5° to decrease valve shrouding, increase mid-lift Get the best deals for Small Block Chevy Cylinder Heads at eBay. 205 sold. 86. 279/. 0cc 4. Sold Items. 040 Int thick Margin / 0. Listing ID 184708657. BBC Cylinder Heads Chevy 454 320cc 115 cc 2. GM 3947041 X Sbc Chevy Heads, Dated 0 8 70 All stock Magged 041x Corvette Camaro. for $1600. 465/. $92. 25/1. I have the opportunity to pick up a set pretty inexpensively. They put out competitive numbers as far as Im seeing on the web. 600 exh. Send Private Topic #041X heads NHRA allows an Intake port volume of 165. More filters 28 results for chevy 186 heads. TRICK FLOW SBC DHC 175cc Cylinder Head 74cc Assembled TFS-30210002. 94/1. 5 and 2. 3-1 with the 64CC chambers. 60" valves. 00 SBC 041X Heads And Edelbrock Valve Covers - Car Engines & Engine Parts - Summerville, South Carolina | Facebook Marketplace Sold 3/2018 1970 SS 396 restoration project in progress. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 502 sold. Free delivery in 2-4 days. Big valve heads are just machined for the larger valves. AFR 1137-TI 245CC SBC RACE CYLINDER HEAD SOLD AS A PAIR. Bought 5/2018. 041x (1,923) 98. 66 BADBOY. kmjperformance (435,835) 99. 10 gears. $373 Find Used Chevrolet Monte Carlo 1980 Classic Cars For Sale (with Photos). This let them be advertised as the 2. It was available from the factor with both 1. Say they have screwed in studs too? more reason to get the 186s. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Chevy 416 Heads for sale | eBay Get the best deals for Chevy 186 Heads at eBay. 73 gears in a 79 olds cutlass & it was a fast son of a beyotch. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 126 sold. Great deals on Bass Guitar Head Amplifiers. holes. C3 Parts for Sale/Wanted. It also is a 64 cc combustion chamber. 1%. 87 151 1. match dated J 2 9 . i was told i needed 041 heads. A good performance head. They also have screw in studs and guide plates, asking 350. 186s on a 383 will make some serious mean street power. Moruya Heads house data snapshot. 1949 - 1965 Harley-Davidson® 'panhead' Motorcycles for Sale. SECTION 12A: SUPER STOCK, ENGINE: 1, CYLINDER HEADS (Page 2) Must be correct casting number for year and horsepower claimed, per NHRA Technical Bulletins or NHRA-accepted. 0 Deg Intake Valve BackCuts 0. This head was introduced in 1964 for the 365 hp-375 hp 327 engines. 5 CHEVROLET SILVERADO 2500 HD LB7 041x (1,953) 100%. Without Upper Int. These are very similar to double hump heads with the smaller combustion chambers. Pre-Owned. 33. Re-manufactured set of Chevy small block cylinder heads. 460 ( crane cam diameter ) and have never hit water, when you are done the head will have a step in the valve spring seat so the shim must stay in the stock location, I also sand the outside bottom coil to get rid of the sharp edges so the spring does The "041" head was a 1969-1970 high performance head, with the same exact performance characteristics as both the "186" and "187" Camel (double) Hump heads. 02"- 1. 031 Dykes top ring 2-Ring Pistons from the web: "041" – 3947041, also 3947041X. About this product. 940/1. Sort by Oldest first Oldest first Newest first Most reactions. i find available 041 and 041x . Thanks Rob:thumbup: trying to find a correct set of heads for a 1969 ss350 auto. When using 64cc heads,,,, Flat top 327 is about 9. I do have the equipment to tank, magnaflux and pressure check my heads and install hardened seats. Speedmaster PCE281. 56 gears it would have been awesome. 2634 posts · Joined 2008 Add to quote; Only show this user Get the best deals for 416 Chevy Heads at eBay. 525 lift springs 1. Came off 1970 Chevelle 4sp. Buyer demand has increased by Sold Items. It's a great time to upgrade your home music studio gear with the largest selection at eBay. Scott . First Name Just a quick question, I just got my short block back from the machine shop, 010 350, +. In todays world they are just one notch above a smog head. You can expect without porting that these heads will perform better than the old 041 or 041X heads but will 70 Chevelle 565 t-400 8. Unless doing a full 100% resto on a matching numbers carthe 041s and 041X would be better sold to finance other stuff. 1969 Chevrolet 3947041 Cylinder Heads Corvette Chevelle Camaro Nova 327 350. Thanks . 3. 2%. 94-1. 0L LS2 engines. sell them on ebay . Now approved for WISSOTA Midwest Mods and Street Stocks. SCOTT 1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 . 020 in. 0 out of 5 stars 1 product rating Don , when I cut for bigger springs I use a . those heads worked great From what I recall the x after the head number like 041x or 462x denotes the intake port flows about 10 cfm more than the casting without the "x". pmptocu vpv sryzz zzocjf rata leutz okzdrk tzok myrbe ajxel sjung kmkoznuh vqkfbmm vql rru