Gm 487x heads

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August undefined, 2024

WebOct 19, 2009 · In response to Petroholic. Some of the 487x heads came with 2.02 1.60 valves from the factory. When I did the research some sites said all 487x heads came from the factory with the bigger valves I have seen them both 1.94s and 2.02s. I cant remember the exact difference between the X heads and the regular 487s but I want to say and … WebAug 30, 2024 · Re: Ported Chevy 487x heads. by F-BIRD'88 » Sun May 29, 2016 3:56 pm. It is great that you are on the game and checking the bench flow calibration. for accuracy. You are doing a great job reguardless. it would be interesting to see some of the heads you have done (very well IMHO) like the 081's. tested on a motor eg a 355 or a 383.

487 sbc heads - Racingjunk Forums

WebMay 11, 2011 · 2,818 Posts. Discussion Starter · #1 · May 9, 2011. I'm putting my daugters 68 together and the 350 I have has the 3973487X heads. They look to be 2.02 and when I looked them up its 1971 high performance app. or truck and pass. car. I was planning on have a set of the "hump heads" gone through for $400 but these look to be in great shape. WebSep 5, 2011 · Here's an example - the 487x head you run is designed for the small tapered seat plug - 5/8 hex, .460" reach. You can get a plug with those dimensions that is a resistor plug, one that is a suppressor plug, and one that is a non-resistor plug. You can also get plugs with those dimensions that have different style tips - racing style, projected ... take note season 2

Ported Chevy 487x heads - Don Terrill’s Speed-Talk

Web2 days ago · nice set of small block 487 heads one is a 487X contrary to popular belief that the X heads were superior these heads are identical in both valve size chamber cc and port flow one head was early 71 and the … WebApr 10, 2024 · chevy small block 487x heads street race dirt car gm - $150 (cumberland) pair used 487x head 150 for pair ... Chev heads - $150 (Mt pleasant) 97chevy 305 … WebHeads are also machined for screw in studs and pushrod holes opened. Cost is $1,495.00 plus shipping. A COMPLETE set of “CNC-UnderCover Ported” Chevy Open Chamber … take note productivity notebook

Ported Chevy 487x heads - Page 6 - Don Terrill’s Speed-Talk

1971 Chevy 350 heads 487/487X circle track rat rod

WebSep 21, 2011 · NGK Spark Plugs ( USA) Inc. Technical and Training Specialist – Aftermarket Division. 46929 Magellan Drive. Wixom, MI 48393. Office: (248)-926-7107. Fax: (248)-926-6938. Email: [email protected]. ASE Certified. use this tool to search yourself if you know heat range and gap. WebDec 24, 2008 · From what I remember the "487" and "487x" heads are fairly sought after by lower end circle track racers. I know when I raced in a Street Stock class they were the most commonly used head out there. The guys who ran them paid pretty good money, so they must be one of the better GM castings *Bowties, and Vortec" were illegal. take notes on key informationWebApr 11, 2024 · Chevy 409 cylinder heads - $2,400 (Camdenton) For sale: 2 Rebuild Chevy 409 Cylinder heads 817, Heads have been checked for cracks OK. 2.25 Intake & 1.74 EX, stainless valves and hard seats. Ran them in my car for 3000 miles, Built stroker engine, Sold old long block and keep heads. These heads were built with the best parts that … twitch anzid

"WebFeb 11, 2016 · Re: Ported Chevy 487x heads. by GARY C » Thu Feb 11, 2016 5:12 am. Carnut1 wrote: Adger Smith wrote: Go back on the valve and try a 55 angle about .010-.015 wide just at the seat line on the edge of the valve. Then go to the chamber edge and break that edge with a flapper wheel. Tell us what it does with that 1204. " - Gm 487x heads

Gm 487x heads

WebJan 23, 2016 · MidgetMotorsports07 wrote: the nitro man wrote: 441, 487 & 993 are all decent heads, but the 487x is the better head. yes they are... but getting scarce! I have 3 sets left, but I have countless 882s. there is no comparison between the others and the 882's for power. They just suck period and are thin castings as well. WebJan 10, 2005 · 431 Posts. #2 · Jan 1, 2005. I think they have a 10cc larger intake chamber on them. They are 71-72 350 castings like you said, passenger and truck heads. The rest you probably know, 76cc chambers, 1.94/1.50 or 2.02/1.60 valves. They should flow around 215-225 cfm intake @ .500. Intake runner should be somewhere around 165cc, exhaust …

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WebNov 15, 2011 · 487x has induction hardened exhaust seats vs. the normal 487 head. if you put bigger valves in them, you'll need hardened seats put in the exhaust after you cut … Web380 cnc ported brodex bb chevy heads. new brodex cnc ported heads 380 . this is a set of brodex bb chevy heads brand new 380 runners 119 cc... Posted Yesterday, 1:47 PM $3,650. Farmingdale , NY . 1 ...

WebMay 7, 2012 · At best about 205cfm (with 2.02/1.6 valves). By comparison '96 Vortec truck heads are about 230 cfm. The condition of the heads is more important. Worn guides … WebShop Chevy Small Block V8, Cylinder Heads and get Free Shipping on orders over $149 at Speedway Motors. Talk to the experts. Call 800.979.0122, 7am-10pm, everyday.

WebBill Mitchell Products BMP 024020C – Cylinder Head Aluminum Chevy Small Block 255cc 64cc 23Degree 2.080″ x 1.600″ CNC PORTED. Rated 0 out of 5. Learn More. Alum 23 Degree 180cc Dart 11110010P Cylinder Head Aluminum Small Block Chevy Pro1 180cc 64cc 2.020″ x 1.600″ Angled Plug, Bare Casting. WebFeb 8, 2011 · long story short, heads went bad had them rebuilt was told everything they reused was tested and good, drove it for 2 weeks and i lost compression on a cyl, pulled …

WebAug 12, 2024 · How Fuelie Cylinder Heads Launched SBC Performance. By Mike Magda August 12, 2024. News that Trick Flow will re-engineer the classic small-block Chevy “double-hump” or “camel-back” cylinder heads in cast aluminum is reviving interest in the original Gen I platform, and is stirring up memories of great engines that were built with …

WebMar 9, 2009 · 487x 75cc 2.02 1.60 492 64cc 2.02 1.60 493 76cc 1.94 1.60 520 61cc 1.72 1.50 523 67cc 1.72 1.50 537 69cc 1.72 1.50 539 60cc 1.72 1.50 545 76cc 2.02 1.60 ... Most folks building performance engines using GM heads still prefered the earlier '746' 'Raised Plug' head for high compression engines - prefering the stronger deck over smoother … take notes with meWebMay 6, 2016 · Re: Ported Chevy 487x heads Post by Carnut1 » Fri May 06, 2016 12:32 pm steve316 wrote: If you are running a exhaust with more margin; radius chamber side of exhaust. those are very good number . take notes touchscreen powerpointWebFeb 11, 2016 · Re: Ported Chevy 487x heads. by GARY C » Thu Feb 11, 2016 5:12 am. Carnut1 wrote: Adger Smith wrote: Go back on the valve and try a 55 angle about .010 … take notes right nowWebAug 23, 2012 · 487 heads. for time and the money u spend on all add ons for the vortec ( valves springs covers intake oh yea they crack easy take your cash and buy a set of GM 292 turbo heads there the same as a dart 2 right out the box. Reply. 08-23-2012, 04:15 PM. # … take notes on microsoft edgeWebChevy small block 487X heads - $400 (Auburn) ‹ image 1 of 4 › 3195 Durant Ave. condition: excellent make / manufacturer: GM. QR Code Link to This Post. Chevy small block chevy heads. Casting 3878487X with 2.02 valves. No cracks. Call me and I'll send you better pictures. do NOT contact me with unsolicited services or offers; take notes on touch screen hp laptopWebDec 11, 2024 · Chevy Tri Five Forum. A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, … twitchaoe2WebSep 30, 2008 · 487 or 487X are good ports attached to a poor chamber. Anything you gain in breahing is lost to a slow, detonation prone burn. However, they make a good blower head. Also, still required in some racing classes and somewhat rare as a result of all the short trackers hunting them down. Bogie. take notes touchscreen windows 1