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#1 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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Got the heads flow tested.
I took the heads to the machine shop last week, the guy called me today. At .500 lift, they flow 225 int. and 155 exh. I was looking for more then that, but will have to go with this! Should put the HP somewhere around 450 to 460, was looking for 500. Now I got to make a choice, either go with the heads I got or buy another set. If I buy another set they will be AFR'S !
Sam
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72 LWB chevy truck. Pasadena, Texas Last edited by sam's 72; 04-10-2003 at 03:41 PM. |
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#2 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,977
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How much have you spent on the current set (including purchase price)? What mods & casting #'s?
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#3 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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I got right at $ 450.00 in them. They are 86 L98 vette heads, alum. with 2" intake valves and 1.55" exhaust valves in them, completely redone. New guides, valves, seals, springs, ported and polished.
I can't remember the casting number right off hand. Sam
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72 LWB chevy truck. Pasadena, Texas |
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#4 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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If $450 is all you've got into them total, I don't think I'd mind too much...what're a set of AFR's going for these days, especially aluminum ones?
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#5 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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AFR'S is some where around $ 1000.00 to $ 1300.00
Depends on which ones you get. Sam
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72 LWB chevy truck. Pasadena, Texas |
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#6 |
Registered User
Join Date: Aug 2002
Location: Crittenden, KY
Posts: 1,965
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Are those fuel injection heads? Will they work with a carb? That sounds awesome, I thought that AFR's were running about $2200, maybe I'm losing it, but they're pretty pricey.
Brandon |
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#7 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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No, they are not fuel injected heads. These heads came off of a L98 vette, 85' 86' carburated. When I get them back I will give you the casting numbers. They are nice heads, I was just wanting to get more HP out of them, they are good for TQ, this engine will be around 475 to 500 ftlbtq.
Sam
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72 LWB chevy truck. Pasadena, Texas |
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#8 |
Registered User
Join Date: Aug 2002
Location: Crittenden, KY
Posts: 1,965
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DAYUM. I'm not sure about half the stuff I say, so... lol. I could be wrong on some stuff. I wasnt sure if they were F.I. or not. Sounds kool, have fun. hehe
Brandon |
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#9 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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I called the shop, here is the numbers, and what Mortec say's
10088113...86-up...350..........Aluminum, 58cc, angle plug, raised "D" port exhaust, 1.94"/1.5" valves When I bought the heads, the guy had already changed out the valves in them, 2" int, 1.55" exh Sam
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72 LWB chevy truck. Pasadena, Texas Last edited by sam's 72; 04-10-2003 at 06:04 PM. |
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#10 |
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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The formula that AFR uses is. .257 x (max CFM) x (# of Cylinders) = HP potential.
.257X225X8=462.6 Thats max HP..if every thing is matched perfectly...AFRs 190 will only get you to 493
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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#11 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,977
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450$ total is a good deal. Sounds like it's going to be a nice package.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#12 |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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Um...all L98's were TPI engines. You can stick a carb intake on them no problem, though; Vortecs are the only GenI heads that need a special intake.
So technically, they're "fuelie" heads, in that they all came on a fuel injected engine originally...but you can run them either way.
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#13 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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project 1970
I think you might have miss understood, they are 86 model, not 98. These head are not fuel injected heads, this was before they went to elec. fuel injection, 84 85 and 86 model vette's came with these stock, L98'S Alum. heads Sam
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72 LWB chevy truck. Pasadena, Texas |
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#14 |
So Many Ideas, So Little Money
Join Date: Sep 2001
Location: Marshalltown, IA
Posts: 1,610
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if you got new heads you can get a Pro Action "pro lightening series" head the flows 300+ outta the box, if I'm not mistaken for like $900 bare. just an idea :-)
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72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors 71 C10 with 454 99 S-10 5.1L SBC 700R4 09 Malibu ![]() Marshalltown, Iowa |
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#15 | |
14.1 @ 96MPH
Join Date: Jul 2001
Location: Mesa, AZ
Posts: 2,811
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Quote:
But even '84 was injected, even if it was the rancid dual-TBI crossfire setup. The L98 engine came out in 1985, with the tuned-port electronic fuel injection. It stayed more or less the same until the LT1 replaced it in the Corvette in 1992, and replaced it in the Camaro/Firebird in 1993.
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#16 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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All corvettes with L98 heads were TPI fuel injected. I drove (and popped the hood) on a '86 with TPI.
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#17 |
Senior Member
Join Date: Nov 2001
Location: Pasadena, Texas, USA
Posts: 1,005
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Well hell! I didn't know that. That is what I like about this board, you can learn something on here everyday! Thanks for clearing that up.
Sam
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72 LWB chevy truck. Pasadena, Texas |
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