Flow numbers on L98 corvette heads?
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Supreme Member
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Posts: 1,668
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From: Dale City, VA
Car: 91 GTA and 85 IROC
Engine: 355
Transmission: gear jammer
Axle/Gears: 4.11
Flow numbers on L98 corvette heads?
I was trying to find out what they were so I could plug them into desktop dyno. Thinking about some AFR 190,195,or something else. I'm not sure yet. That'll be the next big thing for my car. Then I'll just save for the cage and fire jacket.
Senior Member
Joined: Jul 2001
Posts: 649
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From: San Rafael, CA
Car: 1988 Trans Am GTA
Engine: 5.7L TPI (L98)
Transmission: 700RJunk
here you go
intake
lift cfm
.050 29
.100 56
.200 120
.300 160
.400 186
.500 196
.600 199
exhaust
lift cfm
.050 27
.100 52
.200 104
.300 133
.400 150
.500 170
.600 175
intake
lift cfm
.050 29
.100 56
.200 120
.300 160
.400 186
.500 196
.600 199
exhaust
lift cfm
.050 27
.100 52
.200 104
.300 133
.400 150
.500 170
.600 175
Supreme Member
Joined: Jan 2001
Posts: 7,164
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I'd check the Pro Lightnings, if you can swing the price, cheaper than AFR though, info here, www.procylinders.com
Thread Starter
Supreme Member
iTrader: (1)
Joined: Jun 2001
Posts: 1,668
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From: Dale City, VA
Car: 91 GTA and 85 IROC
Engine: 355
Transmission: gear jammer
Axle/Gears: 4.11
WOW!
I didn't think they were that good. Thanks guys.
I tried your link but it didn't work.
I didn't think they were that good. Thanks guys.
I tried your link but it didn't work.
Junior Member
Joined: Nov 2002
Posts: 51
Likes: 0
From: Alaska
Here are a few of the more common heads, and how they flow....
http://purplesagetradingpost.com/sum...fo/heads1.html
http://purplesagetradingpost.com/sum...fo/heads1.html
Member
Joined: Sep 2002
Posts: 234
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From: Jacksonville, Tx
Car: 91 RS, 00 TA Ram Air, 86 IROC
Engine: 305 tbi, LS1, 355
Transmission: 700R4, 4L60E, 700R4 NonLU
Also check out www.chevyhiperformance.com They have flowbench data on just about every head available. They also compare aluminum to cast iron. Hope this helps. This is where I got all my cylinder head info for my desktop dyno.:rockon:
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Supreme Member
Joined: Sep 2001
Posts: 6,111
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Here's and interesting page about some home ported
iron L-98 heads
Before and after flow test figures too.
http://www.fl-thirdgen.org/head_porting.htm
iron L-98 heads
Before and after flow test figures too.
http://www.fl-thirdgen.org/head_porting.htm
Supreme Member
Joined: Mar 2001
Posts: 2,047
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From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
What? No votes for the TFS heads? If you look at their flow per $ ratio, they are quite good as well........
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