cfm on stock L98 head

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Sep 4, 2001 | 08:25 PM

88 350 tpi formula

Thread Starter

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From: WI,USA

Car: 89 FORMULA 350, 91 Z28 Convertible

Engine: ls1, LB9

Transmission: t56, Auto

Axle/Gears: S60/ 3.73

cfm on stock L98 head

does any one know what the cfm flow is on a stock l98 head is and at what lift that would be? I had it but, can't find it any more.

Sep 4, 2001 | 11:03 PM

91banditt2

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From: Cincinnati,Ohio

Car: 1991 BandittII Firebird

Engine: 5.7 HSR

Transmission: 700R4

Axle/Gears: 3.27 9 bolt

i know what the runner size are
iron L98 heads have a 155cc runner
alum.L98 heads have a 164cc runner

------------------
1991 banditt2 #130 of 600
Project 350 TPI Banditt II
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Sep 6, 2001 | 09:41 PM

88 350 tpi formula

Thread Starter

Supreme Member

iTrader: (9)

Joined: Dec 1999

Posts: 3,544

Likes: 19

From: WI,USA

Car: 89 FORMULA 350, 91 Z28 Convertible

Engine: ls1, LB9

Transmission: t56, Auto

Axle/Gears: S60/ 3.73

btt

Sep 7, 2001 | 09:31 AM

BadSS

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From: USA

GM L98 163cc Intake 58cc Chamber
Lift ---- Intake - Exhaust
.100 ---- 56 ------- 52
.200 --- 120 ------ 120
.300 --- 160 ------ 133
.400 --- 186 ------ 150
.500 --- 196 ------ 170
.600 --- 199 ------ 175

From CHP article posted at
http://everythingnova.homestead.com/headflow1.html

Sep 7, 2001 | 09:39 PM

88 350 tpi formula

Thread Starter

Supreme Member

iTrader: (9)

Joined: Dec 1999

Posts: 3,544

Likes: 19

From: WI,USA

Car: 89 FORMULA 350, 91 Z28 Convertible

Engine: ls1, LB9

Transmission: t56, Auto

Axle/Gears: S60/ 3.73

That is just what I was looking for. YOU THE MAN!

Sep 8, 2001 | 02:07 PM

Kevin91Z

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From: Orange, SoCal

Car: 1990 Pontiac Trans Am

Engine: 355 TPI siamesed runners

Transmission: Tremec T56

Axle/Gears: 12-Bolt 3.73

Remember thats the info for the aluminum Corvette L98/ZZ4 heads.

I havent seen any flow info the on iron f-body L98 heads.

------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
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