Lt1 head & intake cam advice?
Thread Starter
Junior Member
Joined: Aug 2003
Posts: 60
Likes: 0
From: San Antonio,Tx
Car: 91 Firebird Dark Green
Engine: 350 Victor Jr. 2V 2000 CFM TB EFI
Transmission: 700R4 BM 2500 stall
Axle/Gears: 3.73 Zexel torque sensing Posi
Lt1 head & intake cam advice?
While I've got the eng out (l98) of the Firebird (91/TPI). I've decided to go thru it since the whole quick in/out didn't happen and I've got beater to drive daily.
I'm going to do the LT1 top end conversion (heads and Intake). What I hope is for some advice on cam selection.
STOCK L98:INT.202/EXH.206 = LIFT.403/.415 = LS115DEG
H.O. ZZ4 : INT.208/EXH.221 = LIFT.474/.510 = LS112DEG
LT1/4 HOT : INT.218/EXH.228 = LIFT.525/.525 = LS112DEG
Basiclly a stock type rebuild on the lower end, arp rod bolts, main studs, hyperuetic (?) pistons, ect. A good DD set but with pwr output more inline with some of the newer eng. I'd like to see something around 300hp. As it stands ZZ4 looks pretty good and the price is right.
I'm going to do the LT1 top end conversion (heads and Intake). What I hope is for some advice on cam selection.
STOCK L98:INT.202/EXH.206 = LIFT.403/.415 = LS115DEG
H.O. ZZ4 : INT.208/EXH.221 = LIFT.474/.510 = LS112DEG
LT1/4 HOT : INT.218/EXH.228 = LIFT.525/.525 = LS112DEG
Basiclly a stock type rebuild on the lower end, arp rod bolts, main studs, hyperuetic (?) pistons, ect. A good DD set but with pwr output more inline with some of the newer eng. I'd like to see something around 300hp. As it stands ZZ4 looks pretty good and the price is right.
Thread Starter
Junior Member
Joined: Aug 2003
Posts: 60
Likes: 0
From: San Antonio,Tx
Car: 91 Firebird Dark Green
Engine: 350 Victor Jr. 2V 2000 CFM TB EFI
Transmission: 700R4 BM 2500 stall
Axle/Gears: 3.73 Zexel torque sensing Posi
Those numbers are w/1.5 rockers. I would actually be using some 1.65 self aligning alum. RR.
Thread Starter
Junior Member
Joined: Aug 2003
Posts: 60
Likes: 0
From: San Antonio,Tx
Car: 91 Firebird Dark Green
Engine: 350 Victor Jr. 2V 2000 CFM TB EFI
Transmission: 700R4 BM 2500 stall
Axle/Gears: 3.73 Zexel torque sensing Posi
Re: Lt1 head & intake cam advice?
Originally posted by firehawkslplus
While I've got the eng out (l98) of the Firebird (91/TPI). I've decided to go thru it since the whole quick in/out didn't happen and I've got beater to drive daily.
I'm going to do the LT1 top end conversion (heads and Intake). What I hope is for some advice on cam selection.
STOCK L98:INT.202/EXH.206 = LIFT.403/.415 = LS115DEG
H.O. ZZ4 : INT.208/EXH.221 = LIFT.474/.510 = LS112DEG
LT1/4 HOT : INT.218/EXH.228 = LIFT.525/.525 = LS112DEG
Basiclly a stock type rebuild on the lower end, arp rod bolts, main studs, hyperuetic (?) pistons, ect. A good DD set but with pwr output more inline with some of the newer eng. I'd like to see something around 300hp. As it stands ZZ4 looks pretty good and the price is right.
While I've got the eng out (l98) of the Firebird (91/TPI). I've decided to go thru it since the whole quick in/out didn't happen and I've got beater to drive daily.
I'm going to do the LT1 top end conversion (heads and Intake). What I hope is for some advice on cam selection.
STOCK L98:INT.202/EXH.206 = LIFT.403/.415 = LS115DEG
H.O. ZZ4 : INT.208/EXH.221 = LIFT.474/.510 = LS112DEG
LT1/4 HOT : INT.218/EXH.228 = LIFT.525/.525 = LS112DEG
Basiclly a stock type rebuild on the lower end, arp rod bolts, main studs, hyperuetic (?) pistons, ect. A good DD set but with pwr output more inline with some of the newer eng. I'd like to see something around 300hp. As it stands ZZ4 looks pretty good and the price is right.
Anyone have any more thoughts. The car is a 91 Formula 350TPI (map), 700r4/ 2400 stall shift kit, C5 brakes up Frt, 02camero disc br. posi w/3.23, whls 17x9 275/40-17 at all 4.
My brain says ZZ4 my gut wants LT-4HOT.
I drive 50mi mostly hiway daily.
Last edited by firehawkslplus; Feb 12, 2006 at 01:42 AM.
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