cam help
10-13-2012, 08:28 PM
#1
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Car: Chevy
Engine: 5.0
Transmission: 700r4
cam help
I have a 91 caprice classic with the lo3 5.0 305 with headers and a friend has a zz4 cam he will sell me for $40.
I would like to know will the zz4 cam work with my computer.
I would also like to know if i would need to do anything to my tbi or heads.
I would like to know will the zz4 cam work with my computer.
I would also like to know if i would need to do anything to my tbi or heads.
10-14-2012, 09:51 AM
#2
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Re: cam help
The heads won't take anywhere near that much lift- especially on the exhaust side which is .510" with stock 1.5 rockers.
A custom tune would almost be a necessity as well (TBI systems are very sensitive to "hot rod" kind of changes- like bigger cams).
Might want to look at the production LT1 cam instead- it's a popular upgrade for TBI engines. It'll still need a tune, but at least the lift is within the capabilities of stock TBI heads.
A custom tune would almost be a necessity as well (TBI systems are very sensitive to "hot rod" kind of changes- like bigger cams).
Might want to look at the production LT1 cam instead- it's a popular upgrade for TBI engines. It'll still need a tune, but at least the lift is within the capabilities of stock TBI heads.
10-14-2012, 12:05 PM
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Re: cam help
I was looking at the lt1 vs zz4 camshaft and the zz4 is smaller thin the lt1
LT1
DURATION 211 220
LIFT (1.5)492 .492
LIFT (1.6)525 .525
Lobe 113
ZZ4
Duration 208/221
Lift .474 .510"
Lobe 117
LT1
DURATION 211 220
LIFT (1.5)492 .492
LIFT (1.6)525 .525
Lobe 113
ZZ4
Duration 208/221
Lift .474 .510"
Lobe 117
10-15-2012, 10:05 PM
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Car: 1983 G20 Chevy
Engine: 305 TPI
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Axle/Gears: 14 bolt with 3.07 gears
Re: cam help
That is the LT4 HOTCAM, not the production LT1 cam. The production LT4 cam has even less lift than the LT1 cam since it came with 1.6:1 rockers stock. With 1.5:1 rockers the Hotcam even has less lift on the exhaust side than the ZZ4.
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