cam?
03-21-2005, 12:22 AM
#1
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Car: 1992 firdbird formula
Engine: 5.7 tpi
Transmission: 700r4
cam?
i have a 1992 formula that will have a super ram that is ported and matched to the heads. The heads will be milled as well. I will be using light weight corvette pistons. the car also has headers, underdrive pulleys,afpr, no air or smog and will get a custom prom. I also have 3.73's and will be getting a 2800 stall and maybe nitrous. Will this cam work well with this combo? what about the 110 lobe seperation? Is there anything else i'm forgetting?
cam here
cam here
03-26-2005, 02:46 PM
#3
That's basically a slightly longer duration LT4 "Hot" cam grind, and should work well with a short runner intake, higher gear ratio, and high slip converter. The problem with that cam is that it appears to be a single pattern grind, which might not be quite as appropriate for the EFI in a mostly street application. I am presuming by the specs that it is a single pattern, but could be mistaken.
I am a bit curious about the "lightweight Corvette pistons", however. I thought that an L98 piston was the same in either variant. What is the piston mass, anyway? You may (should) have to rebalance the crank if you reduce piston mass.
I am a bit curious about the "lightweight Corvette pistons", however. I thought that an L98 piston was the same in either variant. What is the piston mass, anyway? You may (should) have to rebalance the crank if you reduce piston mass.
03-26-2005, 04:18 PM
#4
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Car: Death Mobile
Engine: 666 c.i.
Mr. Vader is correct to point out that you have selected a single pattern cam. Whether or not a single pattern cam is the right cam depends on your heads (primarily) followed by your intake and exhaust.
You don't mention you heads but the stock iron heads are a bit weak on the exhaust side (while the aluminum L98 heads are quite strong on the exhaust). Though seldom discussed, I personally think the TPI and Superram setups would benefit from more intake duration compared to a Holley Stealth Ram or TPIS Miniram. Lastly, you will need to look at your exhaust. Most of the exhaust systems for F-body cars are a bit restrictive and use a bit more duration on the exhaust side.
Bottom line, the intake can handle a single pattern and the exhaust would prefer a dual pattern - so the deciding factor will be your heads. And, most SBC heads (excluding AFRs and aluminum L98s) prefer a bit more duration on the exhaust.
Lastly, if you do add NOx, you will definitely need more exhaust.
You may find Comp Cams Hydraulic Roller 224/230 @ .050 with a 110* LSA a bit better choice.
You don't mention you heads but the stock iron heads are a bit weak on the exhaust side (while the aluminum L98 heads are quite strong on the exhaust). Though seldom discussed, I personally think the TPI and Superram setups would benefit from more intake duration compared to a Holley Stealth Ram or TPIS Miniram. Lastly, you will need to look at your exhaust. Most of the exhaust systems for F-body cars are a bit restrictive and use a bit more duration on the exhaust side.
Bottom line, the intake can handle a single pattern and the exhaust would prefer a dual pattern - so the deciding factor will be your heads. And, most SBC heads (excluding AFRs and aluminum L98s) prefer a bit more duration on the exhaust.
Lastly, if you do add NOx, you will definitely need more exhaust.
You may find Comp Cams Hydraulic Roller 224/230 @ .050 with a 110* LSA a bit better choice.
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