Will this cam make power with a stock ls1?
Thread Starter
On The Tree
Joined: Oct 2008
Posts: 114
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From: CT
Will this cam make power with a stock ls1? So my friend gave me this new camshaft. It's a comp cam 54-464-11. The specs are .251/.259 duration .624/.624 lift and 115 lobe sep. He was originally going to install it in his 07 z06 but went a different route. Do you think this will make decent power in a 01 ls1? Opinions please and thanks in advance.
That's too too much cam for a stock ls1! If you look at Comps recommendations for the cam they tell you its for larger displacement ls engines with high compression and for race applications.
http://www.compcams.com/Company/CC/c...csid=1408&sb=0
http://www.compcams.com/Company/CC/c...csid=1408&sb=0
Couple of things:
1) It will have 25 degrees of overlap. That can be tuned in a 346, but it will run poorly. The old T-Rex had 25 degrees of overlap. It was a 242/248 110. It could mush up your brakes and you needed like 4.30s and a 4000+ stall just to run that. And that was with the valve events designed for a 346. The 251/259 115 push the valve events way out of the optimal range for a 346. I doubt you'd have much luck driving that below 2500 RPM.
2) The cam is so large, the IVC is so late, you will not make torque. You'd need at least 12.5:1 CR on the motor to build decent torque. And your manifold is not optimized to make peak power at 7000+ RPM. The manifold design peaks around 6300-6400 and the cam has to be attenuated to that to optimize both torque and HP curves. This is optimized for 7500+ in your motor.
3) I doubt it'd actually fit the shortblock without flycutting. Depending on where the ICL of the intake lobe is, you'll be kissing valves with the piston unless you flycut.
1) It will have 25 degrees of overlap. That can be tuned in a 346, but it will run poorly. The old T-Rex had 25 degrees of overlap. It was a 242/248 110. It could mush up your brakes and you needed like 4.30s and a 4000+ stall just to run that. And that was with the valve events designed for a 346. The 251/259 115 push the valve events way out of the optimal range for a 346. I doubt you'd have much luck driving that below 2500 RPM.
2) The cam is so large, the IVC is so late, you will not make torque. You'd need at least 12.5:1 CR on the motor to build decent torque. And your manifold is not optimized to make peak power at 7000+ RPM. The manifold design peaks around 6300-6400 and the cam has to be attenuated to that to optimize both torque and HP curves. This is optimized for 7500+ in your motor.
3) I doubt it'd actually fit the shortblock without flycutting. Depending on where the ICL of the intake lobe is, you'll be kissing valves with the piston unless you flycut.
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Thread Starter
On The Tree
Joined: Oct 2008
Posts: 114
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From: CT
Thanks for the info. I'm going to see since the cam is brand new in the box if comp will let swap it with a cam more suitable for me engines needs. What's a good comp cam for only a loudmouth exhaust and cold air intake upgrades and a ls6 intake on my ls1?
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Staging Lane
Joined: Feb 2014
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From: Seguin Texas
So my friend gave me this new camshaft. It's a comp cam 54-464-11. The specs are .251/.259 duration .624/.624 lift and 115 lobe sep. He was originally going to install it in his 07 z06 but went a different route. Do you think this will make decent power in a 01 ls1? Opinions please and thanks in advance.