Cam and heads in the works
07-07-2010, 01:13 PM
#21
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Sorry guys but the 5.3 truck engine and the 5.3 LS4 are two different engines...the LS4 is based off an LS2.....
The cam will help your car, but the truck engines were very limited by their stock cam's and intake manifolds.....they were designed for torque...not power which is why they always pick up such a dramatic amount of power.
The cam will help your car, but the truck engines were very limited by their stock cam's and intake manifolds.....they were designed for torque...not power which is why they always pick up such a dramatic amount of power.
They ARE different in the fact that they have different engine mounts...............
If the truck's intake and cam were made for torque then how do you explain the LS4's straw sized intake opening behind the TB or how about that anemic cam? Don't forget those amazing exhaust manifolds.
07-07-2010, 07:14 PM
#22
Well as stated some have went big with cams and not seen much gain.. we have restriction in the intake, and exhuast that the trucks dont have. We still have a good compression ratio and good heads. So this "smaller" cam may be the key.
07-08-2010, 11:30 AM
#23
no one has posted dyno results from a cam yet except me....and that as an ls6 cam and it gained me nothing. i will be HOPEFULLY getting my car back tomorrow and i will have it on the dyno in about two weeks so we will see for sure.
also the IRON BLOCK 5.3 truck engine is completely different. ya all push rod engines more or less work the same and will respond to mods similarly but that's like saying a 6.1 hemi is the same as an ls3
also the IRON BLOCK 5.3 truck engine is completely different. ya all push rod engines more or less work the same and will respond to mods similarly but that's like saying a 6.1 hemi is the same as an ls3
07-08-2010, 11:30 AM
#24
no one has posted dyno results from a cam yet except me....and that as an ls6 cam and it gained me nothing. i will be HOPEFULLY getting my car back tomorrow and i will have it on the dyno in about two weeks so we will see for sure.
also the IRON BLOCK 5.3 truck engine is completely different. ya all push rod engines more or less work the same and will respond to mods similarly but that's like saying a 6.1 hemi is the same as an ls3
also the IRON BLOCK 5.3 truck engine is completely different. ya all push rod engines more or less work the same and will respond to mods similarly but that's like saying a 6.1 hemi is the same as an ls3
07-08-2010, 05:18 PM
#25
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Please explain to us what's different FROM A HP MAKING ASPECT????? I'm going to say this one last time THE INTERNAL ARCHUTECHURE IS EXACTLY THE SAME. When you've swapped out pretty much everything except for the block and heads your left with an LS based engine, nothing at all like a hemi, but exactly like the internals of a truck block.
07-08-2010, 05:28 PM
#26
Please explain to us what's different FROM A HP MAKING ASPECT????? I'm going to say this one last time THE INTERNAL ARCHUTECHURE IS EXACTLY THE SAME. When you've swapped out pretty much everything except for the block and heads your left with an LS based engine, nothing at all like a hemi, but exactly like the internals of a truck block.
i feel the same way.
07-10-2010, 07:50 PM
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i have everything ready for a lifters/TR224 with some different gaskets/milling for some compression...but i dont have the ls6 intake so i think the gains are going to be negligible. i want to sell this to get something more performance friendly but if i can't move the car, i guess ill just drive it into the ground.
07-10-2010, 10:28 PM
#34
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This is terrible news. Honestly and realistically, your not going to make more than 360 ish whp with this engine NA.
NACHO, without the intake forget about getting nice gains.
NACHO, without the intake forget about getting nice gains.
07-11-2010, 12:25 AM
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yup thats the main reason why the parts are on the floor in my room not in the car. i cant swing the ls6 intake right now cash wise, not to mention all the little odds and ends that need to be tied up with that mod.
07-11-2010, 01:06 AM
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well i didn't put much thought into what i'm going to do with the heads because the intake is/was my main concern. I was thinking maybe a light port on the combustion chambers, a machine job on the face...and some new gaskets. nothing special really. who knows, its all conjecture though since i probably won't end up doing it.
07-13-2010, 12:05 PM
#39
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well im getting a ls6 intake and ls6 oil pump. still waiting on parts. i will need help with tuning since my tuner wont call me back. i am going to buy hp tuners. i am ready to drop the cradle as soon as i rent a hoist. gotta pay some bills first though and let my knuckles heal up!