top end questions with large cui
#1
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im looking to get a 402, now i need to piece together the topend. this car is primarly going to be used on the street- for now
my questions- what is a good cam for a stroker motor? sdpc suggested a 236/236 cam. i want something big, that will make big power, but obviously i can drive on the street. i was thinking along the lines of a 238/242 or larger. any draw backs to a cam that size or bigger? people are putting 236 durration cams in their their stock cui motors without a problem. i want the most hp i can achieve...or is the extra power going to 10 more degrees not worth the sacrifice in drivability and higher powerband?
heads- so many choices. sdpc is pushing afr 205s. now i dont want to sound cheap, but how much power do they make over say a stock ls6 head, or reworked ls6 head? are the chambers going to be too small for a 402 on those heads? i can get a patriot ls6 worked head for 500 less....which would be nice to use on tuning or something
. or is it worth it to go to the afrs. on the flipside, what about the afr 225s vs the 205. is the extra 500 worth it on those? i have a hard time justifying the extra 500-1000 bucks if all im going to see is 5-10 more hp compared to a cheaper head.
now time for a silly question- how much hp would i lose if i had stock 01-02 exhaust manifolds on the car vs long tube headers. i estimate about 30 rwhp.
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my questions- what is a good cam for a stroker motor? sdpc suggested a 236/236 cam. i want something big, that will make big power, but obviously i can drive on the street. i was thinking along the lines of a 238/242 or larger. any draw backs to a cam that size or bigger? people are putting 236 durration cams in their their stock cui motors without a problem. i want the most hp i can achieve...or is the extra power going to 10 more degrees not worth the sacrifice in drivability and higher powerband?
heads- so many choices. sdpc is pushing afr 205s. now i dont want to sound cheap, but how much power do they make over say a stock ls6 head, or reworked ls6 head? are the chambers going to be too small for a 402 on those heads? i can get a patriot ls6 worked head for 500 less....which would be nice to use on tuning or something
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
now time for a silly question- how much hp would i lose if i had stock 01-02 exhaust manifolds on the car vs long tube headers. i estimate about 30 rwhp.
#3
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DONT skimp on the heads........ btw: a patriot ls6 "STYLE" head is not the exact same thing as an LS6 head
"LS6" cores ALONE are on the other side of 1k ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
If it were me.....I'd call TEA
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If it were me.....I'd call TEA
#5
TECH Senior Member
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Whatever you do, do not keep stock Exh. manifolds. Major bottle neck.
Heads: either LS6 stage 3 or AFR 225 milled (pistons with valve reliefs for being able to run bigger cams)
Cam: nothing smaller that a 240+ duration (custom for your heads)
Heads: either LS6 stage 3 or AFR 225 milled (pistons with valve reliefs for being able to run bigger cams)
Cam: nothing smaller that a 240+ duration (custom for your heads)