Raising Tq curve - Cam choice?
11-04-2004, 07:54 AM
#1
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Thread Starter
Raising Tq curve - Cam choice? I've been reading some of the cam threads and am looking to raise the peak torque to higher up the rpm range on a stock ls1 with ls6 intake. Thus far the cams I've used have increased the torque everywhere but not really moved it higher. The car is using stock redline and is lightweight so makes to much smoke on initial launch. I'll get some more bhp as well. Have you guys any suggestions? Also, who makes these cams, MS3, G5X3,Trex. I need some specs for them. Thanks.
11-04-2004, 08:34 AM
#2
!LS1 11 Second Club
MS3 (Texas Speed & Performance)
G5X3 (LG Motorosports)
TRex (Thunder Racing)
All 3 of those cams will move the tq peak up high.
I have a TSP 231/237 cam and it peaks at 5000 rpm.
Your engine's rev limiter must be raised to about 6900 rpms.
G5X3 (LG Motorosports)
TRex (Thunder Racing)
All 3 of those cams will move the tq peak up high.
I have a TSP 231/237 cam and it peaks at 5000 rpm.
Your engine's rev limiter must be raised to about 6900 rpms.
11-04-2004, 09:21 AM
#3
Mike,
In simple terms, increasing duration will do what you want. As a side note though, the hyd roller is not designed for "high" rpm operation. OEM's brought it out to make low end power. The mass of the lifter itself and the physics of the hyd. valving limit this. You may want to fool with tranny gearing to improve 60fts and use the power you are making now.
Chris
In simple terms, increasing duration will do what you want. As a side note though, the hyd roller is not designed for "high" rpm operation. OEM's brought it out to make low end power. The mass of the lifter itself and the physics of the hyd. valving limit this. You may want to fool with tranny gearing to improve 60fts and use the power you are making now.
Chris
11-04-2004, 11:34 AM
#5
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Thanks for the info. I can run grinds through the pc but that's a bit 'hit & miss'. There's nothing better then getting advice first hand and seeing what you guys like. I want to stick with the stock valvetrain and rpm's on this engine. What sort of engine power/torque are those cams making in a fairly stock ls1?
11-04-2004, 11:55 AM
#7
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Originally Posted by DietCoke
You will not be able to use stock valvetrain. You must upgrade valvesprings.
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11-04-2004, 12:55 PM
#8
!LS1 11 Second Club
Using Comp 918's the TSP 231/237 is about as big as you can go.
I hope you're not boosting with these large split, low lsa cams. These are definately not forced induction cams.
As for having too much tq down low, that's what proper tire, gear and suspension setup is for.
I hope you're not boosting with these large split, low lsa cams. These are definately not forced induction cams.
As for having too much tq down low, that's what proper tire, gear and suspension setup is for.
Last edited by SouthFL.02.SS; 11-04-2004 at 01:06 PM.
11-04-2004, 03:13 PM
#9
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Thread Starter
Originally Posted by SouthFL.02.SS
Using Comp 918's the TSP 231/237 is about as big as you can go.
I hope you're not boosting with these large split, low lsa cams. These are definately not forced induction cams.
As for having too much tq down low, that's what proper tire, gear and suspension setup is for.
I hope you're not boosting with these large split, low lsa cams. These are definately not forced induction cams.
As for having too much tq down low, that's what proper tire, gear and suspension setup is for.
I know exactly what you mean. These guys don't want to rebuild the car, just shift the tq a bit further up
It's n/a. Cheers dude
11-05-2004, 10:52 AM
#10
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Thread Starter
Has anybody used the GM performance camshaft that was tested in Hot Rod magazine with a carbed inlet assembly? I think they claimed a very high power figure for it, over 500 hp which I thought was a bit unrealistic.