Is it worth doing a ls6 intake w stock exhaust manifolds & cats?
#1
Is it worth doing a ls6 intake w stock exhaust manifolds & cats?
I was starting to think about a ls6 intake but I am going to keep my stock exhaust manifods & cats. Emissions in NY are a pita (what a suprise) & I dont want the hassle every year. If I by a legal type (I think) high flow cats & headers it will be a fortune. I do have a cat back for the rear half. With the stock part of the exhaust choking the car will the intake be worth it?
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An internally stock LS1 with stock manifolds and cats won't see any big gains from an LS6 intake swap alone; you probably won't actually feel much of anything at all. With the intake + tune though, there will be more of a difference.
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#9
Did mine this year. Only performance mod was a lid. Noticed a difference right away. Most of it is throttle response though.
Was worth it for me.
Fwiw I think it was high performance Pontiac that did an article on this swap and gained like 18hp at the wheels on a stock car with stock tune
Was worth it for me.
Fwiw I think it was high performance Pontiac that did an article on this swap and gained like 18hp at the wheels on a stock car with stock tune
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Once you combine the LS6 intake with other bolt-ons (such as headers, TB, etc.), and especially with internal engine modifications, you will see noticeably more improvement from it.
18rwhp on a 100% stock LS1 and stock tune? That is a fantasy.
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intake
dead on about the stock exhaust i have friend that has the same car as i do 1999 camaro only difference is long tube header and after market on back. our best times his 13.09 mine 13.12 on the same night. only mods for both are 2200 stall and slp air lid.
#13
hppp_0607_1999_pontiac_trans_am/viewall.html
This isn't the article I was thinking of (will search my stack of mags later) but this article shows gains albeit to a lesser extent that I i said I remember. The article I read was where they took a stock car, did the modification and saw iirc 18whp. Now I would not say that's the norm(obviously). However I most definitely felt a difference in my lid only car.
EDIT
sorry the crack must of been extra potent this morning because I combined two articles haha. The higher hp numbers came from the article I read where hpp took a stock ws6 and tuned it.
http://www.highperformancepontiac.com/tech/hppp_1209_2001_pontiac_trans_am_performance_upgrad e/viewall.html
Last edited by black79transam; 07-29-2013 at 11:42 AM.
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http://www.highperformancepontiac.com/tech/
hppp_0607_1999_pontiac_trans_am/viewall.html
This isn't the article I was thinking of (will search my stack of mags later) but this article shows gains albeit to a lesser extent that I i said I remember. The article I read was where they took a stock car, did the modification and saw iirc 18whp. Now I would not say that's the norm(obviously). However I most definitely felt a difference in my lid only car.
hppp_0607_1999_pontiac_trans_am/viewall.html
This isn't the article I was thinking of (will search my stack of mags later) but this article shows gains albeit to a lesser extent that I i said I remember. The article I read was where they took a stock car, did the modification and saw iirc 18whp. Now I would not say that's the norm(obviously). However I most definitely felt a difference in my lid only car.
Either way, one should not expect a big difference from this modification alone on an otherwise stock car. It's just one part in a series of bolt-ons that together can definitely make a big difference. The OP had mentioned getting a tune + intake together; this will deliver a bigger overall gain that should be a little more noticeable.
This comparasion doesn't work. Too many possibile varibles between two different cars and two different drivers. Put those LTs and catback your car, tune it for the new exhaust and, assuming your car is running correctly and has proper traction, you'll see a much better gain than just 0.03 seconds.
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Your EGR will go away with an LS6 intake. I don't know if you have visual inspection like CA, but if so, you will fail.
I don't remember if I did the swap before or after LT's, but I gained better throttle response, more torque in the mid-range, and IIRC, .05 at the track,.
I don't remember if I did the swap before or after LT's, but I gained better throttle response, more torque in the mid-range, and IIRC, .05 at the track,.