Alright. I know this question has come up quite a few times, but I cant find all the answers, so Ill post my questions. im getting a wrecked 01 ss m6, and want to do all bolt ons, have good gas mileage, and be really reliable. I dont want cam, or heads, and want to keep the stock 10 bolt, maybe a gear swap. Questions are, What are all, or most of the poular bolt ons for the ls1? Mainly ones that wont sacrifice the above mentioned? Also, if I still want decent mpg, should I go 4.10, 3.73, or stock 3.42? W/ most, all bolt ons, what is an estimated 1/4 mile time? Im hoping for low 12s. Can I get that on street tires? Thanks for your patience, and sorry about all the questions.

 

low 12s on bolt ons is gonna be tough unless you are a hell of a driver.

it may be possible with a killer suspension and really sticky tires...but not street tires.

seems strange that your very simple questions were not answered by reading. but here goes again....

lid, headers, catback, dyno or mail order tune

subframe connectors, lca, poly torque arm bushing or new torque arm.

3.73 gears will be a nice compromise with the m6....should only raise your cruising rpm by about 200rpm, however it will make it that much harder to launch well.

next things to consider would be electric water pump, higher ratio rocker arms
and some of the "every little bit helps" mods like underdrive pullies and ported TB


i'm curious why you say you don't want a cam? is it that you don't feel like tearing apart the engine? cause a mild cam will give good power numbers and will still maintain full reliability and driveability with a good tune. you can even go with a small cam, and a real budget set of heads and make some killer power with near total stock manners.

just wondering

 

"ditto"

 

I dont know about elec. wp. It only lasted about a year on my lt1. If a cam swap on the ls1 is as hard as on the lt1, then no way I want to do it. I guess it wouldnt be cause of the extra components on the front of the lt1. Does a throttle body, and pulleys help on an ls1? Im just saying this, b/c most think they does nothing on lt1. Who makes a good lid, and would I need one w/ an ss? This so far is my planned setup. Lid, LTs, GMMG, ls6 intake, 3.73s, 160 thermostat, rockers, springs, computer tune, and possibly tb if would help compliment ls6 intake. And if pulleys give decent gains, those too.

 

like teke mentioned already, + a small shot of n20

 

If your LS1 was built after June of 2001, there's a good chance you have the LS6 intake manifold. Mine did. Some vette shops have take offs of LS6 (Z06) heads and cam. Add a 90mm throddle body and some tuning and you should get at least 30 extra horses.

 

Well You can be reablie with a cam. And then get your low 12's.

Lid
Long tubes
True Duals
Ls6
(get you a cam .588 or so)


If your going to get low 12's you really need some slicks, but if you do that you really need a 12 bolt. I woudln't risk it on a 10 bolt.

Keep the 3:42's I have a big cam and about 410rwhp and get 30mpg on long trips and all of that

 

something was wrong with the WP if it died in one year. they should be good for 3000+ hours.

as for the lid, ....a lid is a lid is a lid. go buy the design and price you like best, no ONE lid is better than another. and yes you'll still need on on an SS

as for the intake...an 01 fbody will already have the ls6 intake (or should). and you won't gain much from a bigger throttle body..but porting the stocker could pick up a few ponies and get better throttle response for a cheap cost.

a pulley is a small gain...nothing crazy. but like i said...its one of those "every little bit helps" mods. since the stock LS1 water pump is pulley driven (unlike the LT1) it theoretically should yeild more gains.

the cam swap on the LS1 isn't horrible. many guys have done them in their garages. if you can do the work to swap out springs and rockers...than a cam is not much harder. and a cam will give more gains than a set of rockers. and anticipating the question, you need to swap springs with rocker as well as with a cam, stockers won't handle much more than a stock cam.

for the $$ you spend on all those small mods...you could afford a set of budget heads. and while it's apart...throw in a small cam.

i mean $500 for the water pump, $200 for the pulley, $150 for the ported TB or $400 for an aftermarket.....one of the vendors (TSP i think) offers budget ported LS6 heads for $1000

something to consider

 

how can you tell by looking at it if its an ls6 intake?

 

I was under the impression that all '01+ LS1 cars got it.

 

yep

 

has it got a black tube connecting to the top of the "neck" just behind the TB??

if not...its the LS6