First LT-1 mods
Thread Starter
Racer
Joined: May 2012
Posts: 363
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From: Peabody MA
First LT-1 mods
Looking for some suggestions, no FI/nitrous at this point. It's a 92, completely stock right now (6-speed). I live in mass so I don't need to pass emissions (no cats needed). The car is my DD so nothing that would make it too difficult to drive daily. I was thinking headers as a start or maybe roller rockers? I don't know much about working on cars, please help!
Last edited by vinniemc; Jun 21, 2012 at 02:01 PM.
Drifting
Joined: Oct 2004
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From: Hawaii
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
for bolt ons those are the 2 best ones to start with. The factory exhaust is pretty good. Add a set of long tube headers and tie back into the stock exhaust. The rockers will help some as well, if you go with 1.6 full rollers. IMO a bigger throttle body is a waste at this point. There is some small gain from a chip from someone such as pcmforless and a 160 tstat.
You didnt mention if it is a 6sp or auto. Assuming its a auto, consider gears between 3.45 and 3.73 and a stall converter 2500-3000.
After all of that, its time to do a heads and cam upgrade.
You didnt mention if it is a 6sp or auto. Assuming its a auto, consider gears between 3.45 and 3.73 and a stall converter 2500-3000.
After all of that, its time to do a heads and cam upgrade.
Le Mans Master
Joined: Jul 2005
Posts: 5,193
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rear ...gears...find out what you have and get better ones..ergo..2.59 to 3.07 or 3.45...best bang for the buck..I'm waiting for a call from the shop about what will fit in my 2 series carrier for sure..hope its the 3.45, have to get special gears for this but the whole thing with all new bearings will come to under a grand...tough to beat that..do a search..tons of opinions and actual mod performance gains to be found..headers will do nothing for a stock motor..
Thread Starter
Racer
Joined: May 2012
Posts: 363
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From: Peabody MA
I have the 6-spd, I'm not sure what I have for rear gears though, is it 3.45? I know the LT-1 flows pretty well stock but wouldn't longtubes and removing the cats add some power?
Also, what about intake mods?
Also, what about intake mods?
Instructor
Joined: Mar 2010
Posts: 163
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From: Birmingham Alabama
More air in and more air out will give more power. No amount of power is any use if you can't hook it to the road though. Make sure your suspension, tires, etc are all up to handling the power you seek.
Sara Lou
Sara Lou
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Long tube headers will help and as I said earlier the rest of the exhaust is pretty good. Of course when you put long tubes on, its going to eliminate the cats. The intake is very good. Nobody has really came out with anything better especially considering the price some of them charge for em.
Thread Starter
Racer
Joined: May 2012
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From: Peabody MA
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Safety Car
Joined: Sep 2010
Posts: 3,752
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From: Indiana PA
Don't bother with changing your intake to a cut lid or other system at least with stock displacement/cam. I actually went faster at the track with the stock air box over a cut lid with K&N.
For the naysayers, the DA was actually better on the day I ran the K&N. I went faster on stock airbox on a worse DA day. Go Figure. This was on back to back weekends.
For the naysayers, the DA was actually better on the day I ran the K&N. I went faster on stock airbox on a worse DA day. Go Figure. This was on back to back weekends.
Drifting
Joined: Aug 2009
Posts: 1,972
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Gears will be one of the biggest acceleration seat-of-pants improvements. Not cheap though and I wouldn't start there but it'd be near the top of the list. I went with 4.11s. They're beastly but they also make me wish I had more top end room to rev since I run through the gears so quickly now. That's curable, just not on my current budget! Gears do impact your fuel economy so keep that in mind since your daily driving it.
Do the beginner stuff first:
1) get maintainence up to speed, wires, plugs, fluids, anything else needing attention
2) cut the lid on the intake - easily done with an airbody saw & free
3) k&n drop in if you have cash to burn or a new paper replacement
4) Install a set of of roller rockers
5) maybe now start thinking about headers or gears
Do the beginner stuff first:
1) get maintainence up to speed, wires, plugs, fluids, anything else needing attention
2) cut the lid on the intake - easily done with an airbody saw & free
3) k&n drop in if you have cash to burn or a new paper replacement
4) Install a set of of roller rockers
5) maybe now start thinking about headers or gears