new to LS, not new to GM
Thread Starter
Registered User
Joined: Oct 2014
Posts: 0
Likes: 0
From: Central Pennsylvania
new to LS, not new to GM my first car was a 1976 Cutlass supreme wagon, with the olds 455 and a th400.
I loved that car, the room, the endless torque under the right foot, the simple mechanics and the reliability...I liked everything about it except it was low compression, and drank gas...I could have built the motor, but I bought a bike as it was my DD at the time.
after a while I traded it off for a '68 olds Delta 88 4door with a hi-comp 455 that I put a cam, intake and carb on...it was WAY more powerful than the cutlass, but it didn't have the charm, ran on premium fuel+octane booster+lead additive, and even though it was more powerful, was way slower because of the traction issue.
I traded that off for a VW passat with the 1.8 turbo/5 speed, it got the gas mileage I needed to get through that time of my life. I decided the only thing it needed to be the ultimate car was AWD, so one day in my travels I found an A4 quattro with a blown up transmission for chump change, I bought it.
I've thoroughly enjoyed this car, I replaced the stock tranny with a long-ratio trans with a high-ratio center diff, put gauges in it, big-port head, a tune...but now I'm at the point where I have to shell out big money to go faster...and won't go that much faster.
the next step would be a turbo upgrade, I would sacrifice driveability and some gas mileage, and would still be limited at 300hp.
I've decided this car is a DD and nothing more.
I've been reading and reading, trying to learn everything I can about doing an LSx build, and I'm here to get answers and support.
-does anyone have a diagram and pinouts on how to modify the stock harness and use the stock PCM?
-if I buy a T-56 for an LT1 or a C5, how do I modify it to fit an LM7/L33/LQ4?
-what is involved in putting a junkyard holset or ebay turbo on one?
-what is a good cheap light car, that can be DD'd(4 door/wagon), with a big enough bay?
I loved that car, the room, the endless torque under the right foot, the simple mechanics and the reliability...I liked everything about it except it was low compression, and drank gas...I could have built the motor, but I bought a bike as it was my DD at the time.
after a while I traded it off for a '68 olds Delta 88 4door with a hi-comp 455 that I put a cam, intake and carb on...it was WAY more powerful than the cutlass, but it didn't have the charm, ran on premium fuel+octane booster+lead additive, and even though it was more powerful, was way slower because of the traction issue.
I traded that off for a VW passat with the 1.8 turbo/5 speed, it got the gas mileage I needed to get through that time of my life. I decided the only thing it needed to be the ultimate car was AWD, so one day in my travels I found an A4 quattro with a blown up transmission for chump change, I bought it.
I've thoroughly enjoyed this car, I replaced the stock tranny with a long-ratio trans with a high-ratio center diff, put gauges in it, big-port head, a tune...but now I'm at the point where I have to shell out big money to go faster...and won't go that much faster.
the next step would be a turbo upgrade, I would sacrifice driveability and some gas mileage, and would still be limited at 300hp.
I've decided this car is a DD and nothing more.
I've been reading and reading, trying to learn everything I can about doing an LSx build, and I'm here to get answers and support.
-does anyone have a diagram and pinouts on how to modify the stock harness and use the stock PCM?
-if I buy a T-56 for an LT1 or a C5, how do I modify it to fit an LM7/L33/LQ4?
-what is involved in putting a junkyard holset or ebay turbo on one?
-what is a good cheap light car, that can be DD'd(4 door/wagon), with a big enough bay?
TECH Enthusiast
Joined: Sep 2014
Posts: 732
Likes: 1
From: alburnett, iowa
lt1 swap.com has alot of info on the wiring aspect. try to get motor tranny set up with all accesories on them. computor and wiring as well. 03 and newer is drive by wire throttle so get gas pedal/tach box wiring harness with it. im currently doing conversion on a 76 buick skylark. recomend alot of reading/ questions. this site works well for info as well. look at conversion section read stuff people are doing.
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