Gen 3 is the best platform for swaps IMO.How late of an LS engine? Quite a few LS3 engines around here, much less the Gen 4 and Gen 5 stuff. I think the AFM / DOD technology unsettles people and the difficulty of tuning the Gen 5 PCM devices gets harder all the time.
I'm a Gen 3 swap guy running an engine and trans out of a 1999 GMC Sierra truck - a very early LS engine of no interest to you.
This is the way to do it.Screw all that. Just get a holley terminator x. Complete new plug and play engine harness with new ecu and fuel pump relay for $1k. Then you can tune it yourself for modifications. Or just leave the learning on and it will tune it’s self. Plus you’d be getting all the extra features that come with the holley vs stock ecu.
Well, I was an off-road fanatic. I built a sandrail from the ground up completely. I powered it with a 2.2 ecotec with a blower on it. I ran a mefi 4 B computer that I could have flashed for any gm engine unfortunately I sold it. I was just curious what folks were running. Any fitment issues, what harnesses folks are using, etc. Looking for a cheap way to make a turn key package. I inherited a 65 Elko that has been in the family from factory. It is bone stock with a 283, th350, and 10 bolt rear end with extremely high gear ratio. Probably a 3.08. haven't confirmed it yet though. Should have counted the teeth when I had the diff cover off. It's a gutless car. I want some power but still a daily driver type car. I just don't want to spend a fortune for motor, tranny, rear end etc. While thinking about the HP increase I want my mind wandered to I am going to have to swap out all the OG stuff. The car is almost 100 percent numbers matching with the exception of the tranny. Ditched the Saginaw 3 on the tree because it ground in every gear anyways. I like the idea of fuel injection and computerized shift points etc. That stuff is easy to manage in my opinion.What do you want to know about LS swaps?
Trust me Rick, my mind goes back and forth. It's going to one of my son's eventually. I figure they can paint it etc. I was thinking of swapping out the early model drive train with later model for me and grandpa to drive and keep the Original drivetrain to swap back in for the boys. I'm not afraid of the work of swapping back and forth. I definitely won't get rid of any of the numbers matching items. I was thinking an LS3 from the gen 3 like you said. Just don't know what issues I'll have with fitment of engine and tranny. Don't want to cut the car up to make it fit.If you want LS, a Gen 3 motor from about 1999 up to maybe 2007 or so is the way to go - avoid the Displacement On Demand / Active Fuel Management engines.
On the other hand, you have a near bone stock family heirloom. I wouldn't harm a hair on its steel rooftop head and keep it as is.
I havent done it, but I do know that a lot of people run old transmissions with LS engines.Has anybody here put a th400 behind an LS swap? Holley sells a swap kit for it. How would this work? Does the trans bolt right up to the block? I can't imagine it does. I have a couple of th400 transmissions that would save me some money.
The th-350, 400 and 700r4 are a direct bolt up to an LS. You will however need a flexplate adapter kit. This flexplate kit will differ depending on what year and model LS so make sure you look at the specs and get the right one.Has anybody here put a th400 behind an LS swap? Holley sells a swap kit for it. How would this work? Does the trans bolt right up to the block? I can't imagine it does. I have a couple of th400 transmissions that would save me some money.