I am two months away from getting a built LT1 (Vette) motor for my 3rd gen. Formula. I've seen general info. regarding this swap on the net, but I would like to get my hands on a definitive guide to this swap if one is available. The motor will sit until my chassis is set up to handle the power. Any info. would be greatly appreciated. Thanks.

 

check out thirdgen.org in the motor swap section, there is a ton of info on there. Also check out http://www.geocities.com/texaslt1/lt1swap/swap.html
Hope this helps.

 

thirdgen.org is the best its reall easy to do if you have a good general knowlege of cars thr hardest part will be the wireing there is only 8 wires that you should need to spice maybe a few more depending on what you are keeping on the engine

definatly a good mod mine kicked my butt because i put a 4th gen dash in at the same time which ment alot more wires

 

89WS6...what's up man? I'm currently doing a LT1 install for my '90 Thirdgen as well...My install is a little bit more involved, b/c it deals w/ a V6 mpfi, to a V8...what info are you looking for to be exact?

It's not really that complicated, from what I gathered. Like Lunati397 said, the most complicated part will be the wiring. However, if you break it down into parts, that should be tackled fairly easily. All of your connections will be from the C207, and C100 bulhead connectors on the thirdgen (Passenger side kickpanel, and drivers side under hood, by fuel pump relay on the firewall)

 

V6 to LT1 isn't much different from v8 to lt1. I also did the V6 3.1 to 5.7 LT1 in my 91.

 

As long as it's a MPFI V6, it's roughly the same. Engine Mount change, Tach change...umn...that's basically it...A little bit diff. wiring schematics, but that's about it.

 

Hey guys,
Thanks for the info. I got lucky with this motor. My father's partner is a car nut. He had this motor built for a roadster (kit) that went on an S-10 chassis. He didn't have room for headers, but the motor dynoed at over 400 hp to the wheels with exhaust manifolds. The motor comes with two ECMs and two different cams. Once the chassis mods are done, I'll swap the motor myself, but as far as the wiring goes, I'm planning on towing it to my favorite garage. If anyone needs a TBI 305, let me know. LOL. Thanks again for the input.
David

 

I am currently doing this swap, and I see this thread is ANCIENT, but if any of you guys still get notifications from it any advice would be appreciated. I'm swapping the 3.1 mpfi to the 5.7L LT1 but Carbed ..... My LT1 is off of a 95 4th gen. First motor swap ever.... All advice welcomed...