: engine swap



sweetdick2
04-13-06, 07:30 PM
I have a 85 Fleetwood Br. coupe with 4100 motor,I'm going to swap a LT1 motor and elec trans. I got the wireing kit from painless,I know motor mounts are available from caddy.what other parts do I need from caddy?

N0DIH
04-14-06, 06:54 PM
Get the motor mounts from a 94-96 LT1 car (B or D body), Cadillac ones are likely silicone fluid filled, so they will be the smoother ones. You don't have to get them Cad, but they would be the best ones for smoothness.

Should be a fairly straightforward swap. Not sure which exhaust manifolds to use, but likley use any 77-90 SB Chevy manifolds for the B/D body. Not sure if the 91-96's will work. They should, but they did shift things around in the redesign.

Get the LT1 Radiator too, and surge tank. That is all an intergal system. Did you get a F/Y car LT1 or an B/D car LT1? There is some minor differences that are worth noting.

You might want to do some lurking at http://impalassforum.com/cgi-bin/ultimatebb.cgi too.

Destroyer
04-16-06, 10:38 PM
Not sure which exhaust manifolds to use, but likley use any 77-90 SB Chevy manifolds for the B/D body.82-92 Fbody V8 exhaust manifolds will work too. They are the exact same manifolds as the 77-90 b/d body cars and the 91-92 FWB. I dropped my 87 5.7 Iroc motor into my '91 FWB using the Iroc stock manifolds.

BCs71
04-17-06, 10:36 AM
http://lt1tech.com/cgi-bin/ultimatebb.cgi?ubb=forum;f=20

Hybrid section for adapting LT1s into other cars.