Motor Swap 78 gs400

[jola]

I think so...I'm just making sure before I throw some $$ at one. I'm looking at all my options.

That's the smart way. If you want I can snap some close up pictures of my motor and mounts tomorrow (1980 450E).

[spots25]

i'm telling ya, unless you can get the 4xx heads on that 500 motor, it won't fit

[khardrunner14]

Alright it seems as though 400, 425, and 450 are the way to go. Thanks!

[Nessism]

My understanding is that the 425 is a bored out 400 but the 450 is different; uses a plain bearing crank for one thing. Just a word of warning since I don't think it will be a direct bolt-in.

[spots25]

i've never looked at one, but I'll bet that 450 motor will fit just fine. If the GS500 motor almost fits except the exhaust, it should go