Thread: Will a 305 engine fit into 1999 or newer grand prix?

Not very educated + crappy 305 V8 + swap that hasn't been done = no go.

I mean, unless you've got tons of time and a decent amount of cash for it...and at that point I'd just build a 3800 that is made for it.

if you did this go with a 350
305's are junk

but if you do it better follow this

RWD Grand Prix

unless you find some way to hook up a 305 to a FWD tans IMO not worth it

If you believe in hell, this conversion is the type of work being done there.

Originally Posted by gtpeddie

if you did this go with a 350
305's are junk

There is nothing wrong with 305's they are the same thing as a 350 with just different pistons sizes. But a 305 in a 97+ gp is a no go without extensive work.

3.73" bore begs to differ.

slap a caddy eldorado fwd trans on the small block. theres got to be an adapter plate out there. custom axles to go with that too.

a 305 with a intake cam and headers is nice little engine, headers on a GP with a sbc is all custom work too. unless you steal it from a caddy and work off that set up.

and then you need to mount it all. sounds like more work than its worth unless you have time, money, tools and lots of skills.

I think he knows so little that he doesnt realize that a 305 generally goes into a rwd and hes buying a fwd.

SBC's have been stuffed into Fieros, so I don't see how it is impossible to do here... I can't necessarily say I condone the idea - nor would it be very cost effective, but I do believe it is possible. Sell the 305 and put the money toward modding the 3800, or pick up a Gen3 Firebird and go to town.

305 is junk...its just a boat anchor. possible yes. worth it? HELL no. either sell the gp and 350 and pick up another platform that is RWD or sell the 305 and mod your 3800.
as to fitting into a fiero...fiero's are RWD with a mid engine. that would be a hell of a nice swap. but fwd? nope.

yeah nothing wrong with the 305. its no 350 or 400 , but a solid engine for a dd boat from the 70's.

i had a friend in HS who has a 71 nova, with a 305 in it, cam headers. intake, and where it had no chance in a race with my stock 70 400 firebird, it still had a load more power than it did stock. and it sounded good too.

another guy had a 69 camaro, with a 327 in it, that car sounded like a beast. it was built nice.

burn it.

Ls4?

i considered an LS4 in my regal

But, seriously.

For all the money and wrench time you would need to custom fit a 305 in a GP, you would be able to have a very fast supercharged 3800.

If you were going for a LSx engine to drop in for the "HOLY **** HE DID IT" factor, I could see it being SLIGHTLY worth it, but for a old 305...