What do ya think of this combo?

Topic: What do ya think of this combo? (Read 1584 times) previous topic - next topic

What do ya think of this combo?

June 08, 2005, 12:52:58 AM

My buddy and I are sick and tired of the POS 2.5 CFI 80HP motor that came in his 86 Pontiac Fiero. So Ripped it out and were gonna drop in a 3.1from a 91 Grandprix with the full compter and harness. The car is a 5spd. Any how here are some pics of what we've done. We think this thing should actally move for once. What do you think.

Re: What do ya think of this combo?

Reply #1 – June 08, 2005, 08:55:16 AM

spiffy. Does the transmission match up.

Re: What do ya think of this combo?

Reply #2 – June 08, 2005, 11:04:39 AM

I think if you're gonna go that far, go all the way: http://www.v8archie.com/

Re: What do ya think of this combo?

Reply #3 – June 08, 2005, 11:15:30 AM

Caddy 4.9 is the best swap out there. If I had a fiero thats what I would do.

Re: What do ya think of this combo?

Reply #4 – June 08, 2005, 11:29:44 AM

So a caddy engine vs. this one?

Re: What do ya think of this combo?

Reply #5 – June 08, 2005, 11:32:36 AM

http://www.fieroaddiction.com/caddy49b.html

Try finding a LT1 engine at your local U-Wrench it. Every time I got to the local junkyards there is a 4.9 caddy there. LT1's are so cool ... err not cool. ah (cougarse) runs back to closet--->....

In all honesty though those engines are pretty nice. They run an 11.0-1 compression ratio factory.

Re: What do ya think of this combo?

Reply #6 – June 08, 2005, 06:09:17 PM

3.1 aint a bad little motor and if you can find a 91 or 92 Grand Prix, some had the 3.1 with a supercharger from the factory. If I recall correctly, the blocks and pistons are identical. Heads, intake, computer fuel injectors and of course the supercharger are the differences. This info is from a guy I used to know in Jersey who was a major Grand Prix buff. I'm pretty confident his info was on the mark.

Re: What do ya think of this combo?

Reply #7 – June 08, 2005, 07:00:38 PM

Excellent! the 3.1 will be a nice swap, pretty simple and will really kick up the performance.

Re: What do ya think of this combo?

Reply #8 – June 08, 2005, 07:11:10 PM

Yep we know it will bolt up. We'ed slap a v8 in there but it would munch that tranny. As far as the Grand prix I found some info on a 89-90 3.1 turbo. We also have looked at the super charged setup but think we'll stick with what we got for now.

Re: What do ya think of this combo?

Reply #9 – June 08, 2005, 07:38:50 PM

Quote from: ipsd

We'd slap a v8 in there but it would munch that tranny.

Um, not quite. Upgrade the clutch to a performance piece and it'll be fine. It's the automatics that have a slight problem handling the v8. But a bit of beefing up and those are fine as well.

Re: What do ya think of this combo?

Reply #10 – June 08, 2005, 07:50:35 PM

Quote from: Paul Flockhart

3.1 aint a bad little motor and if you can find a 91 or 92 Grand Prix, some had the 3.1 with a supercharger from the factory. If I recall correctly, the blocks and pistons are identical. Heads, intake, computer fuel injectors and of course the supercharger are the differences. This info is from a guy I used to know in Jersey who was a major Grand Prix buff. I'm pretty confident his info was on the mark.

I agree if you can find a 2.3 ho quad four they are pretty good, My friend and i ran his Grandam gt and the cougar, he stayed with me into third.

Re: What do ya think of this combo?

Reply #11 – June 08, 2005, 08:51:59 PM

My stepson has a 91 tempest with a 3.1 and a 5 speed Muncie/Getrag. Pretty fast car. I can imagine what it'll do in a fiero which I assume to be much lighter.

I found a lot of info about the 3.1 on this page. Some ricey stuff there though.

Re: What do ya think of this combo?

Reply #12 – June 08, 2005, 10:37:29 PM

3.1 didn't come with superchargers if I recall. the 3.8's did.

Re: What do ya think of this combo?

Reply #13 – June 09, 2005, 09:32:20 AM

Like I said....second hand info, but he did know his stuff......

Re: What do ya think of this combo?

Reply #14 – June 09, 2005, 10:15:51 AM

Quote from: CougarSE

3.1 didn't come with superchargers if I recall. the 3.8's did.

Were the first Gen GTP's 3.8's though?

I found a turbo Grand Prix 3.1 from the factory, though. I didn't even know they existed. Now THAT would be fun in a Fiero.