Engine Swap

Reply Subscribe

Thread Tools

Search this Thread

09-16-2007, 07:35 PM

fbird92

Junior Member

Thread Starter

Join Date: Apr 2006

Posts: 67

Likes: 0

Received 0 Likes on 0 Posts

Car: '92 firebird

Engine: 305 HO

Transmission: 700R4 TCI performance

Axle/Gears: 10 bolt disc brake 3:42 slp auburn

Engine Swap

I am looking to do an engine swap in my '92 firebird. It currently has a 305 tbi. I would like to be able to put out around 350 rwhp or more. I would like to keep it EFI and not carb. But i dont want to make it very complicated by having to burn chips. Tho i was thinking about building a blower motor for the car or maybe swaping in an LT1.

Just looking for thoughts from you guys on what would be the most cost effective way of doing it with out really making this project any more complicated than it needs to be. I would like to be able to just bolt in a motor with little problem and not having to worry about my PCM. I know there is alot of posts out there on similar questions so i will say sorry in advance.

I do have alot of chassis mods and a fully built rear end and a bullit proof tranny so all that i have left is a motor

Reply Like

09-17-2007, 02:02 PM

duckmanquacker

Senior Member

Join Date: Sep 2007

Location: Leander,TX

Posts: 568

Likes: 0

Received 1 Like on 1 Post

Car: 84 Z28 / 88 Trans Am / 87 base

Engine: L69 H.O. / 468 BBC / 2.8 v6

Transmission: 89 700R4 / TH375B / 700R4

Axle/Gears: 3.73 open / 3.23 posi / 3.42 open

Re: Engine Swap

your HP ratings and such are easily atainable with a simple longblock swap. you can swap the injectors to a higher lbs rating without changing your ECM, get a plugnplay chip which goes between the ECM and harness and your all set.

Reply Like

09-17-2007, 02:40 PM

KrisW

Supreme Member

iTrader: (5)

Join Date: Sep 2004

Location: Casselberry, FLA

Posts: 2,771

Likes: 0

Received 5 Likes on 5 Posts

Car: 88 V6 'bird/89TBI bird/85 T/A

Engine: 2.8/TBI/TPI

Transmission: V8 T-5/700R4 x2

Axle/Gears: 3.42 open/2.73 open/ 3.27 9 bolt

Re: Engine Swap

What "plug-n-play" chip is that? Where can I get one?

I'm skeptical because I have been down this road. I think if you get an LSx engine with the matching PCM you might be better off. I have only seen those sandwiched in programmers go in Ford products between the ECM and harness. I seriously would like to know where to get those...

Reply Like

09-17-2007, 05:40 PM

fbird92

Junior Member

Thread Starter

Join Date: Apr 2006

Posts: 67

Likes: 0

Received 0 Likes on 0 Posts

Car: '92 firebird

Engine: 305 HO

Transmission: 700R4 TCI performance

Axle/Gears: 10 bolt disc brake 3:42 slp auburn

Re: Engine Swap

Where can i find one of those plug-n-play chips that would be very helpful and how much would one of those things cost me? so if i got one of thouse, I would be able to run a fully built 350 motor with roller rockers and cam. would putting a TBI from a 454 help?

Reply Like

09-18-2007, 07:24 PM

five7kid

Moderator

iTrader: (14)

Join Date: Mar 2000

Location: Littleton, CO USA

Posts: 43,169

Likes: 0

Received 35 Likes on 34 Posts

Car: 82 Berlinetta/57 Bel Air

Engine: LS1/LQ4

Transmission: 4L60E/4L80E

Axle/Gears: 12B-3.73/9"-3.89

I've seen a guy chase issue after issue when using a "piggy-back" chip, all of which went away when he pulled that thing out and tossed it where it belonged.

Get over your phobia about burning chips. It's the only way to do it right.

The answers to every one of your questions are on the TBI forum.