Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

FOUND LT4 with hotcam

Thread Tools
 
Search this Thread
 
Old Sep 10, 2007 | 02:50 AM
  #1  
formula1988's Avatar
Thread Starter
Member
 
Joined: Jan 2005
Posts: 116
Likes: 0
From: Indiana
Car: 1988 forumla 350
Engine: l98 350 tpi
Transmission: 700r4 2100 stall
FOUND LT4 with hotcam

My friends dad wrecked a lt4 vette. Its 2 states away. I want to put it in my firebird. Do i Need to bring the block home or is it the same as a 350 tpi.
Reply
Old Sep 10, 2007 | 02:57 AM
  #2  
duckmanquacker's Avatar
Senior Member
 
Joined: Sep 2007
Posts: 568
Likes: 1
From: Leander,TX
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: FOUND LT4 with hotcam

the LT4 is a different manifold then your TPI, different coolant routing, and distributor is mounted off timing cover. yes that would be a great swap for your bird. do some searches for the swaps that others have done here for your specific needs.
Reply
Old Sep 10, 2007 | 12:10 PM
  #3  
five7kid's Avatar
Moderator
25 Year Member
iTrader: (14)
 
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You should get the entire engine, ECM, harnessing, and all accessories. The blocks are different - mounting an LT4 induction on a TPI engine, although it can be done, is just silliness (IMHO).

You will need to change the oil pan and oil pump to f-body style. The engine mounts from the TPI engine can be used on the LT4.
Reply
Old Sep 12, 2007 | 03:00 AM
  #4  
formula1988's Avatar
Thread Starter
Member
 
Joined: Jan 2005
Posts: 116
Likes: 0
From: Indiana
Car: 1988 forumla 350
Engine: l98 350 tpi
Transmission: 700r4 2100 stall
Re: FOUND LT4 with hotcam

OK, thanks that helps. I Hope i can get the motor out in one day. Ill get a few friends to help.illl have to come back another time to pick it up in a truck. I dont think it will fit in my taurus.

The car has been sitting for 5 years. He had some stuff done to it but im not sure what. Il find out! Ill post some pics when im done. I put a ram air hood and a pearl paint job on it. I just need it to be a liittle fast than a 14.3. Mybe in the 12s with the lt4.
Reply
Old Sep 12, 2007 | 03:17 AM
  #5  
randomguy121's Avatar
Junior Member
 
Joined: Sep 2007
Posts: 22
Likes: 0
From: cookeville tn
Car: 2001 tarus/ and 84 TA
Engine: 408 sb
Transmission: 2 speed powereglide
Axle/Gears: stock:(
Re: FOUND LT4 with hotcam

if its been sitting for a few years it might be a good idea to prime the engine. and while you have it out its a prime time for header instalation..... you might want that extra flow with that cam.
Reply
Old Sep 15, 2007 | 05:26 PM
  #6  
Air_Adam's Avatar
TGO Supporter
 
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: FOUND LT4 with hotcam

Originally Posted by five7kid
You should get the entire engine, ECM, harnessing, and all accessories. The blocks are different - mounting an LT4 induction on a TPI engine, although it can be done, is just silliness (IMHO).

You will need to change the oil pan and oil pump to f-body style. The engine mounts from the TPI engine can be used on the LT4.
Actually, I don't think you can put an LT4 manifold on a TPI engine... LT1 you can, LT4 cannot. The LT4 engines has raised intake ports, similar to what Vortec heads have. Thats why you have to use LT4 intake and heads together - can't mix and match.

But either way, Five7 is right... you want to get the ECM, wiring harness, accessories etc. as well as the engine itself. And you'll need the whole engine. Its a totally different block casting from the TPI engine. TPIs are just tradiational SBC, but the LT1 and LT4 are not - they only (sorta) look like it.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RyanJB
Members Firebirds
39
Nov 20, 2018 03:30 PM
tommy z-28
Cooling
5
Oct 6, 2015 10:58 PM
WickedBowtie
Members Camaros
10
Sep 17, 2015 09:13 AM
WickedBowtie
Interior
4
Sep 11, 2015 11:24 PM
rudolphschenker
Transmissions and Drivetrain
1
Sep 4, 2015 02:41 AM




All times are GMT -5. The time now is 02:10 PM.