LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

Thread Tools
 
Search this Thread
 
Old May 16, 2011 | 02:31 PM
  #1  
82recarro's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2004
Posts: 27
Likes: 0
From: Oslo, Norway
Car: 1984 T/A Recaro
Engine: 350
Transmission: th700r4
Axle/Gears: Have no idea
Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

Hi guys!

I've decided to stop spending all my hard earned cash on the lousy 350 I got in the car, and have bought a LT1 with 4L60E, which I'm using for this season.

The car has been in the shop for almost two months now trying to get the old 350 to work, so I'm looking to get the car on the road asap!

Is it much trouble to rebuild the LT1 to a carbed engine? I'm not interested in using a lot of time to get the wiring and stuff until this winter, so I'm going to take the injection system off, and using an edelbrock intake with 650 carb which I got on the old one. Re-using the th-700r4 until I get the wiring stuff done this winter.

What can i expect of problems regarding this?

Mind you, I'm not going to do the swap personally, I have a mechanic for that. I just want to know if there's any surprises I might need a heads up for!

Andy
Reply
Old May 16, 2011 | 09:00 PM
  #2  
Pocket's Avatar
Supreme Member
20 Year Member
iTrader: (24)
 
Joined: Jun 2005
Posts: 8,117
Likes: 362
From: NC
Car: 91 Trans Am
Re: Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

Use a LT1 specific carb intake and conventional SBC distributor. Dont worry about the opti up front, leave it unplugged but in place to fill the hole. Use all the LT1 accessories because generic SBC stuff wont bolt up

That makes it essentially a high compression SBC
Reply
Old May 17, 2011 | 02:20 AM
  #3  
82recarro's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2004
Posts: 27
Likes: 0
From: Oslo, Norway
Car: 1984 T/A Recaro
Engine: 350
Transmission: th700r4
Axle/Gears: Have no idea
Re: Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

can you reccomend a carb intake for me?
Reply
Old May 17, 2011 | 06:50 AM
  #4  
Pocket's Avatar
Supreme Member
20 Year Member
iTrader: (24)
 
Joined: Jun 2005
Posts: 8,117
Likes: 362
From: NC
Car: 91 Trans Am
Re: Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

This is the GMPP intake for LT1s, its not the best, but choices are quite limited for GEN II engines

http://www.summitracing.com/parts/NAL-24502592/
Reply
Old Jun 8, 2011 | 11:28 PM
  #5  
Transamthunder's Avatar
Junior Member
iTrader: (1)
 
Joined: Feb 2007
Posts: 92
Likes: 0
Re: Swapping from 350/700r4 to a LT1/700R4 - Hard to rebuild to carb?

That would be quickest for sure, I waited a week to have my intake drilled for the LT1 heads. I finally got mine started tonight, running an altered Vic jr with a Holly 600 DP. I would liked to have gotten a 650, or maybe something in a Vac secondary. Just blipping the throttle though I have some flat fall on its face tuning to do. Looking forward to seeing yours come together too. Carb Lt1s are kinda of a minority around here.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
midge54
Engine/Drivetrain/Suspension Wanted
1
Jan 29, 2017 07:00 PM
86White_T/A305
LTX and LSX
0
Aug 17, 2015 12:16 AM
GVMV
Engine/Drivetrain/Suspension Wanted
1
Aug 16, 2015 08:01 PM
cstrobel65
Tech / General Engine
5
Aug 15, 2015 10:19 AM
hokis
Transmissions and Drivetrain
9
Aug 9, 2015 03:57 PM




All times are GMT -5. The time now is 06:07 PM.