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.

I have a couple of LT1 questions

Thread Tools
 
Search this Thread
 
Old Aug 20, 2010 | 11:56 AM
  #1  
Demo77's Avatar
Thread Starter
Junior Member
 
Joined: May 2010
Posts: 35
Likes: 0
From: Shepherdsville Kentucky
Car: 1992 Firebird Formula
Engine: 305 TBI
Transmission: 700r4
Axle/Gears: 10 bolt 2.73 (Upgrading)
I have a couple of LT1 questions

Ok I am just curious on a few things on an LT1. I found one and the guy wants $400 for it, I am not to keen on the pricing is this around the price? Can anyone post a general pricing scale? I do not know miles/what it came out of... Also will this engine bolt up to the 700r4 trans?
Reply
Old Aug 20, 2010 | 02:00 PM
  #2  
1badeagle's Avatar
Member
iTrader: (2)
 
Joined: Nov 2009
Posts: 471
Likes: 0
From: Zanesville, Ohio
Car: 1984 Formula ws6
Engine: 370 LSX
Transmission: 4L80E with a brake and 4500 Stall
Axle/Gears: Moser 9" 4.30 gear
Re: I have a couple of LT1 questions

400$ really isnt bad if it comes with the harness and ecu. I paid 1k for mine but it only has 15k miles on it and it came with the t56. To anwser your question about the 700r4 bolt up, the anwser is yes. There are alot of guys running the 700r4 behind lt1s.
Reply
Old Aug 20, 2010 | 02:40 PM
  #3  
Wadebryant's Avatar
Supreme Member
 
Joined: Jul 2003
Posts: 1,236
Likes: 0
From: KY
Car: 87IROC, 740iBMW, 328iBMW, 86GMC
Engine: 5.7, 4.4LV8, 2.8, 6.0
Transmission: Manuals & Auto's
Axle/Gears: 3.27, 3.42
Re: I have a couple of LT1 questions

If the engine is complete, even without the harness and computer, the price might not be too out of line. Might ask for the stamping codes on the heads to ensure you at least can find out what year of vehicle provided it's engine. The heads are aluminum right? If they're cast iron then it's fairly safe to assume it's out of an SS Impala. Otherwise, if it has aluminum heads it could be out of a 92-96 Vette or 93-97 Camaro / Trans Am. The latter being most likely. The early LT1's had forged rods up unitl about 96. That's a plus. However, there are differences in the cam opti drive system and the early optis werent vented. All of those things shouldnt deter you if the bottom end is in good condition and the motor is complete. There are some good aftermarket products available for the LT1 format to build on plus, if you decide to perform an engine swap you might find that it's easier to source and purchase an aftermarket wiring harness or an LT1 to your car integration wiring harness to get it up and running. Street and Performance http://www.hotrodlane.cc can assist with a custom wiring harness. That's just one place that offers harnesses and conversion services.

As mentioned, the 700r4 will bolt right up. Early 93 Z28's had the same 700r4 systems that our 3rd gens use. So, no worries there. You'll just need the correct throttle body and brackets.

Happy hunting and good luck
Reply
Old Aug 21, 2010 | 12:14 AM
  #4  
Demo77's Avatar
Thread Starter
Junior Member
 
Joined: May 2010
Posts: 35
Likes: 0
From: Shepherdsville Kentucky
Car: 1992 Firebird Formula
Engine: 305 TBI
Transmission: 700r4
Axle/Gears: 10 bolt 2.73 (Upgrading)
Re: I have a couple of LT1 questions

Ok the guys just told me the engine is out of the SS Impala....... has 100k miles on it and the cast iron heads. Would the cast iron heads pose a problem performance wise.... I think the engines in the impalas run with lower compression.... I do not know if this is a major performance perk or plus
Reply
Old Aug 22, 2010 | 05:02 PM
  #5  
jwright32's Avatar
Junior Member
 
Joined: Jan 2010
Posts: 50
Likes: 0
From: Texas
Engine: Lt1
Transmission: TH400
Axle/Gears: 4.11
Re: I have a couple of LT1 questions

Originally Posted by Demo77
Ok the guys just told me the engine is out of the SS Impala....... has 100k miles on it and the cast iron heads. Would the cast iron heads pose a problem performance wise.... I think the engines in the impalas run with lower compression.... I do not know if this is a major performance perk or plus
your in a similar situation to mine. I got motor out an buick roadmaster. Stock these motors produced around 250hp and 330 tq at the crank. Not to sure about the compression difference in a ss to a vette or camaro but these cars where cammed for more low end torque instead of horsepower.

The price on the motor is very fair if not good, because the potential for this setup is amazing. I built a 383 with my core, had the iron heads ported and polished and runing a 503 cam. I am expecting to get around 400hp at the rear wheels on 10:1 compression. (pump gas)
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
chazman
Tech / General Engine
8
Aug 28, 2018 03:25 PM
Cleotiz
Electronics
7
Jan 6, 2018 08:56 PM
ezobens
DIY PROM
8
Aug 19, 2015 10:29 PM
TheExaminer
Tech / General Engine
10
Aug 19, 2015 10:07 PM
redmaroz
LTX and LSX
7
Aug 16, 2015 11:40 PM




All times are GMT -5. The time now is 08:36 PM.