Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

Anyone who has done a V6 to V8 swap, and/or an auto to manual swap. Questions.

Thread Tools
 
Search this Thread
 
Old Jul 3, 2002 | 11:37 PM
  #1  
Xenodrgn's Avatar
Thread Starter
Moderator
 
Joined: Apr 2001
Posts: 1,408
Likes: 1
From: Bayville NJ and Newark at NJIT.
Anyone who has done a V6 to V8 swap, and/or an auto to manual swap. Questions.

For V6 to V8... more specifically, LB8 to LG4.. keeping the LG4 computer (for now).

Any problems to worry about other than the brake line and the obvious spring problem. What fuel pressor regulator should I use? How should I rig up the fuel pump relay to come on with the key without the LB8 computer?

---

For 700R4 to T5
Anything to watch out for... will the speedo cables drop into place, all the cables line up? Drive shafts the same length? How does the clutch adjustment go once it's in, cable routing, pedal feel? Ect..?

---

Should I drop a cam in the LG4 while it's out.... it would make sense right?

And yes, both cars run and drive, and will be right next to each other during the swap... Mine is an 85 LB8, the other is an 87 LG4.

I would like to know specifics, anything to help this along and make it easier... any do's or don'ts... Ect.... Just anything you can add...

Yes the swap in total will be LB8/700R4 to LG4/T5.
Reply
Old Jul 3, 2002 | 11:39 PM
  #2  
Xenodrgn's Avatar
Thread Starter
Moderator
 
Joined: Apr 2001
Posts: 1,408
Likes: 1
From: Bayville NJ and Newark at NJIT.
Come to think of it, should I do anything else to the LG4 while it's out?
Reply
Old Jul 4, 2002 | 12:54 AM
  #3  
chevykillaz's Avatar
Banned
 
Joined: Jul 2002
Posts: 10
Likes: 0
From: Chevland, P.I.M.P.S.A
editted due to lack of intelligent content

Last edited by ede; Jul 4, 2002 at 07:33 AM.
Reply
Old Jul 4, 2002 | 05:29 AM
  #4  
1991tealRSt-topGuy's Avatar
Supreme Member
 
Joined: Jul 2000
Posts: 4,541
Likes: 2
Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
Originally posted by chevykillaz
Drive your car off a cliff or inta a wall. K? Than buy a V8 Maro that "Men" drive. K? Then you will be a "Man" K? Show some respect to the BOWTIE. Foo.


not this ******* again


we keep banning him, but he keeps on regsitering

PAY NO ATTENTION TO HIM, FOR WE WILL BAN HIM, AGAIN
Reply
Old Jul 4, 2002 | 05:41 AM
  #5  
Blackened's Avatar
Senior Member
 
Joined: Jan 2002
Posts: 661
Likes: 1
For the love of ***, don't put a slow LG4 in there! There's no point to swapping your 130 HP V6 for a 150 HP V8. Get a 350 and some decent heads on it first.

As far as the auto to T5. Driveshaft will work, everything should drop it correctly IF you got every part you need.
Reply
Old Jul 4, 2002 | 05:44 AM
  #6  
1991tealRSt-topGuy's Avatar
Supreme Member
 
Joined: Jul 2000
Posts: 4,541
Likes: 2
Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
oh yeah, i forgot that we'll need to change your springs


i dont have the tools for that, per say, but a few weeks after we do the engine swap, i'll get permission from my boss and me and another mechanic will do it after hours at work

you'll just have to drive around a few weeks with the V6 springs



so did you buy that LG4?

how many miles are on it?

is the motor in good shape?

YOU GOT THE BEST LG4 CHEVY EVER MADE!!!!!!

1987........roller cam 170HP :rockon:

dont forget that we also need the fuel pressure regulator

MPFI pressure is way too high for a carbed engine


if you want my honest opinion, i'd say wait for the cam until you can afford some nice heads too

get the cam, heads, and intake manifold all at once

instead of the cam, consider a performance clutch while the engine and trans are out...........really easy to do then

clutch is not adjustable on these cars

its hydraulic so it works only one way

we need the LG4's radiator too
Reply
Old Jul 4, 2002 | 12:48 PM
  #7  
Xenodrgn's Avatar
Thread Starter
Moderator
 
Joined: Apr 2001
Posts: 1,408
Likes: 1
From: Bayville NJ and Newark at NJIT.
I'm swapping in the LG4 because I can get the entire running car for 100-200 dollars, and my V6 is probably only making half the power it should and is going south...

And no, I still havn't gotten it... I'm calling her today.

And 'f' the springs, I like the lowered-in-the-front stance...
Reply
Old Jul 4, 2002 | 01:16 PM
  #8  
1991tealRSt-topGuy's Avatar
Supreme Member
 
Joined: Jul 2000
Posts: 4,541
Likes: 2
Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
Originally posted by Xenodrgn
I'm swapping in the LG4 because I can get the entire running car for 100-200 dollars, and my V6 is probably only making half the power it should and is going south...

And no, I still havn't gotten it... I'm calling her today.

And 'f' the springs, I like the lowered-in-the-front stance...

Erik, your awesome dude!!!!!!!!

lemme know when you get the car and we'll start the project

please though, while we are swapping, consider a high performance clutch

you might want to also consider new motor mounts

plus you NEED the fuel pressure regulator

not too shabby to swap to a V8
Reply
Old Jul 4, 2002 | 03:00 PM
  #9  
dimented24x7's Avatar
Supreme Member
iTrader: (2)
 
Joined: Jan 2002
Posts: 9,962
Likes: 5
From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
replacing the springs is a good idea... You'll have oatmeal handling w/ the v6 springs because the srping rates are too low for the added weight
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
84z96L31vortec
Tech / General Engine
7
Aug 20, 2017 12:16 AM
E Rod
LTX and LSX
5
Aug 28, 2015 05:17 AM
jharrison5
Engine Swap
5
Aug 19, 2015 05:53 PM
84z96L31vortec
North East Region
1
Aug 10, 2015 08:27 PM




All times are GMT -5. The time now is 09:25 AM.