LG4 to LB9
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Senior Member
Joined: Jan 2002
Posts: 584
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From: St.George Utah
Car: 89' Iroc
Engine: 350 TPI
Transmission: 700R4
LG4 to LB9
just bought an 84' Berlinetta, the LG4 is getting very tired, i am planning a swap for the first part of June, i have a complete LB9 that was in my 85 Iroc-Z that i totaled. My question is, what needs to be change to make this swap work?
thanks
thanks
Joined: Mar 2000
Posts: 43,187
Likes: 46
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
ECM, harness, sensors, throttle cables, in-tank fuel pump and associated relays.
Basically, if it attaches to or feeds the engine, and it looks different than the LG4 stuff, change it.
Basically, if it attaches to or feeds the engine, and it looks different than the LG4 stuff, change it.
Joined: Aug 1999
Posts: 5,280
Likes: 473
From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
There's a guy nsamed Tim Burgess that has made this swap a reality in his 84 Berlinetta. He's real cool and I'm sure he would take a little time to proivide you with some details about that exact swap.
Enjoy your *New* Berlinetta !
Enjoy your *New* Berlinetta !
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iTrader: (1)
Joined: Feb 2000
Posts: 7,964
Likes: 4
From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
I did the swap as well.
went from this,

To this,

Now I am putting this puppy in my car,

If you have everything from your old car, then the swap should be pretty easy, I had to scavenge through junkyards, spend hours at the dealer, and many hours on the net, gathering info and parts for the swap.
John Millican helped me out a great deal, as well as many members on this board and www.sethirdgen.org
went from this,

To this,

Now I am putting this puppy in my car,

If you have everything from your old car, then the swap should be pretty easy, I had to scavenge through junkyards, spend hours at the dealer, and many hours on the net, gathering info and parts for the swap.
John Millican helped me out a great deal, as well as many members on this board and www.sethirdgen.org
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Thread Starter
Senior Member
Joined: Jan 2002
Posts: 584
Likes: 0
From: St.George Utah
Car: 89' Iroc
Engine: 350 TPI
Transmission: 700R4
the guy i bought my 84 from kept telling me it was one of 30 that came from the factory with a 350 in it, but the VIN shows a 305, dont know if that helps
Originally posted by RMK
There were suposidly 50 350 sold in 86 and 87 was the first year that there was a normal production of them.
There were suposidly 50 350 sold in 86 and 87 was the first year that there was a normal production of them.
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Joined: Apr 2000
Posts: 2,337
Likes: 2
Car: 87 IROC
Engine: modded LB9
Transmission: Pro Built 700R4
When I was shopping for my car there was a dealer that claimed to have an 86 IROC with a 350. I was dubious, but he was adamint. But then again, he was also telling me that it was the same 320bhp motor that was fitted in the Corvettes!
Don't think so. I never even bothered going to look at it.
Don't think so. I never even bothered going to look at it. Thread
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