big block 3rd gen?
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Supreme Member
Joined: Jun 2011
Posts: 2,036
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From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
big block 3rd gen?
i have a 87 z body that was a lg4 car,i happen to also have a 89 454 ,question is,will it fit? without mods? and 700r4 or 4l80? has anyone done this conversion?? it looks like fun!!!
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: big block 3rd gen?
there are tons of big block threads in this section, perhaps check out the search feature a little 
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Joined: Mar 2004
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From: Clovis NM
Car: 2012 F350 lariot/1991 Camaro RS
Engine: Powerstroke/6.0
Transmission: 6R100/4L80e
Axle/Gears: 3.73/3.42
Re: big block 3rd gen?
pshhh big blocks thats yesterdays news were onto diesels now
LQ4/9 are the in swaps now
do a search there are lots of threads but yes and yes to your questions
LQ4/9 are the in swaps now
do a search there are lots of threads but yes and yes to your questions
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Joined: Feb 2011
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From: Virginia
Car: 85 camaro z28
Engine: 355
Transmission: t-5
Axle/Gears: 3.73
Re: big block 3rd gen?
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From: Batesville, AR
Car: 1990 Formula Firebird
Engine: 350 (5.7) TPI
Transmission: WC T5
Axle/Gears: 3.42 POSI
Re: big block 3rd gen?
I'd rather fit a 455 in it, which I might kinda have. I think it should fit fine in my car...?
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From: portland, michigan
Car: 85 iroc-z28
Engine: 049 headed bbc 4?? C.I.D
Transmission: T56
Axle/Gears: 3:73 posi
Re: big block 3rd gen?
Yes it fits.. Mods are necessary if you're Gunna do it on the cheap.
Good headers like ed quays will make life WAYYY easier. Also Gunna need a built 700 if you plan putting some through it. I run a t56 in my big block 85 but its not cheap to buy parts that will handle the torque.
Also Gunna need a good cooling system aswell as the stock radiator ain't Gunna cut it with a big block. Also I would go aluminum heads to get the weight more around the range of a cast headed small block.
As what Steve said use the search at the top and a lot of swaps have been done.
Good headers like ed quays will make life WAYYY easier. Also Gunna need a built 700 if you plan putting some through it. I run a t56 in my big block 85 but its not cheap to buy parts that will handle the torque.
Also Gunna need a good cooling system aswell as the stock radiator ain't Gunna cut it with a big block. Also I would go aluminum heads to get the weight more around the range of a cast headed small block.
As what Steve said use the search at the top and a lot of swaps have been done.
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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
If this swap wasn't so rare, we'd have a sticky about it in the top section of this forum.
Wait, we do have a sticky about BBC swaps into 3rd gens in the top section of this forum...
Also have a sticky about Pontiac engines into 3rd gens in the top section of this forum.
Quick answer, though - you can't do it "without mods".
Wait, we do have a sticky about BBC swaps into 3rd gens in the top section of this forum...
Also have a sticky about Pontiac engines into 3rd gens in the top section of this forum.
Quick answer, though - you can't do it "without mods".
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