LB9 a 2 or 4 Bolt Main?
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Joined: Mar 2004
Posts: 1,319
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From: Pittsburgh & Allentown PA
Car: 1992 Z28 (Heritage Edition)
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73 Posi
LB9 a 2 or 4 Bolt Main?
Me and my dad were having an argument as to whether the LB9 (305 TPI) engine had a 2 bolt main or a 4 bolt...
I just assumed it had a 4, but he said it was probably a 2...
Any input?? I searched this site and the internet and couldnt find anything.
I just assumed it had a 4, but he said it was probably a 2...
Any input?? I searched this site and the internet and couldnt find anything.
Joined: Jan 2006
Posts: 930
Likes: 6
From: Sweden
Car: 1989 IROC-Z
Engine: 350 TPI
Transmission: Th700R4
Axle/Gears: 3.27
Re: LB9 a 2 or 4 Bolt Main?
The 305 came with 4 bolt between 77-79 I think. (heavy duty trucks)
The rest of the 305 is 2 bolt main..
The rest of the 305 is 2 bolt main..
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From: Raleigh, NC
Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: LB9 a 2 or 4 Bolt Main?
you sure cause i didn't think any 305s has 4 bolt mains....... pretty rare block if there is a 4 bolt main 305....
Joined: Jan 2006
Posts: 930
Likes: 6
From: Sweden
Car: 1989 IROC-Z
Engine: 350 TPI
Transmission: Th700R4
Axle/Gears: 3.27
Re: LB9 a 2 or 4 Bolt Main?
I searched google thou, and it said, there was no factory made 305 4 bolt.
But there was "aftermarket" made 305 with 4 bolt main..
sorry for any inconvenience my first post have made.
But if someone finds a more relyible source please post.
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