The difference in roller small blocks(Vortec vs. earlier)
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Junior Member
Joined: May 2005
Posts: 71
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From: Ohio
Car: Caprice wagon
Engine: 5.7TBI
Transmission: 700R4
The difference in roller small blocks(Vortec vs. earlier)
I was wandering if anyone knew the difference between the newer Vortec880 blocks and the older roller blocks??? I was reading a tech article where they built off a 1998 Vortec 350 block(880). Is there a difference between these blocks and the other roller blocks GM made from the early 90's on? Or are they the same as the Vortec block?Thanks.
DJ
DJ
Member
Joined: Jun 2004
Posts: 386
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From: San Antonio
Car: 78 Caprice Coupe
Engine: 355
Transmission: 4L60
Axle/Gears: 3.42
Stronger alloys, slightly different compression ratio, 4-bolt main. I'm sure there are a few others.
Nice to see another B-body wagon guy on here.
Nice to see another B-body wagon guy on here.
Senior Member
Joined: Aug 2005
Posts: 615
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From: Beautiful Tunnel Hill Georgia
Car: 67 Firebird Convertible
Engine: LB9
Transmission: 700R4
Axle/Gears: 3.55
You need to drill out two of the timing 1/4" timing cover holes if you plan to use a metal timing cover. Also without the timing ring on crank, the balancer will go in a little too far for belt alignment. Just use the plastic timing cover if you have it.
The cam in L31 is same as LT1 B body. Not a lot of lift. Use an stock LT4 if you can find one, or a F/Y body LT1 cam. It'll run a little better.
The cam in L31 is same as LT1 B body. Not a lot of lift. Use an stock LT4 if you can find one, or a F/Y body LT1 cam. It'll run a little better.
Joined: Jan 2005
Posts: 10,404
Likes: 492
From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
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