main numbers
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From: Eastern Connecticut
Car: 1989 RS Camaro
Engine: 350 Carb(soon a 400)
Transmission: 5-Speed/th350
Axle/Gears: 10 bolt 3.73
main numbers
i was wondering if anyone knew what size mains the different blocks have. ie 283,327 small journal,large journal, 350, 400? I don't have a book that tells me and i was wondering if anyone knew. thanks
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Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Until 1969, the small journals were used, 2.3" mains and 2.0" rods.
After 1969, the journal size was increased to 2.45" mains and 2.1" rods.
The 400 only had large journals, 2.65" mains and 2.1" rods.
After 1969, the journal size was increased to 2.45" mains and 2.1" rods.
The 400 only had large journals, 2.65" mains and 2.1" rods.
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