Differences in 283's
Thread Starter
Instructor
Joined: Aug 2015
Posts: 189
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From: Goshen KY
Differences in 283's
I need a 283 for my 58 project. I cannot afford to go "numbers correct" but would like to be "period correct". Are there any major differences, except for heads and intakes, in 283's from 57 to 65? I found a good deal on a 64 283. Would it look like a 58 except for numbers?
Team Owner
Joined: Mar 2003
Posts: 26,118
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From: Greenville, Indiana
I need a 283 for my 58 project. I cannot afford to go "numbers correct" but would like to be "period correct". Are there any major differences, except for heads and intakes, in 283's from 57 to 65? I found a good deal on a 64 283. Would it look like a 58 except for numbers?
Race Director
Joined: Feb 2007
Posts: 15,455
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From: northern california
C2 of Year Finalist (track prepared) 2019
Mike pretty well nailed it.
To what he wrote, I'd add that blocks made for model year '59 and later use a neoprene rear main seal while earlier blocks were designed to use a graphite impregnated rope seal. While it's possible to retrofit a neoprene seal to the earlier blocks (there are kits), I think it's better to just start with a block already designed for the later seal, like the '64 block you've found.
Jim
To what he wrote, I'd add that blocks made for model year '59 and later use a neoprene rear main seal while earlier blocks were designed to use a graphite impregnated rope seal. While it's possible to retrofit a neoprene seal to the earlier blocks (there are kits), I think it's better to just start with a block already designed for the later seal, like the '64 block you've found.
Jim
