fine59 2x4 283
- Thread starter jose
- Start date
- Moderator
- #2
- Joined
- Nov 9, 2000
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- 7,464
- Location
- Edgerton, Ohio, United States
- Corvette
- 1959 black 270hp (9/2/69) 1981 Beige L81(10/20/80)
Nice!! What brand of rocker arm are you using? I have wondered if it was possible to get roller rockers and posi-locks under Corvette valve covers. Are there any clearance issues?
Tom
Tom
- Thread starter
- #3
jose
Well-known member
roller rockers
Hi
They are Comp Cam Pro magnum roller rockers , machined the base of the posi locks to remove 6mm and that gave me a clearance of 5mm to the standard rocker cover even without a gasket in place, slightly shorter pushrod to set my roller geometry correct and presto very happy with the outcome. Hope these can help others cos I could not get any info on this set up.
Hi
They are Comp Cam Pro magnum roller rockers , machined the base of the posi locks to remove 6mm and that gave me a clearance of 5mm to the standard rocker cover even without a gasket in place, slightly shorter pushrod to set my roller geometry correct and presto very happy with the outcome. Hope these can help others cos I could not get any info on this set up.
- Moderator
- #4
- Joined
- Nov 9, 2000
- Messages
- 7,464
- Location
- Edgerton, Ohio, United States
- Corvette
- 1959 black 270hp (9/2/69) 1981 Beige L81(10/20/80)
Thanks.
I've been collecting parts to do an engine for the '59 but I want it to look original under the hood except for numbers. The original block is long gone.
Tom
I've been collecting parts to do an engine for the '59 but I want it to look original under the hood except for numbers. The original block is long gone.
Tom
- Thread starter
- #5
jose
Well-known member
283 2x4
I had purchased from the USA original power pack heads 5 in total , 2 that were stolen at Montana export and 1 that never arrived got a good pair at the end ( costly exercise) The block is correct casting with original bore I machined only once to 40th the pistons be careful cos my first set were TRW flat tops but only gave me 8.5 comp which if you cam up a bit will not work its OK for stock cam and 4 barrel carb.
When running 2x4 or fuel injection you need a small cam and 10.5 comp with the 62cc chambers.This meant I had to order from Keath Black high top pistons at $600 to do the job, they seem to be the only company that had them for 283. Rods are Scat same price as resizing old rods.
carbs cost me $2000 US needing rebuild 6 years ago then 2 years latter picked up another set locally in Australia for only $500 with manifolds shit happens hey.
Well good luck hope all works out for you.
Jose
I had purchased from the USA original power pack heads 5 in total , 2 that were stolen at Montana export and 1 that never arrived got a good pair at the end ( costly exercise) The block is correct casting with original bore I machined only once to 40th the pistons be careful cos my first set were TRW flat tops but only gave me 8.5 comp which if you cam up a bit will not work its OK for stock cam and 4 barrel carb.
When running 2x4 or fuel injection you need a small cam and 10.5 comp with the 62cc chambers.This meant I had to order from Keath Black high top pistons at $600 to do the job, they seem to be the only company that had them for 283. Rods are Scat same price as resizing old rods.
carbs cost me $2000 US needing rebuild 6 years ago then 2 years latter picked up another set locally in Australia for only $500 with manifolds shit happens hey.
Well good luck hope all works out for you.
Jose
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