68-77 vs 77-80 350 olds rebuild kits
#1
68-77 vs 77-80 350 olds rebuild kits
I am planning a light overhaul on a 1978 olds 350 with #8 heads.
My plan was to put a little better cam, smaller cc relief pistons, and reuse the #8 heads. 9:1 would be ideal, if it'll happen.
Anyone know the difference between the 2 rebuild kits? Looking at the sealed power cast piston kit. I'm not sure if it would be any better far as the pistons go.
Also, I am replacing the olds 307 in my 1986 cutlass with the above engine. Can I reuse the exhaust manifolds? Or, they'are small port too. Might put back the CC carb system on the 350 too. Can I gut the 307 distributor and put it on the 350 olds distributor. I believe the roller cam and regular flat tappet cam distributor gears are different.
My plan was to put a little better cam, smaller cc relief pistons, and reuse the #8 heads. 9:1 would be ideal, if it'll happen.
Anyone know the difference between the 2 rebuild kits? Looking at the sealed power cast piston kit. I'm not sure if it would be any better far as the pistons go.
Also, I am replacing the olds 307 in my 1986 cutlass with the above engine. Can I reuse the exhaust manifolds? Or, they'are small port too. Might put back the CC carb system on the 350 too. Can I gut the 307 distributor and put it on the 350 olds distributor. I believe the roller cam and regular flat tappet cam distributor gears are different.
Last edited by sailinghudson25; November 17th, 2017 at 08:50 AM.
#3
And stay away from the cast pistons as they are short on compression height and will result in disappointing compression ratio,especially with large combustion chamber #8 heads. Use forged flat tops as posted above in order to get the CR you mentioned.
#4
All 1968-1976 Olds 350 engines are solid main web and use 7/16" head bolts.
All 1977-1980 Olds 350 gasoline engines are windowed main web and use 1/2" head bolts.
FelPro shows different head gasket P/Ns for 68-76 and 77-80. Here's the early gasket (P/N 8171PT1):
Here's the 1977-80 gasket (P/N 8506PT):
All 1977-1980 Olds 350 gasoline engines are windowed main web and use 1/2" head bolts.
FelPro shows different head gasket P/Ns for 68-76 and 77-80. Here's the early gasket (P/N 8171PT1):
Here's the 1977-80 gasket (P/N 8506PT):
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