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Old 12-24-2012, 05:57 AM
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Caprice Drive Shaft Length & 8.5" Rear End

Hi, i'm in the middle of building my 1980 caprice street sleeper. I have a MINT fresh 1980 4 door with genuine 65000 miles, but it's a 267CI. I'm dropping in a 1973 4 bolt 350 i'm building to go it with a built TH350 trans. My problem is this- I bought a 8.5" rear end out a 1978 caprice (low miles) it's got a eaton posi in very good condition with 2.41 gears (yuk i hear you say) but i want economy an the highway and some get up n go. My 350 build is for 340 hp @ 5500 and 397lbft @ 3500 so it's a torque monster for a 350! Anyhow back to my question i got this rear end and and fitted it to the 1980 but the original rear was 7.5" hence my drive shaft is too long (the 78 shaft was cut up for a friends pickup build, doh!) what length shaft should go between my th350 and my 8.5" rear??? The rear was out a caprice but is non C clip with B.O.P style rear cover, is this a olds type axle??? my 7.5" shaft measures around 58.70"?

Help my guys, by the way i cant measure my trans to axle as the motor is out..

this is the only pic i have of the rear at the moment as it's now under the chevy

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