Big Block Accessory Question
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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
Big Block Accessory Question
I know big block cars except the Corvette used the short neck water pump up to 68, and the long pump from 69 on. Did the 68 and 69 blocks and heads have the accessory mounting holes in the same locations?
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Joined: Jan 2000
Posts: 20,981
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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
It's not the holes on the pump I'm worried about, it's the ones on the heads.
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
To my knowledge all big blocks from 65 to present have accessory bolt holes in the heads and in the same locations.
Up to 1970 they used the large spark plugs with the gasket washer. Somewhere in 1970 they changed to the tapered seat plugs.
Up to 1970 they used the large spark plugs with the gasket washer. Somewhere in 1970 they changed to the tapered seat plugs.
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