RogerD's 69 COPO/Dick Harrell Chevelle - Chevrolet Chevelle Forums

#23

10-15-2012, 01:57 PM

carpoor

Senior Member

Join Date: Dec 2011

Location: Floriduh

Posts: 2,404

Quote:

Originally Posted by RogerD

840's on my heads and at least two other COPO 69 Chevelle motors - one an original owner car.

RogerD

Thanks Roger, looks like I stand corrected. Now my next question... is it true that the 840's had small exhaust valves? (1.725" vs. 1.88's)

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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi

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