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#1
08-17-2014, 05:03 AM
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1969 Z28 heads
I have a top end off a 1969 Z28 that has been sitting on a shelf for over 20 years, The distributor is 9D2 the one head is E29 and is a 186 casting the other head is a 3947041 with a D119 casting both heads appear to be the same cond with 202 valves both heads have the o rockers. I have read 302 came with the 041 heads anybody ever seen 041 heads on a Z
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am 
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#2
08-17-2014, 10:39 AM
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Re: 1969 Z28 heads
Generally, the #041 head was used on the 350cid./300hp. L48 engine for the 1969 model year. However, Alan L. Colvin's 1965-69 "Chevy by the Numbers" (pages 102 & 106) states the #186 head may have possibly been used interchangeably with the #041 head through the 1969-70 production. Although the Z28 did use 2.02/1.60 valves and the SS350 used 1.94/1.50 both #186 and the #041 heads appear to have a 63.305cc. unless it was used on a Corvette application. To answer your question, no I have never seen #041 heads on a Z28. You might have a mismatch or maybe at some point throughout the years someone had modified that particular #041 head?? Maybe another sYc member has had the same findings as you did and they might be able to shed more light on this subject.
Sal [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]
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I currently own a 1969 Camaro SS350. Although the original drivetrain is long gone, this 4/speed car has a March '69 HC coded block with #041 heads. The transmission is an M20 Muncie #660 case and the rearend is a BS coded 12 bolt posi. Built in Van Nuys.
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