1969 Z-28 041 heads - Page 2

rsatz28 · #11 08-26-2005, 05:57 AM

The pics Bud sent me, these 041 heads have 202's and 160's

**Lynn** · #12 08-26-2005, 07:00 AM

[ QUOTE ]
041's didn't come on 69Z's. 186 casting did. 041 were small valves and 186's also had a 1.94 intake valve. 350/300hp cars were 1.94's. some 186 casting suppositly showed up on SS cars, but I never saw them.

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Sam:

I have seen quite a few 186 heads on 69 350's. In fact I almost bought a 69 full size a few years back just to get the block and heads (which were both 186's) a real "old lady's car that had not been tampered with. A friend of mine bought a full size chevy for the same reason and it turned out to have a 186 head on one side and an 041 on the other, with casting dates within a week of each other and just prior to the build date. Both still had the factory head gaskets.

Like you, I have never seen a Z/28 with 041 heads, but Colvin's book clearly states it could be. I have always been skeptical.

Anyone else?

Lynn

**Jonesy** · #13 08-26-2005, 07:57 AM

My car has 186 heads and is an SS350 car and the heads are original.
I doubt any 041 head came on a 69 z28. 041 heads came on Tonawanda built engines in the many cases I have seen. I have never seen a documented DZ engine with 041 heads.

budnate · #14 08-26-2005, 09:03 AM

Honestly dont know guys, the book said application so I went off that, and as far as I can tell these are stock looking heads with screw in studs and big stock looking valves, spring pockets are stock "not" "cut" /opened up for oversize springs, no Z expert by a long shot but they sure looked stock to me.

Mortec says the same thing....I would agree Colvine may be wrong, but Mortec surely would have corrected any typo being a online site that can be corrected with a key stroke.

3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head

I will take this to pm with Rob, but just so we are clear I am very honest and dont sell Junk, and if I dont know about something I tell ya up front if its junk or what ever. I also will take back anything from a member on this site minus shipping if they think they dont like whatever they picked up.

no offense taken, this is just for all the lurkers that dont speak up much I dont want them wondering wtf?? about me.

Bud.

**Salvatore** · #15 08-26-2005, 03:37 PM

69 Z/28 heads have pressed in studs. I believe the LT1 186 heads started the screw in studs. I am not really going by a book just memory. Could be a little foggy these days.

DarrenX33 · #16 08-26-2005, 04:39 PM

[ QUOTE ]
I am not really going by a book just memory

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Your memory is as sharp as a tack!

Schonyenko2 · #17 08-26-2005, 06:10 PM

I believe Colvin's book also lists 041 heads for 70 Yenko deuces.I discussed this with Marlin some time ago, and so far none have been found with them on.
They're a very good head.

**YENKO DEUCE REGISTRY** · #18 08-26-2005, 07:21 PM

To our knowledge and research, the Z28 engines came with 186's from the factory, and the replacement head was the 041. Several claims have been made that the 041 was factory installed, so we checked into it and found none. In addition to the Z28's, we checked every deuce we could and every deuce has the 186's.

I wonder what the Certified Stock ruling would be on this issue? If you pulled the cover and found a pair of 041's, would they bounce you - Rob?

rsatz28 · #19 08-26-2005, 07:42 PM

[ QUOTE ]
They're a very good head.

[/ QUOTE ]

So, they would be good heads to have on a properly built SB?

**Lynn** · #20 08-26-2005, 08:14 PM

Just as good if not better than the 186 head.

Bud: I don't doubt your honesty in any way, and that was not my intent when "hijacking" this thread. I was just curious. Glad no offence was taken.

Lynn