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Cylinder head question

Started by firecapt854, January 19, 2013, 11:23:33 AM

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firecapt854



Hi all!!! this is my dilema, Ive been searching for a set of 041 heads and have either come up with nothing or one's with the wrong dates( I have a original 350 SS, oct 68 build, and want to keep it that way). i cant get a clear answer on this, did ANY SS 350's come with 186 heads? Ive had some people say they will work, i do know that but i want to keep it the way it was born(im crazy like that). thanks all for you input!!!!!

x77-69z28

I can't say for sure, but there are 186 heads with 1.94 intake valves. I would say yes
69 Z/28 X77 burnished brown, 711 int 05A bought in 78
70 Z28 forrest green, green int, M40, bk vinyl roof PROJECT
99 SS hugger orange 6spd NO TTOPS bought new 1 of 54
15 z/28 Arctic white, A/C 505 HP #251

JohnZ

Jerry's '69 book says that both 041 and 186 heads were used on SS350's (with 1.94/1.5 valves).
'69 Z/28
Fathom Green
CRG

z28z11

Alan Colvin's Chevrolet by the Numbers supports it. I have seen both on L48 69's.

Regards,
Steve
1968 Z28 M21/U17 BRG/W 1967 Chevy ll Nova SS 
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06  1949 3100 5wd 235/6

firecapt854

Ok, i have my eye on a set,correct dates, they are a little pricey and i did not want to waste $ on something that would be incorrect for a future full blown restoration. I knew i could count on you guys! Ive talked to a few people and they said only the 041's would be correct for my car. Thanks all!

bertfam

Of all the 69 L48's in the database (over 800), only five have 186 heads. Of that, one is mismatched (one 041 head and one 186 head), two have question marks beside the entry and two "may" be original. Of those two, one is a LA car from mid November, 1968 and the other is a Norwood car from early February, 1969.

Now, of the other L48's we have, there's not a lot of info on heads, but 30 of them have 041's.

Ed

firecapt854

Ed,
    Thanks for the info! It amazes me that of the thousands of 041 heads out there cast in oct 68 i cant find a single one!

69Z28-RS

you've gotta be patient, Capt...  :)

and I owe you a Thanks..  :) ...  I was at the Autofest in Nashville last Saturday, and each time I saw small block '69 heads, I stopped and inquired about the numbers.. (thinking of your 041!)...  well, I didn't find your head, BUT..  in my search, I accidentally came across a matched set of 186 heads which are *perfect* for replacing the heads I sold off my Z28 back in the seventies!!   .. Now I'm just hoping they turn out to be good and rebuildable.. :)
I've been looking for good dates for 186 so long, I'd given up and *settled* on some not quite as good, and I probably wouldn't have bothered checking numbers on the heads had I not been thinking about your need for an 041..
Gary / 69Z28-RS
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

firecapt854

well your welcome gary!!!! hope they are rebuildable! good luck!