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Old 05-26-2013, 08:18 AM
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SBC cylinderhead chambers

I was wondering how much gm changed the sizes of the chambers on factory heads, mainly the later model (76-86) 350 sbc. Just out of curiosity did they range from 58cc to 80cc and up? Or did most come with a single size?

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Old 05-26-2013, 09:26 AM
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Originally Posted by Slammedsi View Post
I was wondering how much gm changed the sizes of the chambers on factory heads, mainly the later model (76-86) 350 sbc. Just out of curiosity did they range from 58cc to 80cc and up? Or did most come with a single size?
Ayuh,... I think you'll find the 58cc heads are 305 heads, 'n the largest chambers I can think of are the 76cc heads....
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Old 05-26-2013, 10:51 AM
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Ayuh,... I think you'll find the 58cc heads are 305 heads, 'n the largest chambers I can think of are the 76cc heads....
Besides the double hump heads and the vortecs is there a good casting number to look for when looking for stockers. The reason I ask is, I've got a old friend that has acquried close to 50 sets of heads over his lifetime. When I dig into them I would like to know what to look for.
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Old 05-26-2013, 11:13 AM
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The stock castings is the main reason for the aftermarket heads.Yrs ago we found even with the experience of a porter like Joe Mondello how much we where limited.....................
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Old 05-26-2013, 01:00 PM
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The stock castings is the main reason for the aftermarket heads.Yrs ago we found even with the experience of a porter like Joe Mondello how much we where limited.....................
Oh I'm not consirned with performance figures. But sence I am getting a set for free I would like to have a good set other then a smogger set if there is one in his lot of heads.I already own a set of aluminum heads for a sbc. I'm just looking to add to my own personal collection of parts.
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Old 05-26-2013, 01:27 PM
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The 58cc Vett aluminum heads with the dished pistons that come with them
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Old 05-26-2013, 02:25 PM
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Originally Posted by Slammedsi View Post
Oh I'm not consirned with performance figures. But sence I am getting a set for free I would like to have a good set other then a smogger set if there is one in his lot of heads.I already own a set of aluminum heads for a sbc. I'm just looking to add to my own personal collection of parts.
Go through the list of Chevy heads here......
Stan Weiss' - Cylinder Head Flow Data at 28 Inches of Water -- DFW / FLW Flow Files for use with Engine Simulation Software
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Old 05-26-2013, 04:27 PM
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The 58cc Vett aluminum heads with the dished pistons that come with them
I only wish he had a set to give me! Then I doubt they would be free.

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Thanks for the link.
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Old 05-26-2013, 09:57 PM
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Once you get beyond the Vortecs and the #113 5.7L L-98 TPI Vette aluminum heads
the next best head is the "083" 64cc cast head from the L-98 5.7L TPI Camaro Firebird motors.
Its a diamond in the rough if you like porting your own stock heads.
Good power when ported , 64cc chamber
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Old 05-27-2013, 06:48 AM
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It appears no one wants to answer this one...

350/400 heads are mostly 76, as stated. There are good ones and bad ones. The "heavy casting" 624s and 882s are okay, deficient exhaust port. The light castings of those numbers will crack if you breath on them with a fever. The large chamber heads are plentiful, but certain castings are desirable in racing classes where no modifications are allowed. 441 is considered the "best" large chamber head. It's precluded by rule in some circle track classes BECAUSE it's so good (compared to other stock castings). 336, 487(X), 991 and 993 are among the more popular, with good exhaust ports.

There are a handful of small-chamber 350 heads, too. 041 is the most common, and a pretty good head. It rendered virtually all the 327 stuff obsolete.

There's still a decent "market" for the iron heads among the circle track crowd. Restoration guys are also looking for "certain" castings to make things correct. Date codes are important to them.

FWIW

Jim
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Old 05-27-2013, 01:27 PM
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It appears no one wants to answer this one...

350/400 heads are mostly 76, as stated. There are good ones and bad ones. The "heavy casting" 624s and 882s are okay, deficient exhaust port. The light castings of those numbers will crack if you breath on them with a fever. The large chamber heads are plentiful, but certain castings are desirable in racing classes where no modifications are allowed. 441 is considered the "best" large chamber head. It's precluded by rule in some circle track classes BECAUSE it's so good (compared to other stock castings). 336, 487(X), 991 and 993 are among the more popular, with good exhaust ports.

There are a handful of small-chamber 350 heads, too. 041 is the most common, and a pretty good head. It rendered virtually all the 327 stuff obsolete.

There's still a decent "market" for the iron heads among the circle track crowd. Restoration guys are also looking for "certain" castings to make things correct. Date codes are important to them.

FWIW

Jim

I left with two sets of assembled 882 heads and a set of 305 heads with the smaller chambers. Not sure of casting numbers as there still in the back of the truck and attached to a complete 305 haha. Not bad for some free parts huh?
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