All pro heads

Status
Not open for further replies.

Pickedsilly

Not-quite-so-new-guy
May 11, 2019
5
0
3
Dunnville Ontario
I pick up a set of all pro heads s-200 probably from the early 90’s, tried to get the specs on them from all pro, didn’t get help from them other than wanting to sell me a new set, haven’t found anything on line, any information would be greatly appreciated
 
Oct 14, 2008
8,806
7,746
113
Melville,Saskatchewan
Assuming sbc heads, probably 200cc intake runners and 2.02/1.60 valves. Aluminum or cast iron?
 
  • Like
Reactions: 1 user
Oct 14, 2008
8,806
7,746
113
Melville,Saskatchewan
The actual as cast CC can vary quite a bit, so measuring is a good idea. You can polish the chambers if larger chambers are needed.
 

shoedoos

Master Mechanic
Jul 3, 2012
406
403
63
All-Pro have always been good heads. The age may be of concern though, might be worth doing a quick ball bearing hardness test (Youtube will show you how) to confirm their health. Have they been worked over at all? And it might be worth checking their valve configuration as they were one of the first to move intake and exhaust seats around. If that is the case you may be in for special valvetrain components (guideplates/rockers etc) if they didn't come with the heads.

Got some pics of them and any identifying marks?
 
  • Like
Reactions: 1 user

64nailhead

Goat Herder
Dec 1, 2014
5,659
1
12,059
113
Upstate NY
Pretty tough to tell much about them without spending some money on them unless you have a flow bench and inside micrometer.

They make crazy, top end stuff at a price that is not cheap. Have you mocked them up on a block to see if you need anything special in terms of intake or exhaust manifolds?
 

Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
4,861
6,888
113
Wellston, OK
Being used, no telling if they've been milled or anything else...I'd CC them if it is critical to your build to know the volume.
 
Status
Not open for further replies.

GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.

Please support GBodyForum Sponsors

Classic Truck Consoles Dixie Restoration Depot UMI Performance

Contact [email protected] for info on becoming a sponsor