Don sorry to bother you I found a cam on the Howard’s cam site hrc 130101-12 is this the correct one thanks again
New here hi everyone
- Thread starter Schack348
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Welcome to this great site Schack348.
Very interesting Kurt! Evidently the cooling holes were revised during 1872 production as your block has the bosses for the cooling holes and a 1872 block currently on ebay does not.
Jeff
I believe the pads were added sometime in February of 58. Cecil will know for sure.
Looks like perfect block to drill. Trying to remember if I have an 872 block to look at with my scope.
Schack,If the build sheet can't be found, here's a ''rule of thumb''to go by;If the pistons have no valve relief,they're 9.5-1,if they have a slight valve relief under the intake,they're 10,.5-1.The cam we're talking about will work with the 10.5's but you'll need to notch the 9.5';s slightly.
Right you are Scott.
Sometime after about mid Feb 58 the 872 block was modified to include the spark plug cooling waterjacket but the pads weren't drilled unless it was an FB (315hp) beginning on 5-21-58 or a truck engine after 3-27-58.
Won't there be a valve to block clearance problem if he uses Bob's heads that will have larger valves?
I think so. I'll have to check my late 872 block to verify.
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