I still have the motor .. I took it out of a 1970 one ton.
Had it rebuilt .. And put it in a 1987 one ton van ....I am almost 100% sure it has the 76cc heads . And 2441 sounds familiar:??? Block was the 3970010 block
Four bolt main . Not a nice job getting a tappet cover off a van ;; BUT I may have too now ::
Unless some one had an extra 300 horse sticker around .
Or the motor had the covers changed .. And those sticker were on them :????
But this van had no power steering .. No power brakes ..Standard trans with three on the tree . the tappet pans had no holes for pcv valve . No pollution pump .. Nothing . Just a four barrel carb .
So I thought maybe the extra horse power was because it did not have to drive anything like an auto transmission; lose anything for power brakes etc .
Because this motor had no hookups for my newer van .. I had to use an intake and valve covers for a 84 350 to make it hook up
But when the guy rebuilt it he said he used the ORIGINAL specs for a 300 horse motor. So he must have thought it was a 300 horse motor too..
So I guess I ""ASSUMED"" LOL there was different cams for the higher horsepower motor .
Now I have to look up the 041 casting /
Thanks for the help .. Maybe I will get this right in the end