hellllooo...any way to verify the angle of pushrod ??? i cheated & stuck large threaded rods (3/8") into the pushrod hole of my B head & did the same to my #6 350 head.. lined "em up & they both visually were the same..i dont know if this is truelly legit but hopefully it is...of note to any who think the 65 B Heads were all 45* think again... i found an OLDS site where they were talking about all the different lifter sizes & bank angles degrees etc..quite a bit of the 425 motors got the more modern 39* angle than u may realize in 1965 ,66..thanx for your input & help..now get out there & rip up the road !!

 

I thought I had a good post that would help you... but realized I didn't. If you have the time try the search option and read through the threads you find. John

 

I stole this off of another thread around here somewhere. I'm too lazy to find it to give credit to whoever posted it...

 

ya i dont have the block just the B Heads...i think there may be some engine id # stamped on the right front head but i dont know if it will help...one site i was reading was blabbing about some kind of dowel pin hole/spot on the backside of the block that would indicate wether 39* or 45* depending on location of said spot..but im otta luck on that option...i lined my 2 heads up like a gunsight when i did that cheater method just running it by u guys to see if its legit or works..

 

I don't know about that for sure. I have 'B' heads on my 45 degree block.

 

I have B heads on my 39deg '66 Toro engine #N687578T(head stamp)....

 

'65 B heads???

 

Dang it, now I have to go out see what my stamp says...

 

Doh! Kurt, I didn't even catch that the B heads were identified as 1965. jc83 if you have B heads they're from a 1966 not a 1965. John

 

I noticed the '65 B head thing, but figured I'd cut the OP some slack.

 

That drill spot is on the front of the block - the rib above the timing cover flange. It is a reliable indicator of a .921" lifter/39 degree block.
You can see it in this photo:

 

hi ..so sorry about 65 vs. 66 B heads...that was me reading that olds info tech site that was talking about heads & years they were used...so anybody out there have both types of heads 39* 45* and could u do me a big favor just line em up like a gunsight like i did & tell me if there is a huge descrepancy/ noticeable difference in angles of rods sticking out of your pushrod holes..thanx for your time & help --jc--