327c.i. Sbc running rough, advice needed

[Bullett]

Originally Posted by geezer#99

Apoligies to Bullett!!
I'm not slamming your truck. Just made an observation on your motor.
Something else to check for you. You seem to be a hands on guy. A very good attribute. Too many cheque writer's out there.
Any where on a sbc where the intake bolts line up with the pushrods (4 spots IIRC) you need to use the correct length bolts. Otherwise a longer bolt could contact the pushrod and cause problems like you're having.

No apologies needed, everyone has an opinion on stuff and I am o.k. With any of that, again, it is situations like this that I pick up at least some type of knowledge. I am very much a hands on guy, even though Lymes disease is trying every trick in the book to take it away from me. I am millwright by trade, restore vintage snowmobiles





I do 100% of all the work on my vintage sleds. I lay all the paint, rebuild the entire 2stroke motors (except for sending out the cranks) and have even been known to get behind a sewing machine and attempt a seat cover or 2.
I also built my own 2000sq. Ft. Home pretty much by myself....my day job, I tear down and do complete overhauls on hydro power generating turbines.....Not trying to to sound like a rocket scientist, I guess my point is..THESE FORUMS ARE EXTREMELY IMPORTANT TO SOME TYPES OF PEOPLE THAT HAVE AA TRUE PASSION TO LEARN NEW STUFF AND DO THEIR OWN WORK. Doing stuff like this makes some of us people tick, just the way some of us are wired. I am not only a taker from these forums, I try to give also. If you go to www.dootalk.com under the vintage snowmobile section, do a search under my screen name (bullett) you will find an online build thread that I did to help people learn how to restore and work on vintage ski Doo's. Last time I looked it had 21-22k hits. ...anyways, back to this post, bj383 nailed it. My cam lobes are to flat to lift the valves. I had one of my buddies come take a look. We spun the motor over by hand as one poster instructed and the rockers on that cyl. Hardly wiggled. There were a couple more that weren't much better....also, took the numbers off the heads (3998993) and found they were from a 72 chevy 350 crate motor. Maybe a 327 block? Dunno, doesn't really matter at this point. I am picking up a 355 CSB, with 15-20k miles, wined aluminum intake, Holley 650 4-barrel, newly rebuilt 350th auto tranny w/shift kit motor has all MSD electronic ignition, headers and some tricked out heads. The PO just pulled this stuff out of his truck to put a newer LS fuel injected set up in. I am going to have $600 in the whole set up, fair enough. I would have wanted a alum. Intake/Holley carb and elec. ignition on my motor anyhow so all is good. Should be a quick easy install. I will try and remember to take pics and post as I go along. Thanks again for everyone's input and ideas.