Cam advice for more torque from 340

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I'd suggest putting the rockers on the heads AFTER the heads are on and torqued down. The cam and lifters will be pushing up on some valves but not others, and that will push on the rockers and springs in an irregular fashion, and get in the way of getting the head bolts pulled down evenly.
 
Raise the dead!
So how did this situation end up? Get it back together? Run better?
 
The only time the lifters are going to be equal height is with an old single pattern symetrical cam
the 1977 268 HE cam is dual pattern- exhaust longer and is asymetrical
either of which would make equal height not true
you can either measure the lobe height and set centerlines or set with .050 timing
setting with centerlines (say in the middle of down .050 on each side of max lift) is not perfect with asymetrical cams
ask your grinder
most cams have intake advanced 4 degrees but many are not ground on the dots
grinders move the lobes around to fit the billets/ cores especially on regrinds
do not trust the dot to dot method
YR's method takes a trained eyeeball - take a look and report
 
SSG_Karg said:
Raise the dead!
So how did this situation end up? Get it back together? Run better?
Click to expand...
Yep, got it together. Ran well. Developed blue smoke on downhill deceleration. Decided to build a 440. Sold the 340. Dropped a 440 in. Just now finalizing that.
 
WSUTARD said:
Yep, got it together. Ran well. Developed blue smoke on downhill deceleration. Decided to build a 440. Sold the 340. Dropped a 440 in. Just now finalizing that.
Click to expand...

Cool. Caint go wrong with more kyoobs. All the small block needed likely was valve stem seals.
 
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