Kerry,
>
> Most cams in the duration we're talking about have valve lifts of about
> .450", usually have a little more lift on the exhaust side. Dual pattern
> cams work real well with stock heads. Stock heads typically need more help
> on the exhaust side if you're trying to improve the Volumetric Efficiency. >
> John Lingenfelter suggests running 1.6:1 rocker arms on the exhaust side
> and 1.5:1 rocker arms on the intake side with small block Chevys to improve
> torque. I don't know much about Oldsmobile engines specifically though. >
> I definitely wouldn't exceed 215 degrees duration at .050" though. >
> I went too big on the cam in my Camaro (followed recs from cam maker) and
> I'm not real satisfied with the powerband. It screams at 3500+ but its a
> dog down low.
>
> You don't want to make that mistake IMO.
>
> Good Luck,.
>
> Roy
OK, that sounds reasonable. Just curious, what did you use in yours that was too much? I used a .510/.520 lift and 308 duration and it was way too much for a stock torque converter on a TH350. Rough idle too, no bottom end but screamed at higher rpms.
I got some micrometers from a friend last night, going to start measuring things tonight, ordering crank and cam probably tomorrow.
Thanks for all the info! Kerry