THOSE resemble the comp cams oldsmobile lifters i switched to after having probs a while back.the oil band is higher than the sbc lifters companies will try to sell you when you ask for bbb lifters.i looked at it every which way possible when assembling the motor and they seem to be the best bet.over a year on the motor,20 1/4 passes at the track and 100 1/8 passes around town gd oil press valve lash holds adjustment.its a better location for the band and has the proper cup hight you sould be gd to go
What are your thoughts on the Speed Pro HT817R chevy high rev lifters?do these also bleed alot of oil?i dont think they make these lifters anymore. Thanks
Do NOT use Chevy lifters in a Buick . There is a slight size difference and you will loose oil pressure big time .
I got them in my motor,i just had to make up the different in pushrod length,got no oil pressure problems?? Thanks
Huh? I've got 20 years worth of chevy lifters in my BBBuicks. Diameter is still 0.842", or are you referring to some other size difference? We already know about the effect on pushrod lengths if they're used. The only other thing I've known to look for is the band placement on the lifter OD depending on how much lobe lift you're running. Devon
OK I am continuing my education on Buick lifters , I stand corrected . Some one please tell me about the push rod length change . We had some major oil pressure problems with chevy lifters but must have been something else causing problem .
The oil band around the Chevy lifters is typically lower than the Buick design, so if you're running a fairly radical cam it's a good idea to check that the oil band isn't being exposed when the lifter is riding the cam's base circle (often cams have the base circle reduced to achieve the high lobe lift). It's possible you were seeing this problem on your particular build if you had pressure problems. TA mentions that another thing to consider that's an advantage with the higher oil band on Buick lifters. At full lift the band is no longer exposed to the oil galley, which help avoid excess oil being pumped to the top end...something useful if you oil through the pushrods. I haven't checked this out yet since I don't oil through the pushrods currently, but will be switching over to hollow pushrods when the Gessler heads go on, so I'm going to compare lifters to see what's up per their advice. I don't remember the exact difference in pushrod cup depth between Chevy & Buick lifters, but it's not a big deal if you're running adjustable pushrods or custom length jobs. I wouldn't rely on adjustable rockers alone to make up the difference, unless there's been a fair amount of head and deck milling bringing the rocker pedestals closer to the cam centerline. Devon
If it's already running and pressure is fine, run it. If you haven't fired it yet it, might give you peace of mind to take a look. I haven't heard of any "rules of thumb" to follow, so checking is the only verification I know of so far. Devon
No she`s been running and pressure is fine but should i be worried that anything might get damaged due to lack of oil in certain areas? Thanks
If your pressure is good (11 psi per 1000 rpm) and the valvetrain is wet with oil under the valve covers, then all is as it should be. Devon
