Indy heads on smallblock and big solid roller cam, was liftes?
Our lifters are the best, hands down. You wont find a higher quality lifter or ones that oil the rollers for the price. I have built many engines with these lifters with way more spring pressures with no issues. The only way to get a better lifter is to go with a Jesel.
Our SBM Pro Plus with offset intake pushrod seats will be coming out in about 8 weeks.