how many have tried them so far.good or bad

Second that, as I need new lifters this winter. Are they working well for anyone?

Call tracy at sunset and let a professional give his opinion on lifters.

I put them in my Big Chief this year, so far so good but still to new to give you a accurate answer.

There was problems in the beginning but here they got them fixed..."big speed" on ST is an engine builder here in N.J. uses them and has some out there with over 250 runs on them..I also know that Frank Mark has them in his dragster and as far as I know he has had good luck with them...

1048 passes, few street miles on Crower Severe duty with HIPPO

around 700 miles and 30 passes on mine,using brad penn oil btw.

they are just like new!

548" pump gas,9.63 at 141,with a 4 speed, no trailer

We run an SB2.2, and these things seem to be hard on lifters due to cam profiles, rocker ratios and spring pressures.

We changed from Crower to the Isky Red Zone with the EZ roll option.

We are to the end of the second season, and there are no indications that there is any wear. They will be going back for rebuild this winter.

Valve adjustments remain rock solid.

Lifters have been out and checked, and we have no movement in the wheels, and no gritty feeling when rolling the wheels dry.

We run Valvoline SynPower Synthetic oil, 5W20 or 10W30, with Zinc Additive.

We also run a Peterson 5 stage dry sump, bypassed at around 94 psi, with no restrictors.