Decided to go roller

1wild&crazyguy said
about 10-20hp over a similar lift flat tappet cam.

so did you go solid or hyd?

I went hydraulic.

340sFastback said
Hydraulic rollers tend to be taller then flat tappet and that changes the push rod geometry requiring push rod holes in the head to be clearanced.

I would put the cam/lifters in the engine, run the oil pump with a drill, and rotate engine by hand to make sure lifter oil grooves are not exposed at max lift.

yeah....what lilcuda said.

I talked with Tim at Hughes and he said it was not necessary with their lifters since the oil groove is not exposed. I need to measure for push rods so they supply an adjustable lifter tool and pushrod for that.

lilcuda said
The Hughes retro-fit hyd roller lifters are specifically designed to address the problem of the oil grooves being exposed at max lift. You can read about it here:

http://www.hughesengines.com/Index/products.php?partid=26114

Dave,

Congrats on making the leap to hyd roller! I want to do this eventually also, but have many other things that need doing on my car before I tear into the engine again.

Yeah I'm psyched about doing the swap. I'll be much happier (after the sticker shock resides) in the long term and I consider it well worth it when considering wiping out a flat tappet cam lobe. Not a big deal to prevent but much more vigilance needed with the flat tappets. I like plug-n-play :cheers: