Pushrod length new Comp Hydraulic rollers?
 

Helping a buddy put together a 455 with #614s (yes a big dish piston). He has the new Comp "cartridge" HRs . Was wondering if anyt of you all have used them and what ballpark pushrod length you are using to get us close during mock up. I have multiple length adjust pushrods to check with and light springs.

My engine with the SM heads and those lifters are on the stand,might have numbers for you next week.Tom

Thanks Tom.

Are these the ones with the real narrow part in the middle?

It’s replaceable cartridge.Tom

We ended up 8.750 on both. even though what ever exhaust valves the machinist put in were about 0.100 longer then the stock RAIV tuliped valves

That's about exactly what I ended up with a set of Johnsons.