[EDFHOBBIES]

Originally Posted by DorkMissile

last year in my winter build, I put on my s/c, LT4 HPFP, LT4 injectors, but installed the pump on the LT1 with just one factory gasket. No lash cap.

On long pulls, I can see my rail pressure will drop and injector cycle will open up some, so both me and my tuner agree I am probably out of HP Fuel Pressure. Now I do run meth on top of everything so I am still feeding it, but would like to try and feed it more E85 if I can. And FYI - my car is a 1LE so it has the larger flow low side pump, but it is just about out of flow also.

I am trying to avoid doing a cam swap, so thus far the plan this winter is a DSX aux fuel pump on the low side, and then I was planning to check my LT4 HPFP stroke. I am not trying to get a ton more flow, just maybe 10%.

That being said - has anyone run a lash cap on the LT1 cam with the LT4 HPFP? I know some have bottomed the pumps out / broken the bolts using the .080" shims, but has anyone gone thru the process to 100% utilize the LT4 pump?

I have read the article on the CorvetteForums, but it shows little on what configurations work?

I would ask MTI performance in Houston I know they messed with lash caps for ages they might be nice enough to help!