mariofromnewyork

Does anyone know what lash cap if any needs to be run on this cam?

Katech LPE GT35 38% fuel lobe

TIA>

http://store.katechengines.com/lpe-g...haft-p530.aspx

FYREANT

that depends on what you are using for the fuel pump. stock LT4? upgraded Lingenfelter? etc. Your best bet is to properly measure the clearance to know which on you need.

Katech_Zach

No lash cap.

mariofromnewyork

Thanks for the Response!

This is going in a 2017 Zl1, stock fuel system.

BooSSted

As stated, no lash cap. Not worth the risk.

FYREANT

What "risk"? The only risk from a lash cap is when they are installed incorrectly..

Corvette4ever

with both LT1 and LT4 HPFPs? This is the first 38% fuel lobe cam I see not requiring lash cap

Corvette4ever

IMO that's the main risk. I don't trust that all shops will take the necessary measures like how you did

robert miller

Ant I would think is crazy on his reading each step on what he is doing to make sure it is correct. Most shops it is a hit and a miss on stuff.

FYREANT

Fair enough and good point.. lol

Robert.. you're not calling me OCD are you? If you were, I'd have to correct you - its CDO (the letters HAVE to be in alphabetical order!) LOL

Katech_Zach

Yes. We run the 38% fuel lobe in our LT1 427 with the OEM LT1 DI pump. We also use the 38% fuel lobe in our Stage 3 LT4 with the OEM LT4 DI pump.

Higgs Boson

This says you run the 38% lobe but it doesn't say you run it without a lash cap. I realize you said in a previous post "No lash cap" but since the question was to confirm "no lash cap" your recent post does not.

I am only asking you to be very specific because I like the LPE GT35 cam specs but will not run a lash cap.

Katech_Zach

Both applications I was referring to in post #11 do not use a lash cap.

robert miller

OK then are you saying all 38% cams DO NOT need a lash cap at all due to being are having a larger cam lobe if that is it. Again you just mean from your two motors here using the 38% cam both did not need the lash cap.

Again do you mean both WE did the measurement on the cam & both were good without a lash cap.

Corvette4ever

Interesting. What could be this cam's secret not requiring a lash cap like other 38% fuel lobe cams?

Besides, excuse my ignorance, but what is the point from offering this cam with both 14% and 38% fuel lobe?

FYREANT

You can't make the lobe bigger as it wouldn't fit through the bearings/journals. You actually make the lobe -smaller- to overdrive the HPFP. 38% would be slightly smaller than a 32%. However, while all cams that have a smaller fuel lobe will likely function without a lash cap, that is NOT the correct way to install them as then you do not preload the pump properly.

The only way to overdrive a the HPFP with a cam lobe WITHOUT requiring a lash cap is by maintaining factory base of circle and increasing the size of the lobe, which we cannot do, or by increasing the number of excentrics on the lobe from 3 to 4 or 3 to 5. Basically going from a triangle lobe to a square lobe or pentagon shaped lobe.

Ant

robert miller

No buddy not at all but the box with the drawing of the cover then the bolts at is in every hole that they came out of

That is a good thing anyway shows me how you do work on stuff. Good thing. Robert

Corvette4ever

so what will happen in this case? Would we NOT get any extra fuel benefit from 38% lobe?
Cams with added fuel lobe are priced similar to cams with stock fuel lobe. One would think, why not get the one with the added fuel lobe just for the heck of it even if we don't get the full benefit of the added fuel lobe

Jaycajun

Called BTR about a LT4 cam with a 38% fuel lobe and was told it doesn't require a lash cap. I asked how the proper preload could be made without one. Response, after a long pause, "It doesn't require a lash cap". It would be nice is a camshaft company could explain how it's not required because it doesn't make sense....

FYREANT

Basically, yes. If you don't have proper preload on the pump and a proper lash cap you woild get less gain from it. So if you have a 32% lobe, LT4 HPFP, and no lash cap, you may not 32 the advertised 32% from the cam. You may only get 20% or whatever it works out to being.

Haha thats great... "uhhhh yeeeeeaaaaa.... it'll be fine..." LOL