stiggity99

Must i have the machine shop line bore my block, in order to use ARP Main studs. I found the correct kit, and it's made just for l98, with the 3 longer bolt to secure windage tray. Can i drop these in? or is there something that the machine shop must perform in order to use studs.
SOrry to make things so complicated. Any sort of input is much appreciated.

FostersPerformance

Changing the studs wont require any machine shop work.

C4industries

I second fostersperfomance on that. If you're having the cylinders bored and honed you should have the machine shop install the studs on the main caps during that operation. But you shouldn't see any change in the dimension of the main bores of the block. I've read others claim differently but my mains were fine.

I didn't realize ARP made a specific L98 stud kit with only 3 long studs. Will keep that in mind for my next build. It sounds like you're going to use the stock windage tray and pan. That's a good plan. I would not run without a windage tray. And some pan styles won't fit in the car. Stick with the stock setup if you can.

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yakmastermax

Got a part number?
ARP main stud kit that works with stock L98 pan and windage tray, but on a Vortec 880 roller block 383 build would be ideal for me!

stiggity99

ARP Main Stud Kits 134-5502

If someone see's something different, or points out they won't be compatible.. please lmk..

stiggity99

Yakmastermax:
If i had the fundage, a super nice build could have manifested.. but, in the long run... my ECU can only flow so much fuel, idle/wot.. I do have a question. I purchased SUMMIT 8802 camshaft, and a new set of lifters.. How much should I bump my fuel pressure up to? is 43.5PSI at idle correct? Also, if I bump fuel pressure a smidgin, and I'm running the SUM 8802 camshaft, would I need to advance, or retard timing.
Also, how important is Degreeing the cam? I mean it cud save me a possible ~4 degrees...??? My timing chain has 1 slot on crank sprocket, and dowel pin amenity, w 3 bolts (Cannot adjust overlap, timing will be straight up.) on cam. Will degeeing _AID_ in any way? I've never done it. But I've watched number videos.. I don't have a dial indicator neither.. AND!!! I'm hoping that ARP Kit for main studs is compatble..

C4industries

That looks correct. The kit has 7 short studs and 3 long ones. That's what you need for an L98 with the factory windage tray.

stiggity99

>>That looks correct.

Sweet!!! I actually called Summit, spoke with one of there techs, and he was about to sell me a kit for large/small journal main studs. But!! first off, they were $150, and lastly they wudnt have fit. After reading, and searching, I'm not certain _how_ I tracked that kit down, but it looked alright with me!! and!! I'm feel a lot better with your confirmation, also..
it was like $90 after shipping & taxes, but well worth it. That may be an "odd-ball" kit, But im sure someone else in the community, or somebody simply reading this, may stumble upon them. COOL!!!

bjankuski

I am skeptical on not line honing the block after you install studs. The fine thread studs will put more clamping load on the main caps, may change the bore diameter. I know whenever I add studs I hone the main bearing bores.

I guess you could check it before and after and see what the change is if any.

yakmastermax

Stiggity,

I honestly am not knowledgeable or experienced enough to answer your question, but I am a big believer in actually getting cars tuned when they are modified!

So much of factory ECU tuning is about prioritizing fuel economy and engine longevity that their optimization in terms of power is often lacking greatly!


That kit looks solid, but it isn't a bolt in (screw in lol) upgrade?

stiggity99

Yakmastermax:
I'm not a stranger to tuning. Except I was tuning a 2liter (4g63) turbo AWD Mitsubishi Eclipse, and not an '89 Automatic Corvette. Trust me, if i don't buy the 100% stand-a-lone for this car (I recall seeing an ecu/cable/disc for sale on one of the vendors website. I'll put A heavy list into an PROM tune. And if that is anything similar to the EMS I was working with... the support is there. Forced Performance Red, 1120cc e85 injectors, 9:1 Wiseco pistons, on scat rods, BC cams....the only thing left stock was the intake manifold..
if those valves stay open longer, and taller, you got to fill them with fuel.. I got a set of (8) brand new fuel injectors (22lb) and an adjustable fuel pressure regulator, gauge. We'll see...