Mike Holmen

Here a thread for all you autocrossers and want to run the 376/525HP engine.

https://ls1tech.com/forums/generatio...te-engine.html

This one is for you aklim buddy.

1985 Corvette

Holy crap. Low psi, "just at idle"? No way. Park it and figure out the problem. Oil temps approaching 300 degrees...I'm no expert by any means and that was painful to read, even for me.

aklim

That kinda bites for him. Wonder if he ever got warranty replacement.

Mike Holmen

Just shows you that how important that you have a decent sized oil cooler and dry sump, if you want to autocross.

That engine tossed a rod, started with a spun bearing. No sure if you guys noticed how thin the cylinder walls are on the LS3 engines.

As for warranty, I would say no way as first off its a race engine, in a race car but depends on the dealership more than anything.

Typically street LQ9 6.0 N/A engines are around the 450-475RWHP area with a few decent upgrades heads, intake and camshaft.

Tom400CFI

No, man....no. You definitely do not need an oil cooler for autocross. Do you realize that most autocross courses are ~30-60 seconds? Then you get back in line and sit.

You don't need dry sump either. A decent pan with a decent amount of oil is sufficient.

I know this b/c I've been autox'ing for decades. I've done it in f-bods (all with stock pans and no coolers), a VW Scirroco, a C6, and my current C4. None of those cars had a dry sump and only 2 had an oil cooler (the Vdub and the C6).


.

Mike Holmen

Wow never have, I wish I could. Up here, I would have to drive forever to find a track to find a decent road/autocross track. We still have a foot of snow on the ground right now. It would only be a store parking lot if there was an event, so there would be almost no speed.

I would guess that low oil pressure and a hot engine would have caused the engine to grenade.

My 85 LQ9 doesn't have an oil cooler, the engine hasn't even got that hot yet. I check mine with a temp gun fairly often, as most of the LS engine use external oil coolers.

Jaye Bass

I'm about to start (well the mechanic/machine shop is about to start) an LT1 383 build. I plan to put in a baffled pan but that is about it for now. Will AutoX it when it's finished (the entire build) in a couple of months.

aklim

IDK. Seen a few L98s do it but they were mostly stock or modified. None in race class when I was doing it.

It might look thin but depending on the engineering and materials, it might or might not matter.

I thought that years ago LPE gave a 3 year warranty. Not sure what you have to do to qualify for it.

Which is the beauty of it all. Do those updates and have someone tune it or do repairs without hearing that they either don't work on that old a car much or refer you to their "specialist", aka guy who drew the short straw.

Tom400CFI

That's pretty much where most autocross events are held; a parking lot. Around here, they're at venues that have bigger lots, like sports centers etc. They used to do a few a year at the Pocatello ID air port and that was a big fast course (for autoX). I hit 80 mpg on that course, in my 83 Trans Am.


I'm surprised that you don't have this option in your area.

Mike Holmen

We used to have a track, but no one wants one in there area. Just turns into a fight with the land owners. Most don't want the noise or increase in traffic near their land. I tell those people don't come to town, cause I don't want their noise and/or traffic.

Its really sad, as there was a decent road/drag track planned about 20 mins from my house. Had dirt berms and noise suppression panelling built into the track.

http://rockymotorsports.com/track/

Tom400CFI

That's a bummer, for sure. But for Auto x....you only need a big 'ol parking lot that's vacant on Sundays, owned by someone who's willing to make some dough on a day that they're closed.

aklim

Have you looked at SCCA for clubs that rent a vacant parking lot for a day or two a year? Eons ago I was part of one such chapter and they rented the university parking lot, one of the larger ones for the day. Had a couple guys sitting in the bed of the trunk and dragged around drywall boards to mark the course. Following up with cones. Once in a while they had a venue at a real track. Might be closer than you think

VikingTrad3r

Mike Holmen

That would be an awesome day. My 2.73 gears wouldn't probably limit me to first/second gear. I really have to find some better gears.

I'm getting close to get my car back onto the road. Even though I haven't really done much this winter to my car, mostly due to money. I really wanted to put a cam into the LQ9. I'm hoping that the C6 Z51 front/rear brakes have been worth the effort. I made my own caliper brackets.

I'm still waiting on my suspension parts that I purchased in January to arrive.