368...should I, could I, would I

[Hib Halverson]

Originally Posted by Pete

(snip)
Because someone disagrees with you does this mean they have an attitude.

Re-read the post. You'll note I never disagreed, but I did ask some questions and stated I felt you have an "attitude".

If you think you won't like the answers i suggest don't post questions on a puplic forum.

It is unnecessary to lecture me about public forums on web, I've been around them a long time. Folks need to try harder if they're expecting that I..."won't like answers."

Question right back at ya, has any other tuner done durability tests?

Silly question and you know it.
It's possible operations like Katech or LPE may have done some sort of "durability" testing on their engine packages but the rest of the "tuners" either lack the resources, the time, the money or the smarts to durability test aftermarket engine enhancement packages.

Well if five 1000 mile trips,racing her hard,driving in Chicago traffic is not good testing,what is?

I never said 5000 road miles and several dozen drag strip passes was "...not good testing." What I asked you was if your road miles and drag racing were...

Originally Posted by Hib Halverson

"...demonstrative of good durability and oil control superior to that of "20-year old stuff"?

Originally Posted by Pete

I will need documents from GM on the durability of the 368.

Sheesh you're a smart-***.
Obviously, GM never ran a 368 for durability as it was not production...although it should have been as the four-oh bore would have unshrouded the valves offering a useful power gain out of proportion to the 18 cuin increase in displacement. We owe the 3.9 bore to some GM executives' moronic insistence that the bore centers on the LT5 be 4.440-in. Had Lotus done what they wanted and used a 4-in. bore and a larger distance between bore CLs, the first gen. (two-bolt) engine would have come in at 400-horses and ZF wouldn't have had to make a special version of the S6-40 for ZR-1s, but, I digress...

I suspect that given stock or RB cams and a reasonable rev limit, a properly assembled 368 is going to approach the durability of a stock 350. It's possible the only place it might get weak is oil use after very high mileage, say over 125,000-mi. I say that only because my belief is the steel liners' walls might not be quite as durable as the nikasil-plated aluminum liners in stockers.

Jerry tested his head gaskets did he spend millions and thousands of hours...

unlikely

... i don't know,i was satisfied with his testing and i'm using his head gaskets will they hold up 200k miles.

Jerry Downey sells mighty fine head gaskets. I suspect they'll last "forever" as long as they're not abused. But, your comparison is weak. To get head gaskets with outstanding durability for modified engines ain't rocket science. You go to a high-end head gasket maker like Cometic or SCE, and have them make some killer MLS piece for the LT5. No problem as long as you have the money. Durability testing a highly-modified engine is another story all together.

Man if you use 1 qrt every 8k miles that is one killer motor i would not touch the short block,there i go again disagreeing with you.lol

The engine was assembled by one of those guys who does 20-year old stuff.

LS7 pushrods been around since caveman.:

Actually DOHC engines predate pushrod engines by about five years. Both showed up long after cavemen but pushrod engines are a more contemporary development.

And now, some more questions...
It was said earlier that a 380 is only about $300 more expensive than doing a 368.
Ok.
How does one get the additional 12 cid to 380 and how much additional torque does that get me?

Lastly...ya know, I just noticed all these flag waving smilies.

Indeed I am!!