I'd kinda like to know what a stock bottom end L98's are doing with aftermarket heads, cam, intake, and exhaust. What heads, cam specs, etc...

Thanks!

 

Oh ya, I did a search so don't freak out on me!

 

I'd like to know as well - so here's a bump to the top.

 

A lot of people could post an answer on here, but most won't answer unless you're a little more specific. If you're looking for what people on this board have achieved with the stock bottom, you'll see a few really impressive results and a lot of not so impressive results. Mainly because 80% of modders on this board have not yet gotten all of our "issues" ironed out with our bad *** aftermarket parts.

I know this is more philosophical than you're hoping for, but it's all I can offer. Everything you mentioned; heads, cam, and intake....is every part that makes the engine what it is.

All the bottom end is.......is 350 cubic inches of displacement.

Any combination of heads, cam, intake and headers are possible from mild to wild. Whether one decides to put aftermarket pieces on their factory short block, or build a new, bulletproof bottom end, a 350 bottom end is a 350 bottom end.


1) Does it have to pass emissions? HUGE FACTOR!

2) What intake?
-LTR TPI= Highest torque, lowest peak hp.
-SuperRam= 2nd place torque, 3rd place peak hp.
-MiniRam= Lowest torque, highest peak hp.
-Stealth Ram= 3rd place torque, 2nd place peak hp.

3) How streetable does it need to be? (Everyone's definition of streetable is different.)

If you can answer these 3 questions, we can point you to someone who is a shining example.

 

That wasn't the short and sweet answer your LS1 *** was looking for, was it. What's up, you going to race some thirdgens up there in Layton, on Hillfield Road? (I'm from Salt Lake and used to have an LS1)

BTW, are the times in your sig corrected, or did you actually run at sea level before moving up there? Ain't no way you're pulling a 13.1 at 110 at RMR without juice. Those dyno numbers are really good though. My C5 dynoed 311 hp and 348 tq at Phantom Mtrsports, with the exhaust cutout open and no cats.

And Redeye, how is it you have over 1200 posts and don't know the answer to this question? I've been on this board for a year and a half almost every day.

 

Besides, your topic question says with stock heads and cam, not stock bottom end, you may want to rephrase For a short and sweet answer I've run close to 350 hp with the stock engine (well stock being the correct part numbers, heads had the crap ported out of em and milled for a bit more compression, 1.6 rockers, intake ported the hell out of, chip tuned to the max, etc. but still the "stock" engine). Taking just the short block, i've hit 400 while still keeping it very streetable, 440 with making some compromises.

 

DAMMIT Rhuarc! Just as I was on the way to Cottonwood, (where I was born) to drop off my stock heads and slip you $500 fat ones for your insane metal shaving services! Life's a bitch I tell ya, guess I'll keep saving for AFR's.

 

Link in my sig, and there's a lot more ET left in it, if I can learn to launch properly.

 

Not true. My LS1 *** is under the impression that anythig over 400 RWHP on an L98 is living on borrowed time. ;D

I don't know if it would be possible to create enough power to break components in the bottom end with a powerful heads and cam combo. Therefore, I mentioned "stock bottom end."

Quote:

1) Does it have to pass emissions? HUGE FACTOR!

NOPE!
I dunno, it has to clear the hood of a corvette though. Prolly the super ram I 'spose.I want my mother-in-law to be able to get groceries in it. And I wanna go 13.5 at RMR. 12.5 on the juice.

And yes, my sig times are with a "little" squeeze! Never dyno'd it on the bottle though. Kinda works out to what it should of run at sea level huh.

 

Right but that's referring to longevity and the strength of the components. If that's what you were asking, then yes it's true that the L98 short block is weaker than the LS1. Plus we've all got higher miles on our engines, so of course they are living on borrowed time if we push 400 rwhp through them.

If you're willing to stay with long tube runner TPI, then I agree that Kevin91z's setup is about as good as any.

If you want more, Ralph is probably the setup you'd be looking to copy.

http://temp.corvetteforum.net/c4/bea...nSet-ups.shtml

That would most certainly accomplish your goal, while getting 24 mpg doing it. Just remember that he has slicks and skinnies to run that 11.6, so plan on a high 12 to low 13 up there on street tires, with the wonderful 2.1 60' times we are limited to at RMR's greasy track. Good luck!

 

That almost everyone runs a PI Vigalante torque converter, I have most of the mods they have and I am still a full second off
of their time. One other thing I have notice, everyone with a semi stock set up runs in the 1:70 to 80 60foot times.

 

Absolutely. Efficient torque converters with traction are the deal. If anyone can figure out how to reduce their 60' by .2, you get .5 in the quarter. Most people don't understand that, and they read that link and think they're going to be close to those times on street tires. Not a chance!

 

Never been called Redeye before

But if you'll notice Esams - I frequent the appearance and body boards much more than TPI. And since living with TPI - I've grown to not look at dyno numbers anymore. Most are a bit disappointing on the HP side. Ring a bell mr. stealth swap?

I personally really like Buckeyeroc's (spelling? ) setup with the Super-ram. Keeps the torque and goes the distance horsepower-wise.

That being said - I'll go back to admiring the look of my car ....and not its dyno numbers

 

ROTFLMAO Dude I am so sorry, that seriously was a mistake. I just glanced at your screen name and for some reason I thought it said 3.1RedeyeCandy. I know it looks intentional but I didn't even notice that until now.

BTW it's ok to bust my ***** about non impressive results. As long as I have the stock heads and cam in there, I might as well be the poster child for non impressive results.

 

Actually I'm not bustin your ***** at all. I think what you're doing is great for the thirdgen community - and that by saying you were tired of poor dyno numbers, I meant that you decided to switch because of it.

Keep up the good work, and don't pay attention to post count. It means nothing here.