Along with everything you have done to get some help with the rules, don't forget to SANDBAG. And if all that fails, it seems like some have had good luck using adolescent behavior to get what they want. In NMCA NA the sr20 is legal and is used and one is near the front of the pack.

I AGREE!

When I saw the pic of the Indy vs Predator heads side by side, the first thought that came to mind was: That's a good comparison between 1980 and 2000 cylinder head technology.

Then I remembered this is a Mopar site and had to correct my thought: That's a good comparison between 1990 and 2010 cylinder head technology.

Trying to discuss rules with NMCA is an exercise in futility. Tell me again why a 4150 billet carb body of correct dimension isn't legal in an Index class? According to them "it has a distinct advantage over a casting" In fact its the ONLY part made from billet that is illegal in the class. However Methanol is legal. I shake my head.
Doug

Yes agree, noone is discounting that it's 'old' technology. DRCE was designed before that but it's still going strong. It's basically about all I'm willing to afford and if it breaks, well let's not wish that on me. I just plan on having fun and if I'm lucky, I'll go a round. And a few of these guys I am friends with anyway. If you read my old stuff when i first got this jalopy going there was a concern I'd not feel comfortable at speed but, after the first hit I felt like i wanted some more. This has so far all come together since that time pretty smooth.

Yeah some of us rallied for you. It is disappointing and I've aired my reasoning, mainly being every part of your car LOOKS more era correct than about 90% of what's in your class.

Kidding around about "old tech" simply because that's what ya' hear about the Mopar world anyway. He11, I've built my last two combinations using two out of three of what seem to be the most hated BBM heads around, MP Stage VIs and Edelbrock Victors. If I ever try a set of Bulldogs, I could probably claim the trifecta. (Hot chocolate, actually, cuz it's cold outside)

No offense, i know what you meant and the way I think, performance is relative to the parts used and I respect/appreciate peoples refinements and their abilities to get above average results.

If you want to go fast get a HEMI !

Do YOU want to race a wedge

I don't think they would nessacarily run bad on a smaller engine than 600CID... it just might not run to it's max potential. Sort of like how I have heads that flow 340 CFM on a 410 horse 392, yes I could easily bump it up to 440 CID a couple more points of compression a huge cam and make 700 HP but it runs just fine on a lesser engine. I really don't think my engine will run any better with a 200 CFM head even though that's all you need to make 410HP.

Al Aquire had a very good running 605 that I got to run 4.65 after 2 passes and a high dollar lifter decided it didn't want to play anymore. Hardcore B you should ask him if he has that camshaft. It is a known good combo. Thats me being the crew [censored]. I honestly think it would of went a .60 or even in the .50's after a couple more passes. We were definetly going the right direction Birdtracker
https://www.youtube.com/watch?v=mMfMNxHvDp0

Adding to that thought:

Hey Bird! That's neat you got to help Al! I think he said Muncie was one of his favorite tracks? Thanks for the video link too, I opened it and saw there were quite a few more racing videos and before you know it, I had forgotten why I was there. lol If my stuff runs good it is not because it's just me, I recognize it is an accumulation of inputs from so many people in this community. Al has been right there helping steer me.

So, this morning I thought the cross-section calc's were off and I'm redoing those and about to log-in so i can enter my error and I see 440Jim sent me a pm telling me the calc's are off. Honestly what a gentleman, I appreciate that you didn't point out my error publicly lol. But, I really don't mind if anyone points out a mistake constructively. With that said the Pred IS BIGGER than the MW 440-1 duh. I'll post better numbers when i have more confidence in my area chart inputs. Anyone that gets the chance, launch that link video Birdtracker posted for Alguires Predator Avenger. Car run goo

Hardcore B : that pass was a 1.00 with a 1 sixty foot. I was actually going for a .999 sixty foot. Like I said that car was making some steam, Al will tell you its an old nitrous cam but it worked N/A. Muncie is a really good track and I can say I have been a regular there since 1985. Its not Norwalk but its a really good small track. Birdtracker

HardcoreB, do a good build thread (update as you go) once you get the ball rolling.

Lots of good info here and I’m sure more to come. I agree with John, good build thread would be very interesting.

Randy

I made some simplifications/assumptions, but this is my approximation of the Predator intake opening cross-section.
I could be wrong.... But if somebody else calculates something close, I will go with it.

For comparison, my B1 original heads were ported by somebody to 2.74 x 1.755 with maybe 0.50 radius corners.
And I came up with 4.59 sqin. A standard Koffel's gasket is 2.66 x 1.60 or about 4.04 sqin accounting for corners.

Jim : thats some good math. I should of bought that engine off Al but I knew my 2 car garage chassis would not of held up to that much hp. It was a good combo. Birdtracker