[Stan Weiss]

Originally Posted by scott foxwell

Cool stuff. Wonder how many really know what it takes to get a head to this stage. Kudos...that's a lot of work. Wish I had a chance to see it at PRI. Too much ground to cover and not enough time. Good luck with the project.

Hey Scott,
Welcome.

Stan

[ventura7211]

Originally Posted by ponjohn

There is a lot of talk about how this head is designed for NOS.

Would this design also favor a boosted application?
OR is that a completely different set of parameters?

Sure it could be made to work. I can't tell how these heads were softened, some are smooth transitions that can only be noticed with a straight edge, others I've seen look like stair steps in the chamber, same type heads from different shops.

I know of a 481x that is being converted to nitrous use, they are being told it won't work, guess we will see next season.

Originally Posted by BruceWilkie

The SCJ, P51 and Boss9 Ford heads can make alot of power... each more than the other respectively but they arent in same league as the pro-stock heads are they? It even reflects in the cost. Ford gang choses what meets there needs and run it. Not very much politics or back-stabbin over cylinder heads like seen here for sure.

Originally Posted by BruceWilkie

Just like a ported SCJ or P51 Ford or Boss9 is not in same league as the pro-stock Ford heads. CV1 was never intended to be.

What exactly are you calling a ford "pro-stock" head? The E460 junk or the hemi/DRCE knock off junk that only a couple people have attempted to run?

I know of a boss9 headed engine using an ancient AR block like I have that has been faster than any of the pro stock junk in an old chassis with an old f3. The heads and block are '80s tech, the procharger early '00s, runs in the bottom 4s 1/8th mile.

C460s have valve train problems and need the chambers softened for nitrous use, the "replacement" head has a tendency for the seats to fall out of them. A460s have been just as fast as any C460 headed motor.

One of the best choices available would be the current Blue Thunder Thors, if you have the 10k for pair.

[cptinjak]

Originally Posted by ventura7211

One of the best choices available would be the current Blue Thunder Thors, if you have the 10k for pair.

We have a new 4.900" billet that we brought to PRI also. Most people were too busy looking at the Pontiac though... haha

Jack

[ventura7211]

Originally Posted by cptinjak

We have a new 4.900" billet that we brought to PRI also. Most people were too busy looking at the Pontiac though... haha

Jack

LOL. Are they the same ones listed on the site? What would the closest cast head be to them? A, C, Thor?

[LiL Jack]

I made a mistake in an earlier post. This head does not have the 4 extra head bolts.
It is possible to do this with the billet head but did not get it on my set.

And there was another set sold for an NA application at PRI also.

Tony Biscoff saw the head at PRI and he liked it a lot also.

Visner said the Pontiac head was a big hit at PRI. And could tell the Pontiac community was a tight group and a lot of people new each other.

Pontiac Power!

[Stan Weiss]

OK, so it has gone from a mini 481X back to a Pontiac. F3 or nitrous the only thing that counts is the total HP that is made. I clearly believe it can make the HP to run those numbers. You can set the bar wherever you what it's your engine and car.

Stan

[johnta1]

Stan, no one has told them that Pontiac HP is the same as any other brand HP.

Power adder HP is the same as NA HP.
NOS HP is the same as Blower HP.

It's all in how you make the HP that tells the story.



PS: In the ET of the car, it only shows what HP it used to make that ET, not the total HP of the engine.

[Jeff Kinsler]

Stan and John what should Brand X's twin turbo car run in the quarter??

[johnta1]

What is his HP and weight?

[johnta1]

OK, from another thread:

Nos??? That's prehistoric **** lol. No nos!

Made a hit today at track rental......

1.20
3.25

Then catch cans overfilled and started moving around so I lifted. Coasted thru to a 4.97 at 140.....leaving at 7 lbs and ramping to 24 lbs at 1.3 second. Shifted at 7100. Creeping up on it. This thing is an animal. No bars....10.5w tires.

His 60' and 330' are sucky, his 'coasting' 4.97 and 140 MPH shows a LOT of potential.

Just from them possibly 7.6x - 7.7x seconds in 1/4?
On a track probably better with get traction full length.

[Travis Q]

Originally Posted by johnta1

What is his HP and weight?

If you want a rough number, just take Rod's 6.27@228, which was run at 2760 lb, and then change the weight to 3500 lb.

Jack's car is going to FLY. He has eliminated one of the big roadblocks that have plagued nitrous powered Pontiacs. I fully expect the car to run mid-low 7s when sorted out. More power to him!

[mike leech]

Originally Posted by johnta1

Stan, no one has told them that Pontiac HP is the same as any other brand HP.

Power adder HP is the same as NA HP.
NOS HP is the same as Blower HP.

It's all in how you make the HP that tells the story.



PS: In the ET of the car, it only shows what HP it used to make that ET, not the total HP of the engine.

Quoted for the ridiculous ignorant post it is. While hp is hp may be true. make 800hp that peaks at 6500 rpm and compare it to 800 hp that peaks at 9500rpm and compare them in the same car both na with no other changes. Let us know how it works out....

I truly think you know better than this. you just really want jack to lose or be wrong. You may get to see him struggle for a bit with a new combo. for a while. but he will figure it out. If he hits it outa the park right outta the gate are you gonna need counseling?

[johnta1]

Quoted for the ridiculous ignorant post it is. While hp is hp may be true. make 800hp that peaks at 6500 rpm and compare it to 800 hp that peaks at 9500rpm and compare them in the same car both na with no other changes. Let us know how it works out....

I truly think you know better than this. you just really want jack to lose or be wrong. You may get to see him struggle for a bit with a new combo. for a while. but he will figure it out. If he hits it outa the park right outta the gate are you gonna need counseling?

What are you drinking?

[Stan Weiss]

Originally Posted by mike leech

Quoted for the ridiculous ignorant post it is. While hp is hp may be true. make 800hp that peaks at 6500 rpm and compare it to 800 hp that peaks at 9500rpm and compare them in the same car both na with no other changes. Let us know how it works out....

I truly think you know better than this. you just really want jack to lose or be wrong. You may get to see him struggle for a bit with a new combo. for a while. but he will figure it out. If he hits it outa the park right outta the gate are you gonna need counseling?

Mike,
Can you please explain your physics to me.

Mine goes like this.

800 HP @ 6500 = 646.4 torque

800 HP @ 9500 = 442.2736842105263 torque

What is important is what we can delivery to wheel to accelerate the car.

9500 / 6500 = 1.461538461538461

1.461538461538461 * 442.2736842105263 = 646.3999999999997

So at 6500 axle RPM they both produce torque of 646.4

Now if you want to talk about 2 engines producing the same torque but at different RPM you are on to something.

Stan

[mike leech]

Originally Posted by Stan Weiss

Mike,
Can you please explain your physics to me.

Mine goes like this.

800 HP @ 6500 = 646.4 torque

800 HP @ 9500 = 442.2736842105263 torque

What is important is what we can delivery to wheel to accelerate the car.

9500 / 6500 = 1.461538461538461

1.461538461538461 * 442.2736842105263 = 646.3999999999997

So at 6500 axle RPM they both produce torque of 646.4

Now if you want to talk about 2 engines producing the same torque but at different RPM you are on to something.

Stan

Quoted for (I'm trying to be nice)Ignorance. Any person that portrays themselves as smart as you do, KNOWS the point of my post. In the real world the car that peaks higher has 2 advantages 1,higher average power 2,more power "events". It will go faster in a "REAL" car unless the person running it is a dolt.
The problem with calculator racing is you can manipulate the inputs to try and make your point or outcome whatever you want. The parameters were engine rpm not torque at the tire at axle rpm. Using your "brilliant" calculations why would they not have the same torque at 9500 axle rpm? They will NOT perform the same and if you and john think so...get a room at the CV1 notel, where fantasies abound and everyone hates Jack and believes whatever they like is true.

[Stan Weiss]

Jeff,
I know nothing about Brandx's car or engine. So I have no bases at all to work from. Lets start with what size is his engine, how much boost is he running and what does his car weigh?

My WAG! Post on the numbers posted by John.

Using the 3.25 330 foot as the base

60 Foot ET = 1.2195
330 Foot ET = 3.2506
1/8 Mile ET = 4.9363
1/8 Mile MPH = 145.9761
1000 Foot ET = 6.3928
1/4 Mile ET = 7.6246
1/4 Mile MPH = 183.8198

Using the 1.20 60 foot as the base

60 Foot ET = 1.2017
330 Foot ET = 3.2169
1/8 Mile ET = 4.8907
1/8 Mile MPH = 147.0351
1000 Foot ET = 6.3367
1/4 Mile ET = 7.5593
1/4 Mile MPH = 185.1865

Stan

[David Holmberg]

Aaron, on Ben's Malibu we're running two 10lb bottles and change them after 2 passes, but there is enough left for another pass. Jack can run two 20lb bottles, if needed.

Besides, if Jack wins the first two there is no need for a third.

Like I said its a pick. Either car has the chance to beat the other on any given day. IMHO

[Aaron Quinton]

3 out of 5?

Originally Posted by David Holmberg

Aaron, on Ben's Malibu we're running two 10lb bottles and change them after 2 passes, but there is enough left for another pass. Jack can run two 20lb bottles, if needed.

Besides, if Jack wins the first two there is no need for a third.

Like I said its a pick. Either car has the chance to beat the other on any given day. IMHO

[Stan Weiss]

Mike,
What NHRA Pro Stock has done is shift the torque curve to a higher RPM. With all of your knowledge I am sure you understand what that does.

Stan

Ps- Keep the BS coming it has been a bad day and I need the comic relief.

[LiL Jack]

Originally Posted by Stan Weiss

Mike,
What NHRA Pro Stock has done is shift the torque curve to a higher RPM. With all of your knowledge I am sure you understand what that does.

Stan

Ps- Keep the BS coming it has been a bad day and I need the comic relief.

CV1TTFMF

That one makes me laugh when people post that one!