Pontiac - Race The next Level

          
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Old 11-24-2005, 12:37 PM
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Hey Fellas...

Sorry about the lack of response to some of your questions....regarding the bump steer question with the rack and pinion steering the answer is I do not know since I have not driven the car yet and since it is a pure track car only I doubt I will ever be able to answer that question....I plan to spin the engine up to about 8000 rpm and that will be about it even though it will rev higher the heads start to drop off at about 7500 rpm. It is using a regular oiling system not a front and back setup....Expect to run 10 to 15lbs of boost to get in the low eights... the heads flow at 28 inches 370 intake and 260 exhaust ...Marty Warden of Monroe NC ported, flowed, drydecked and built the heads.

The whole design of this engine was conceptualized by Tom Vaught after I spoke with him about 3 years ago regarding my ideas on running a supercharged Trans Am...He was instrumental in supplying his knowledge and time with design of certain parts including but not limited to pulley setup, cam design, vortech blower and many other parts....not to mention giving valued opinions regarding my ideas on type of heads etc etc...

The Chassis setup was done by Teddy Houser Race cars in Lincolnton NC....Teddy is a magician with small tire class race cars...he not only prepared the chassis and cage, he fabbed the headers, sheet metal rear end, brackets for the blower, front and mid plates, blower tubing to the intercooler, alternator running off the rear axle, etc etc for an extremely fair price....

Ken Simpson of Simpson's Injuns in Monroe NC will be doing final assembly and breaking her in....The most meticulous fella I have ever met....and a great guy to boot...

Hope the damn thing runs....LOL
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  #2  
Old 11-24-2005, 12:50 PM
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JBP prepared the short block....David was very helpful and a pleasure to deal with and Rodney personally prepared the block....
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  #3  
Old 11-24-2005, 02:04 PM
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All I can say is WOW!

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Old 11-24-2005, 02:18 PM
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who did the cutoff on the exhaust ports and have they been "run" since done done?Tom

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Old 11-24-2005, 02:34 PM
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Wow, nice work.

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Old 11-24-2005, 03:02 PM
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I was about to ask about the exhaust ports.

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Old 11-24-2005, 03:03 PM
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Tom:

CJ Batten did the cutoffs back in the early 70's ....Bill Foder ran the car through out the 70's with the modified heads....When I got em they flowed about 212 at 28 inches on the exhaust....pretty pathetic huh....

  #8  
Old 11-24-2005, 03:38 PM
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was that with or without a tube?Lots of people bash the turn down exhaust of a pontiac.If you "look" at virtually all street cars they will have a turn down exhaust,either in the head or in the header-exhaust manifolds.My lightly done street V heads were 228 and I believe my 303 heads are in the 260s.I have a NOS set that we are going for a full race deal so will see what we endup with.Tom

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Old 11-24-2005, 05:20 PM
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That looks like it's gonna be fun!! Nice work so far!!

A list of questions........

Who built the intake and are the injectors at a 45 degree angle to the port?? I would guess that pointing the injectors down the intake port path would be a better idea similar to LS1 technology.

Not to sound offensive.... but why the RAV? Is it just an nastalgia thing? Because it seems like the new Tiger heads would out perform those easily.

I would assume you have a HUGE water/ice to air intercooler in the car??

Why the rear axle driven alternator? Thats mostly a roundy round deal for cars that see alot of road time. Having seen Duttweiler build alot of this kind of stuff, they usually opt for one of those tiny Mitsubishi Alternators. Similar to the ones used on the RX-7's/8's. If you're going to be using a electronic fuel injection system and anything other than a mag, you're going to need an alternator on the motor. Make for better performance from the electronics/electrical system, plus makes for a better cycle to ground when things are operating.

Lastly.. Is that the Vortec mondo?? Looks like it.

Congratulations on the very nice ride. I love seeing cars like this because they are different, and you can tell you've spent alot of blood, time and sweat on this one.

  #10  
Old 11-24-2005, 07:24 PM
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This is the original picture of this motor. We ran it in our 69 TA in modified production NHRA in 1982-3. At the time the record was 9.41 till NHRA allowed the alum SBC head. We were dead as the record instantly fell to 8.90 in a heart beat.(all the light, low cubic inch cars took over 3000lbs and below)

It ran 9.40's @ 147mph weighing in at 3500lbs for A/MP. I dont think we ever hooked it(way too much gearing) Wish we had it to do all over, it would have been way faster. With tires then, a .320 first with a .586 rear....we were never going to hook it. We used to paint stripe the axles with red paint, and they came out looking like a Barber Shop Pole.

Of course back in the late 70's, we never did flow bench stuff. Foder built this intake, it was probably the best RA-V intake ever done for a RA-V. 100% equal length. The exhaust done by CJ Batten was done that way because it was the thing to do back then. Run the raised ports, make them small and the headers big. (2 1/4)

Now they are up to 65 to 70%. I cant believe that engine made that much power on the low flowing exhaust. It proves how much potential there is in a RA-V. Way more than any conventional Pontiac head design. It simply doesnt have the cross sectional area in the intake port that can compete.

Car looks really cool.

Lynn
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  #11  
Old 11-24-2005, 08:20 PM
Jeff V Jeff V is offline
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That's cool and very exotic.I was wondering the same thing,why use RAV's?With that type of set up you could run low 8's with low compression d-ports.Nice fabrication.

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  #12  
Old 11-24-2005, 08:25 PM
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Cool motor, is that a firebird it is in?

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  #13  
Old 11-24-2005, 09:26 PM
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Quote:
Originally Posted by JSAauto
That looks like it's gonna be fun!! Nice work so far!!

A list of questions........

Who built the intake and are the injectors at a 45 degree angle to the port?? I would guess that pointing the injectors down the intake port path would be a better idea similar to LS1 technology.

Not to sound offensive.... but why the RAV? Is it just an nastalgia thing? Because it seems like the new Tiger heads would out perform those easily.

I would assume you have a HUGE water/ice to air intercooler in the car??

Why the rear axle driven alternator? Thats mostly a roundy round deal for cars that see alot of road time. Having seen Duttweiler build alot of this kind of stuff, they usually opt for one of those tiny Mitsubishi Alternators. Similar to the ones used on the RX-7's/8's. If you're going to be using a electronic fuel injection system and anything other than a mag, you're going to need an alternator on the motor. Make for better performance from the electronics/electrical system, plus makes for a better cycle to ground when things are operating.

Lastly.. Is that the Vortec mondo?? Looks like it.

Congratulations on the very nice ride. I love seeing cars like this because they are different, and you can tell you've spent alot of blood, time and sweat on this one.

Yes the injectors are about 45 degree angle to port...Foder built the intake in the 70's....Youngs perf in Alabama modified it...

I was gonna use a set of HO heads off a 72 GTO but these came available from Lynn and I bought the heads and intake ( Hey Lynn thanks for the compliment) The Tiger heads were not availble at that time...but I think that these heads will be pretty damn good...remember Welter is running edlebrocks that flow the same or less than mine on the intake and exhaust....

Yes we are running a large Youngs perf ice/water to air intercooler that has been fabbed as the passenger seat in the car...the water tank is in the trunk of the car.

We did not want and/or did not have alot of room on the snout of the crank for the alternator and locating it to the rear axle keeps it closer to the battery anyway...

It is a Vortech X trim...thanks for the compliments...

  #14  
Old 11-24-2005, 09:29 PM
cls cls is offline
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Quote:
Originally Posted by Robert Imhof
Cool motor, is that a firebird it is in?

Yes 1970 Trans Am

  #15  
Old 11-24-2005, 09:36 PM
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John,

The blower is a XX Vortech supercharger just like the one that allowed Jimmy Keen to run high 7s with a 347 inch engine in a 3000 lb mandatory weight Mustang. I think Lee will be fast enough for his blood. He is doing it cause he loves Pontiacs, the V is different, and the car should impress a few people from the Ford and Chebby camps.

The alternator driven by the rear axle will have lots of juice anytime the car is past the 60 ft mark. The speed of the alternator will be more easily controlled vs tied to the engine and will be closer to the trunk mounted battery. A axle mount will also allow other advantages. My only fear is that the power will hit the axle so hard the alternator vibrates itself to death.

Tom V.

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  #16  
Old 11-24-2005, 09:42 PM
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Hey Tom....it is an X trim not XX ...remember....

L

  #17  
Old 11-24-2005, 09:47 PM
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Oops!

I forgot, Yep you got the X version before Jimmy went to the double XX. Sorry!

Tom V.

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  #18  
Old 11-24-2005, 09:54 PM
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Its alright if I remember half of what you know about this stuff when I am your age I'll be a happy fella ... LOL

  #19  
Old 11-24-2005, 11:31 PM
CMac455 CMac455 is offline
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cls,

What EFI setup are you using, or are you just doing direct injection?

Just wonderin....


Last edited by CMac455; 11-24-2005 at 11:52 PM.
  #20  
Old 11-24-2005, 11:45 PM
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Freakin nice!!!!

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