| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#81
10-12-2016, 10:51 PM
|
||||
|
||||
Quote:
If you take a close look at cast Pontiac heads, one of the main concerns to me would be the ability to repair and weld on the heads. Casting quality along with product availability would be at the top of my list. I'm sure you know the limitations of the heads you are running and any change would need to be significant. You are already at a disadvantage with the Pontiac bore space. Any wedge design will require a huge reduction in exhaust valve size to put a 2.300+ intake valve in it. A canted head or a semi hemi would allow for increased valve size on the small bore. I like the V valve layout, casting quality of the DCI head is top notch as is the CV-1, I would toss the Warp head into the mix. Calvin Hill Hill Performance 708-250-7420 |
|
#82
10-12-2016, 11:02 PM
|
||||
|
||||
|
4.25 is about the biggest practical bore for the aluminum block with sleeves. You have to leave aluminum wall between bores and you need a minimum wall for the sleeve.
Eric
__________________
"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
|
#83
10-13-2016, 12:17 AM
|
||||
|
||||
|
Quote:
Calvin Hill Hill Performance 708-250-7420 |
|
#84
10-13-2016, 02:05 AM
|
||||
|
||||
|
Quote:
I'd say the more important hemi advantage is valve sizes (for a given bore size).
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
|
#85
10-13-2016, 03:02 AM
|
||||
|
||||
|
If you have the flow area and an unshrouded intake valve of the same size, I don't see the issue. With a billet canted valve head two plugs should package as well. But hey, there are billet hemi heads available as well.
What are you thinking Calvin? Quote:
|
|
#86
10-13-2016, 11:38 AM
|
|||
|
|||
|
My thoughts about this subject and I may be completely off base here. Are that Justin has already chose a direction and he is just trying to confirm his choice and possibly fishing for a financial contributor. My opinion is that he should stay with what made him successful so far, and that is his grass roots style of racing with an under dog. If he chooses to go with the main stream which would be smart to be competitive in NHRA Promod racing. He will be successful, but blend in with the rest of the crowd. My hat is off to him and his success so far. He has brought the traditional Pontiac platform back into the spot light and for that I commend him. Just my 2 cents!!!!!
__________________
Don Johnston DCI MOTORSPORTS LLC 330-850-5050 shop 330-628-3354 cell Designer if the DCI Tiger Heads and the NEW DCI Ram Air 5 Heads !!!!! |
|
#87
10-13-2016, 02:21 PM
|
|||
|
|||
|
That's interesting Don and you could be right. One additional thing Justin has going for him right now is that he has the Big personality and is THE STAR of the street outlaw TV show. I want him to stay Pontiac, absolutely. But if the finances align and he has a chance to drive for an established team or puts together a serious sponsorship deal on his own, I don't think he will blend into the crowd, no matter what's under the hood. He will be covered heavily by the media until the TV show ends, or he goes many events without qualifying or going some rounds. It's all about that 15 minutes of fame stuff. He can damn well drive, so I believe he will have some staying power. And he has a youth movement behind him, which is really important to the Pontiac hobby and drag racing in general. As always, wishing him the best.
|
|
#88
10-13-2016, 06:07 PM
|
||||
|
||||
|
Quote:
The hemi is such a straight port and allows for a bigger valve. If he goes billet, why would he stay with a Pontiac bore space? Calvin Hill Hill Performance 708-250-7420 |
|
#89
10-13-2016, 06:24 PM
|
||||
|
||||
|
I wasn't thinking a 4.25 bore or a wedge. Maybe a 4.25 bore is right in aluminum at those boost levels. I was thinking 4.35 bore in iron and canted valves. A 2.4 intake is allowed which is the target. This might limit the exh valve size compared to a hemi design. No argument on the straight shot intake with a hemi. However in a billet canted head you can move the ports as high as you want. I don't see the draw back.
If he goes billet head the only reason to stay with a Pontiac bore spacing is to keep it a Pontiac. Like Justin said, what's cool about running up front with what else everyone else is running? Pontiac Power TTF! Quote:
|
|
#90
10-13-2016, 08:26 PM
|
|||
|
|||
|
Quote:
i vote for LiLjack- hes got almost as much dough as hillary, and doesnt mind spending it. justin, after reading your posts,, my humble opinion is this- if you want to build a motor that can be competitive in pro mod racing.. but have 'no opinion' as to which direction you should go... it seems logical that you should seek advice from someone that has everyday experience building promod motors and working with promod racers jmo
__________________
"He who laughs last, laughs loudest" |
|
#91
10-13-2016, 10:00 PM
|
||||
|
||||
|
Marty Palbykin is somewhat close to Justin (Tucson Arizona vs Oklahoma), has run Brad Anderson Pro Mod engines for years, Owns two of the latest BAE engines, and is still a Pontiac tuner/engine builder guy (wife's car) as well as a BAE engine builder guy, his car.
Who else has those credentials? Tom V. Just a little plug for Marty, nothing more.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
|
#92
10-13-2016, 10:47 PM
|
||||
|
||||
|
i haven't chosen a direction, and i dang sure haven't agreed to run any certain combo as of right now. I've had some killer offers to drive and even some great sponsorship opportunities, but i know temporary when i see it. I honestly feel like i can make a future for myself in professional drag racing, but the absolute only way to do that and keep the fan base transition easy enough for them to stick around, i have to stay pontiac. Pontiac car and pontiac engine. The car loosely resembles a firebird, so i have no major problem with the engine loosely resembling a pontiac lol. Now my new steel car will be as pontiac as a racecar can be bumper to bumper. I have some large companies on board for 2017, and i may lose those opportunities if i stay pontiac power and scare them into believing i can't win.
my latest question would be what is power and rpm difference between a canted valve head and a hemi head both sporting as close as you can get to nhra mandated valve size of 2.400
__________________
www.MidwestStreetCars.com Butler Performance Quillen Motorsports Don Dial Race Cars |
|
#93
10-13-2016, 10:49 PM
|
||||
|
||||
|
also dci i REEEEALLLY like to run ice water thru the heads and everything you have said so far has been on point!!!
__________________
www.MidwestStreetCars.com Butler Performance Quillen Motorsports Don Dial Race Cars |
|
#94
10-13-2016, 11:37 PM
|
||||
|
||||
|
Quote:
Quote:
I have some hardware that will get you 2/3 of the way there that you're welcome to run. I'd look for WARP 6's or KRE HEMI's if it was me. If I can help yell. |
|
#95
10-13-2016, 11:52 PM
|
|||
|
|||
|
It's no coincidence Pontiac & Power both start with PO. What it equals is 1 Pissed Off engine.
|
|
#96
10-13-2016, 11:58 PM
|
||||
|
||||
|
Quote:
|
|
#97
10-14-2016, 01:01 AM
|
||||
|
||||
|
Quote:
Now that's what I'm talking about! GTO George |
|
#98
10-14-2016, 01:03 AM
|
||||
|
||||
|
Quote:
How well did Marty do in Pro Mod.......just saying. GTO George |
|
#99
10-14-2016, 03:31 AM
|
||||
|
||||
|
Quote:
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
|
#100
10-14-2016, 03:56 AM
|
||||
|
||||
|
Quote:
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
