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Re: Pro stock tech [Re: Alan Prusiensky] #2477736
04/05/18 03:31 AM
04/05/18 03:31 AM
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brisbane,australia
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coletrickle Offline
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Originally Posted By Alan Prusiensky
If someone can tell me how to upload a picture. I have a racepak run on my phone.

I have some early R/D heads and couple of manifolds and the block that won at denver for the first new hemi win,I'm trying to work out how to post some pics?

Re: Pro stock tech [Re: Alan Prusiensky] #2477743
04/05/18 05:35 AM
04/05/18 05:35 AM
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brisbane,australia
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coletrickle Offline
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Nah no pics yet i'll have to go see my 9 yr old neice,lol

Re: Pro stock tech [Re: Alan Prusiensky] #2477761
04/05/18 08:32 AM
04/05/18 08:32 AM
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London, England
Gavin Offline
top fuel
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Awesome information Alan! In 30+ years of following NHRA I don't think I've heard someone so willing to share information in a Pro class, really interesting info and thanks for coming on Moparts. Keep flying the flag, we'll keep rooting for you!!

Also heard your recent interview on WFO radio, good job. (other members, you should check it out if you haven't already)

Re: Pro stock tech [Re: wyoming] #2477804
04/05/18 10:30 AM
04/05/18 10:30 AM
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Left Coast
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This is one of the most interesting threads in Moparts history. Please keep it up. I have always been a fan of Mopar pro stock racing and I go WAY back to the original Ramchargers team. Good luck at the 4 wides this weekend. We'll actually be there in our BAE hemi powered Mustang making some Big Tire Grudge hits on Friday. Hopefully I'll have some time to stop by your pit.

Re: Pro stock tech [Re: Alan Prusiensky] #2478414
04/06/18 04:36 PM
04/06/18 04:36 PM
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Fulton County, PA
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CMcAllister Offline
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I know you're an engine guy, I try to pay attention to what's going on behind the flywheel.

I've been told that teams will cut certain proprietary bars out their old cars before selling them to prevent anyone from knowing their particular configuration. Truth or BS? How much are teams involved in the design of the chassis? Do they have they're own requirements/configurations that they like? Or do they rely on the builder to provide what's best? Do you use a certain amount of flex by design in the chassis or do you try to make it stiff and use suspension adjustments and components for desired changes and control? Between testing and racing, I expect these cars get a lot more laps than people may realize? How many runs will you typically get on a car before it's considered used up and sold?


If the results don't match the theory, change the theory.
Re: Pro stock tech [Re: Alan Prusiensky] #2479573
04/08/18 06:16 PM
04/08/18 06:16 PM
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Charlotte, North Carolina
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I'm looking at upgrading my M/S 3" driveshaft. I have heard from some that the C/F driveshafts have helped with et. Have you found the same results? I wasn't sure how much it would help since the rotational mass is on such a small diameter.


[image][/image]
Re: Pro stock tech [Re: Alan Prusiensky] #2479609
04/08/18 07:48 PM
04/08/18 07:48 PM
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LONG ISLAND
fishy340 Offline
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LONG ISLAND
Thanks Al,curious to know an approximate idea of the lift in a prostock motor and are the cams 70mm ?

Re: Pro stock tech [Re: Alan Prusiensky] #2479636
04/08/18 08:52 PM
04/08/18 08:52 PM
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New Smyrna Beach FL
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scottb Offline
pro stock
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Alan does Roy J offer any advice on running the hemi motor

Re: Pro stock tech [Re: CMcAllister] #2479680
04/08/18 10:09 PM
04/08/18 10:09 PM
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Posts: 92
New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Originally Posted By CMcAllister
I know you're an engine guy, I try to pay attention to what's going on behind the flywheel.

I've been told that teams will cut certain proprietary bars out their old cars before selling them to prevent anyone from knowing their particular configuration. Truth or BS? How much are teams involved in the design of the chassis? Do they have they're own requirements/configurations that they like? Or do they rely on the builder to provide what's best? Do you use a certain amount of flex by design in the chassis or do you try to make it stiff and use suspension adjustments and components for desired changes and control? Between testing and racing, I expect these cars get a lot more laps than people may realize? How many runs will you typically get on a car before it's considered used up and sold?
I would say maybe years back somebody like WJ or bob Glidden might cut bars out but nobody would these days. I now Jason and Greg's cars probably have thousands of runs on them. Some teams might have their own way of building a car but mostly Jerry Haas does every car basically the same and they work.

Last edited by Alan Prusiensky; 04/08/18 10:10 PM.
Re: Pro stock tech [Re: scottb] #2479686
04/08/18 10:12 PM
04/08/18 10:12 PM
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New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Originally Posted By scottb
Alan does Roy J offer any advice on running the hemi motor
2 years back when I came out with the fuel injection Allen helped a little bit but as far as Roy helping with the engine no.If you rely on somebody else you will never figure it out
.

Re: Pro stock tech [Re: fishy340] #2479688
04/08/18 10:15 PM
04/08/18 10:15 PM
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New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Originally Posted By fishy340
Thanks Al,curious to know an approximate idea of the lift in a prostock motor and are the cams 70mm ?
Are cam is a 78 mm clamshell and its 1.200 in lift.

Re: Pro stock tech [Re: sgcuda] #2479689
04/08/18 10:17 PM
04/08/18 10:17 PM
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New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Originally Posted By sgcuda
I'm looking at upgrading my M/S 3" driveshaft. I have heard from some that the C/F driveshafts have helped with et. Have you found the same results? I wasn't sure how much it would help since the rotational mass is on such a small diameter.
I don't know of anybody in Pro Stock that runs a carbon fiber driveshaft. Pretty much every driveshaft I've ever seen here is a Mark Williams aluminum driveshaft.

Re: Pro stock tech [Re: Alan Prusiensky] #2479698
04/08/18 10:29 PM
04/08/18 10:29 PM
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Fulton County, PA
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CMcAllister Offline
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What's your opinion of 4-wide?


If the results don't match the theory, change the theory.
Re: Pro stock tech [Re: Alan Prusiensky] #2479699
04/08/18 10:33 PM
04/08/18 10:33 PM
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B.C.
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mk_ Offline
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Not sure if you want to answer this question....... can I ask how much weight is usually on the back tires, and if the left rear is much more than the right rear?

Thanks, Manny

Re: Pro stock tech [Re: mk_] #2479703
04/08/18 10:37 PM
04/08/18 10:37 PM
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Another question.... what head and neck restraint do you prefer?

Manny

Re: Pro stock tech [Re: mk_] #2479714
04/08/18 10:59 PM
04/08/18 10:59 PM
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New Jersey
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Alan Prusiensky Offline OP
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Originally Posted By SSAHfan
Not sure if you want to answer this question....... can I ask how much weight is usually on the back tires, and if the left rear is much more than the right rear?

Thanks, Manny
1100 on the rear wheels. I haven't had it on scales for a while so I don't know how much is on each wheel. As far as a Hans I use a rage 3 I'm not even sure if they make that anymore it's actually molded into my seat so I don't even know its back there which I like.

Re: Pro stock tech [Re: CMcAllister] #2479717
04/08/18 11:00 PM
04/08/18 11:00 PM
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New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Originally Posted By CMcAllister
What's your opinion of 4-wide?
the 4wide seems a little confusing to watch but I don't mind it.

Re: Pro stock tech [Re: Alan Prusiensky] #2479741
04/08/18 11:36 PM
04/08/18 11:36 PM
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las vegas
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Came by while you were at driver introduction and talked to your dad for awhile..he showed me pictures of your 69 charger his 69 RR...I was passing out ET slips at the time booth for 3 days...LOL

Some people think that job is easy...try it someday at a national event....lol


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: Pro stock tech [Re: Alan Prusiensky] #2479811
04/09/18 06:13 AM
04/09/18 06:13 AM
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Mt.Gilead, Ohio
OhioMopar Offline
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Thanks for starting this thread. I look forward to following it and learning about your race program. Good to know there is still a Mopar presence competing.


1966 Dodge Coronet 500
1969 Dart GTS 340
1969 Super Bee.
2019 Ram 2500 Big Horn.
Looking for the original block for my Bee. The last 4 are 7449
Re: Pro stock tech [Re: Alan Prusiensky] #2480193
04/09/18 08:53 PM
04/09/18 08:53 PM
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Posts: 92
New Jersey
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Alan Prusiensky Offline OP
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New Jersey
Vegas recap
Q1 we ran the back up engine this weekend because I broke the race Motor on the Dyno last week. So we had no tune up for the motor with the manifold that we run now. We maybe had 4 cylinders misfiring all the way down the track and it showed 7.06 at 196
Q2 I made a lot of adjustment's to the fuel tune up and the engine came to live and blew the tires off. Way to much clutch. The bad part about it is still couldn't work too much on the fuel because we only went one second into the Run before I lifted. So not a lot of o2 information.
Q3 we changed one of the discs in the clutch to a less aggressive disc just because the air was so bad almost 5000 feet. we only had 4 grams of counter weight. Got down ok still had some cylinders misfiring. Still had too much clutch on it but went 6.84 with some decent speed at almost 203.
Q4 made more adjustments to the fuel took more clutch out. It left okay but in the meantime the racepak v-net cable disconnected and I had no shift lights and no O2's. I bounced it off the rev limiter really bad in first gear shifted hit it again and second gear realize that I didn't have any shift lights then shifted it by ear into 4th and into 5th and went 6.86 at 202. I didn't think that was that bad of a pass because of the amount of time that I was on the rev limiter. also i didn't have no O2's because of the vnet cable disconnecting so couldn't make any more adjustments to the fuel for E1.
E1 the air was much better so I added 1.7 % to the fuel map for the weather change. I added a 1/4 turn of base to the clutch and 3 grams. I got put in lane 1 I never got a test hit in that lane because of the k&n challenge. We left higher on Sunday 7200 the car drove hard left. I had to lift for .3 seconds and I hit the chip in second gear and third gear. hard to watch for the shift light when you are trying to keep the car off the guardrail. Got it straight gas to the floor and still went a 6.75 at 204.7 all over the chip at the finish line. I'm pretty sure with all the things wrong with that pass it had a 6.69 in it. Not bad for the back up engine.
With all the things that went wrong this weekend I'm still pretty excited to head to Houston.

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