Nitromater
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PRO/STOCK PREDICTIONS for 2016
- Thread starter my friends call me Zappy
- Start date
Just Paul
Nitro Member
Those pictures on the previous page are just regular pro stocks with no hood scoop cut, and the Camaro and Mustang in the pics are not even the current body. The Mustang might be 2 versions ago.
The cars are going to look nothing different with the exception of the scoop. I'm pretty sure Rick Jones is selling a plug so the teams can just glass it in where the scoop hole used to be.
The cars are going to look nothing different with the exception of the scoop. I'm pretty sure Rick Jones is selling a plug so the teams can just glass it in where the scoop hole used to be.
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Doug in the woods
Nitro Member
Curious as to the term Front Facing) throttle body? The pic of the ARCA spec engine looks like the throttle body points up not forward. Maybe I am reading it wrong??
Way back when pro stock started didn't they use air ducts in the grill or cowl induction??
Doesn't sound like it should be an issue. Any figure as to how much the present day hood scoops require in the form of HP
Way back when pro stock started didn't they use air ducts in the grill or cowl induction??
Doesn't sound like it should be an issue. Any figure as to how much the present day hood scoops require in the form of HP
Nitro Cane
Nitro Member
Whats this about WJ and KJ coming back ? Did I miss sumpin ?
my friends call me Zappy
Nitro Member
We can only hope.......
Rajunz
Nitro Member
I agree, this is close with the rpm limits and wheelie bars.
stitcherbob
Nitro Member
It's going to be the extra heat an EFI motor has to deal with. WJ sez -
"With a carburetor engine, as that fuel is emitted out of the booster and atomized it cools the incoming air charge due to evaporation. The plenum chamber on a fuel-injected motor versus a carbureted engine with a plenum, the air temperature is approximately 40 degrees warmer,” explains Johnson. “Every 10 degrees in a 500 inch motor is about 20 to 21 horsepower. So we expect to be 80 horsepower off in the first hit. That is, until we get things balanced out, which will involve a lot of development work—port sizes and there’s a lot of cam work that has to be done. Ultimately, I still consider it a step in the right direction. That 40 degrees has an effect on the tuned length of the runner.”
"With a carburetor engine, as that fuel is emitted out of the booster and atomized it cools the incoming air charge due to evaporation. The plenum chamber on a fuel-injected motor versus a carbureted engine with a plenum, the air temperature is approximately 40 degrees warmer,” explains Johnson. “Every 10 degrees in a 500 inch motor is about 20 to 21 horsepower. So we expect to be 80 horsepower off in the first hit. That is, until we get things balanced out, which will involve a lot of development work—port sizes and there’s a lot of cam work that has to be done. Ultimately, I still consider it a step in the right direction. That 40 degrees has an effect on the tuned length of the runner.”
my friends call me Zappy
Nitro Member
Thanks for the post, VERY interesting.
Bob K.
Nitro Member
The rev limiter will be the biggest difference. This past year they were only getting 4-5 runs on valve springs. I saw someone mention "cowl induction" Not hardly with the throttle body on the front of the plenum. I think the air will come from the grill area. I think we might see 6.70's at Pomona? We shall see. Maybe they will get two more runs on valve springs.
Doug in the woods
Nitro Member
I wonder if a team can cool their manifolds as was done in years past when innovation was the name of the game.
As for a grill area induction system, can't see more than $500 made from common sheet metal unless you make a duct system from say carbon fiber.
As for cooling maybe dry ice or CO2 under the manifold ff allowed.
This issue of getting air from the grill area is not something new. I made a cool air induction system for a Camaro I had out of dryer vent hose and some sheet metal. Worked really nice and increased my gas mileage.
As for a grill area induction system, can't see more than $500 made from common sheet metal unless you make a duct system from say carbon fiber.
As for cooling maybe dry ice or CO2 under the manifold ff allowed.
This issue of getting air from the grill area is not something new. I made a cool air induction system for a Camaro I had out of dryer vent hose and some sheet metal. Worked really nice and increased my gas mileage.
Sean D, shondoo
Nitro Member
This is about where I'm thinking they'll run. Somewhere in the .70's, with the exception of being over 200mph.
Valve spring life increase? Marginal at best. The cam profiles themselves are about as detrimental to the spring as the cycle. Even 10,500 is a bunch of RPM for springs with that kind of cam profile. One run, MAYBE two. The best thing they could do in regards to valve train life is let them go to a pneumatic set-up and get over it.
Sean D
Next year we'll be losing about 500 rpm and the current scoop.
I expect all the teams will find a way to recover a lot of intake stagnation pressure despite the new intake rules.
What efi will offer if anything remains an unknown.
Some of the RPM effect can be offset by re-optimising around the new speed and the rest will take development time but you have to believe that in a year or two, hp will be at least as high as in the carb era?
I expect all the teams will find a way to recover a lot of intake stagnation pressure despite the new intake rules.
What efi will offer if anything remains an unknown.
Some of the RPM effect can be offset by re-optimising around the new speed and the rest will take development time but you have to believe that in a year or two, hp will be at least as high as in the carb era?
Gas door lid.
