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Author Topic:   new rules
hoosier transplant
Dirt Maniac

Total posts: 104
posted November 08, 2005 05:05 PM  
I run a Super Stock class and they have changed the rules for next year. They have went to a 360 cubic inch max with a cam that is .540/.560. I was running a 396 stroker with a weight addition and a 4412 carb. Motor stayed up or was faster than most and only was turning 6000-6200, which is what I wanted when I had motor built. I didn't want to turn 8500 like all the 355's because I didn't have money to build new motors during the racing season. My question is does the restriction of the new cam hurt a 355 more or less than a stroker? I am not a motor man so this may sound like a dumb question to those of you that are, but I have questions. Can you take a 327 and stroke it and have a torkier motor? Also, last year there was a 500 pound weight penalty if you ran a 6 cylinder. This year it isn't in rules at all. Would this be another option? Rules have dropped min weight from 3000 to 2750. Just trying to get some ideas because I never like to "follow the leader".

STREET16
Dirt Maniac

Total posts: 158
posted November 08, 2005 05:41 PM  
I just got a look at the new rules myself. First, a 327 is a 4" bore, just like a 350, but a shorter stroke. You could try stroking a 305, but I don't know how much bang-for -the-buck it will get you. As for the cam rule, you can make decent power within the specs, but it basically does away with the roller cams. One thing I noticed, was that now they will allow you to run a cheater button. That should allow some of the poor boys to run with the bert/brinn crowd. I'm a little confused with the changes to the rear suspension. I run an OEM four link, and the rules don't say it's legal. I'm pretty sure it is supposed to be and probably just got omitted.

racer17j
Dirt Forum Champ
Total posts: 5390
posted November 08, 2005 06:10 PM  
Weight PENALTY for a 6 cylinder?!?

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-stand on it-

STREET16
Dirt Maniac

Total posts: 158
posted November 09, 2005 10:30 AM  
quote:
Originally posted by DJR22:
Weight PENALTY for a 6 cylinder?!?
Actually, I believe the weight penalty was for the Barnett Series Modifieds. It was 150 Lbs mounted infront of the front cross-member. They had so many weight penalties in the Super stock rules, it may have been in there too - I lost track.


hobby39
Dirt Maniac

Total posts: 112
posted November 11, 2005 08:00 AM  
One thing to remember that you didn't post about the cam is their measuring it a zero lash. Valve lift rule: .540 intake, .560 exhaust, measured at zero lash. I'm not a Cam guy so what exactly does that mean on the track web site I've been seeing a lot of complaining because their going to be measuring it at zero lash.

mike9
Dirt Full Roller

Total posts: 72
posted November 11, 2005 01:21 PM  
well the problem with measuring a cam at "zero" lash is that unless its a hydraulic you dont run them at zero most solid lifter cams run between .018 and .030 lash , which is the distance from the rocker to the valve when the lifter is on the base of the lobe and if you had a cam with so your actuall lift will be this much less so you have a engine set up with your .540 lift the way you are running it and then they tighten the rockers up till they are at zero and all of a sudden you are over the lift rule . the only way to really check would be to check em after the main as they are raced. its a stupid rule in my opinion

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