ntpa light pro stock turbo size rule? March 25, 2011 01:59PM
I thought there was a 4.1 turbo limit in the region 2 Light pro-stock class, however i heard today that the rule is actually 540 cubic inch, p-pump and no limit on turbo size. I just want to clarify the turbo rule! Thanks in advance!!

Re: ntpa light pro stock turbo size rule? March 25, 2011 03:05PM
I don't think there is a limit in Light Pro Stock. Most 4.1 classes are Limited Pro.

Re: ntpa light pro stock turbo size rule? March 25, 2011 03:05PM
According to the 2011 rule book, light prostock is 540 cid and any turbo may be used. However, the limited prostock is 640 cid, but there is a 4.5" exhaust restriction on the turbo.

Not sure where the 4.1 rules come from.

Re: ntpa light pro stock turbo size rule? March 27, 2011 10:53AM
There isn't a turbo limit in the NTPA Light Pro class. The class sumitted an agenda item to limit the exhaust side to a "G" trim, but the full boards didn't feel it was needed, and there was opposition to random checking. But we can put on fuel and water valves!

Re: ntpa light pro stock turbo size rule? March 27, 2011 01:11PM
That would have been an excellent rule. Hate to be spending 10K plus on turboes for this class someday.

Re: ntpa light pro stock turbo size rule? March 27, 2011 01:25PM
This sounds like it is going to be a fun class. I hope to see it in action sometime this year. Will it be at the knoxville, IA pull?

Re: ntpa light pro stock turbo size rule? March 27, 2011 02:42PM
Pretty sure Light Pro is only a Region II class.

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