Forum: HoseHeads Sprint Car General Forum (go)
Moderators: dirtonly  /  dmantx  /  hosehead

So I am wondering? Do any tracks or sanctioning bodies ever actually pump motors anymore to see if they are actually 410 cubic inch? I have heard that there are some guys (names that would surprise you), that are actually running 430 cubic inches or more on a regular basis. These are being run at some of the premier tracks in the upper mid-west. Can anyone actually confirm that there is pumping of motors happening anywhere or not?

I went right to the Knoxville web site and here is what I found.

". Engines with cubic inch size up to 437 cu. in. will be allowed providing the following specifications are in place. 4.165" maximum Bore,4.00" maximum stroke,15 degree minimum valve to deck angle,

3.750" maximum intake face height from deck to valve cover rail, 2 5/8" maximum injector stack diameter for at least 4 inches of the stack length for engines under 430.000 cu.in. 2 ½" maximum for engines over 430.000 cu.in. 1 7/8 "maximum header size from head to collector.

*-12 Brodix heads are considered to be 15 degrees unless severely altered. 16, 18 and 23 degree heads are acceptable. Please contact us with any questions before building or purchasing these engines.

LS Engine rules are provided in a separate package of rules available from approved engine builders."

In order to run 430 cubic inch, and this would be Knoxville only, no other tracks, you would need to conform to the

other stipulations also...pretty sure that is NOT happening.

They pump every week in PA the winner and another car

Our winner gets pumped each night as well as a few spot checks from time to time. We just had our pump in last winter to make sure it was accurate and in good working order. We did not want any complaints that our equipment was not correct.

Dick Symoens
Treasurer/Statistician/Web
Interstate Racing Association