1/2"-20 thread with internal air bleed.  

Straight screen tip -
Available in a variety of lengths

Measure your tip after the threads.

Call Mike for advice or e-mail us with engine and fuel specs.

Standard tip length is 1/2"  - Order the length you want.  The longer they are the more they cost. 

Late style manifolds with nozzles inside pointing to the valve.
 For Alcohol- use the longest possible-       1"     2"      3.5"   

( 5" fit Mega Power only )
 
305 SPRINT CARS USE EITHER A 10AS OR 11AS  X 3 1/2" LONG- or 1" Long
360 SPRINT CARS USE EITHER A 12AS OR 14AS X 3 1/2" LONG- or 1" long
 

Never run 16AS   or larger  in a 360 Engine - you will build no heat

3-1/2" tip  Alcohol *  Most Popular
5-1/2"  tip  Alcohol -  New Style Mega Power manifolds only