how to make an iowa spree run over 25

Kenny_McCormic · Post by **Kenny_McCormic** » Mon Apr 06, 2009 8:21 pm

A late piston and early head will produce the best results according to noiseguy. Just check your clearance if you go that way with the shaved head.

circusracer · Post by **circusracer** » Mon Apr 06, 2009 8:23 pm

forewheelerdude wrote:thanks for all the info. GREATLY appreciated! also one more question about the differences between the 85 and 86 heads- i was wondering since i already shaved .020 off my 85 spree if the whole sleeve head and piston would fit on my 86 spree?

Yes they will fit. With the domed 86 piston and the shaved 85 head you will notice much better acceleration.

circusracer · Post by **circusracer** » Mon Apr 06, 2009 8:24 pm

Kenny_McCormic wrote:A late piston and early head will produce the best results according to noiseguy. Just check your clearance if you go that way with the shaved head.

LOL, you beat me by two minutes Kenny, I need to learn to type faster.