Best pump gas piston/cam setup question

[hondaforlife]

I will be doing a pump gas piston/cam combo this spring and I've got a few options that I need help with. I will be running a hotcams stage 2, ported head, and a regular edelbrock quicksilver. My options are 10:1 wiseco 426, 10.8:1 je 416, or 10.6:1 ross 406. Which setup would be best suited for running 93 octane premium while and still getting the most mid and top end power out of it? Should I go with the bigger bore 426 10:1 and just use a thinner gasket and shave the jug a little bit to pick up some compression? Any help is appreciated, thanks.

[400exrider707]

do a standard bore or a 406 by the way you can run the 11:1 wiseco on pump. Actually you could run the 12:1 wiseco on pump cuase its not actually 12:1.

[hondaforlife]

Does anyone know what an 11:1 wiseco 426's compression actually comes out to with stock gaskets and jug?

[cals400ex]

it seems you have your mind on a 426. i am not telling you not too, but there is no way i would run a 426 on the stock sleeve. it gets pretty thin at that point. for all out racing, there is no replacement for displacement. however, i have ran a 406, 416, and a 426 and the power output isn't all that different. the 406 produced less heat too. i could easily feel more heat out of the 426 on my legs.


i have a 406 wiseco piston forsale if your interested.

[hondaforlife]

Was your 406 10.6:1 or 11? What type of gas did you run with your motors? Thanks

[400exrider707]

I run 93 with my 11:1

[Rico]

JE 10.8:1 piston and HRC cam.


Makes the motor strong like King Kong.....:muscle:

[cals400ex]

i sent you a pm with the details on the 406 piston.

[F-16Guy]

Are you on a tight budget? If you want the best pump gas piston set up, I would find out if you can get your hands on a flat top J.E. or Wiseco piston. If you use a flat top piston and have the cylinder machined to get the proper deck height and "squish" area, you'll be able to run a higher compression ratio because the combustion will be more efficient. The explosion will be more evenly distributed over the top of the piston and will reduce the chance of hot spots. Things such as hot spots on the piston and hot carbon deposits can ignite the fuel/air mixture before the spark plug does, causing that "knocking" sound. If the combustion chamber and piston stay cooler, you can run a higher compression ratio.