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RobFrost RobFrost is offline
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Join Date: Jul 2021
Posts: 690
What cams for a fast street short stroke 2.3 at 10.5:1?

I'm putting 96mm AE 10.5:1 pistons into a 2.2E and I was wondering what cams are ideal for a redline in the 7,000s. I'll be using standard valvetrain which I presume will limit me to no more than say 7,500 rpm I guess.

I've mildly ported the heads and stacks about 2mm and aim to keep the MFI if I can get the right space cams made.

Twin plug is on the table if it's needed. By which I mean, I am unwilling to make any compromise in order to avoid twin plug.

I want it to be relatively usable for daily driving but for the revs to go all the way up.

I guess key questions are;
  • what's the optimal amount of overlap for this CR / head combination to get the maximum fuel in while easing any detonation issues at high throttle low revs?
  • how much lift can I get away with, with these pistons?
  • what's the ramp limit with stock valvetrain?

I was initially thinking of a mod solex cam but more lately I've been contemplating whether that will rev as high as I want.
Old 07-12-2024, 12:00 AM
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