Ya gotta be kidding...

[Jesse Kershaw]

The 429 is our answer to the 426 Hemi, and the 427 Chevy. The cam lift is line on line with the Hemi combo.

The throttle body is our off-the-shelf unit. Big but front entry as opposed to the scoop of the Hemi. I consider it a wash. Likewise the head is 12 year old NASCAR tech but it's off-the-shelf as well. However the 429 is at .650" lift while the NASCAR engines are over 1". Huge difference! It becomes an apples and oranges argument trying to compare the engines.

These engines are designed specifically for Factory Showdown. It should be very fun and exciting, and not affect any older combos as the natural class is BB. The Dodge guys are dominating FS/B right now and we want to mix it up a little. The point is to promote Stock racing and help Factory Showdown grow, having all 3 makes in is a big part of that.

Hopefully Chevy ups their ante with a .650" lift SOLID lifter cam and maybe a CNC port on their intake like the Dodge has and we should be VERY level in performance.

I think we've got the best teams running Ford's (although I do like the Barton and Teuton teams) and I'm excited for Indy. I hope the Chevy guys get a combo that gives them the specs to be right inline with the Ford and Mopar so we can stop the paperwork exercise, get to work and settle this on the track.

[Rory McNeil]

Originally Posted by Jeff Teuton

The Mopar's use a 4 hole 1 3/4 in on the DP's which is the same size as 750 CFM 4150 series carb, but it is rated @ 1000 cfm. The 426 Hemi uses a 2" which is the same as a 4500 series base and is rated @ 1600 cfm. Course we are only flowing air. The Copo 427 single blade has a slightly larger area than the 2" 4 bore that we use.

Also, your 4 1 3/4" throttle blades are not encumbered by venturis and boosters getting "in the way". Thus the higher flow ratings.