Chevy firing order

Bobby Lundholm · 04-09-2007, 10:20 AM

Anyone found any significant gains on performance by making the 4/7 change? Just wondering if it is worth the time and effort.
My combo is the 255/280.

Bobby Lundholm
1969 Nova
9516 G/SA

dannyw · 04-09-2007, 12:22 PM

Bobby ,I talked to Chris at comp cams and was told ,no gain anywhere.This deal is for HI HP motors..He has always been honest to all my questions and has provided me with good products...Hope this helps,,..

dannyw

04-09-2007, 08:09 PM

It will make the engine much smoother thru the entire operating range, idle on up. At least that's been my limited experience. If you follow the principle that smoother is better, then do it.

04-09-2007, 08:14 PM

Bobby, call me on this.
Painter

camaroracer · 04-09-2007, 08:49 PM

Couldn't it help an exhaust port, the 4/7 swap say on a Oval Port BBC head

04-09-2007, 10:20 AM	#1
Bobby Lundholm Member Join Date: Dec 2006 Location: Charlevoix, MI Posts: 421 Likes: 94 Liked 84 Times in 33 Posts	Chevy firing order Anyone found any significant gains on performance by making the 4/7 change? Just wondering if it is worth the time and effort. My combo is the 255/280. Bobby Lundholm 1969 Nova 9516 G/SA __________________ Bobby Lundholm 3516 G/SA

04-09-2007, 12:22 PM	#2
dannyw Member Join Date: Dec 2005 Location: LaGrange,NC Posts: 124 Likes: 0 Liked 0 Times in 0 Posts	Bobby ,I talked to Chris at comp cams and was told ,no gain anywhere.This deal is for HI HP motors..He has always been honest to all my questions and has provided me with good products...Hope this helps,,.. dannyw __________________ Danny Waters, Jr.

04-09-2007, 08:09 PM	#3
Jeff Lee Guest Posts: n/a	It will make the engine much smoother thru the entire operating range, idle on up. At least that's been my limited experience. If you follow the principle that smoother is better, then do it.

04-09-2007, 08:14 PM	#4
Painter Guest Posts: n/a	Bobby, call me on this. Painter

04-09-2007, 08:49 PM	#5
camaroracer Junior Member Join Date: Aug 2006 Posts: 22 Likes: 0 Liked 0 Times in 0 Posts	Couldn't it help an exhaust port, the 4/7 swap say on a Oval Port BBC head