pushrod size

Weekend Racer · 05-21-2012, 10:06 PM

I have to order a new pushrod set for my small block chevy ss engine . At time I am using 3/8 taper from comp cam . What size do you recommand?
Thank!

Ed Carpenter · 05-22-2012, 03:55 AM

7/16 is what my SS engine has in it.

Alan Roehrich · 05-22-2012, 08:14 AM

The current prevailing theory, which I subscribe to, is that you cannot make a pushrod too stiff. If you can get a 7/16" x 0.165" wall pushrod in it, that's what I'd put in it. We all run insane cam profiles and turn them ridiculous RPM, using monster valvesprings. That calls for all the pushrod you can get, to reduce or eliminate the tendency of the pushrod to act like a spring. You only want one spring in your valvetrain, the one that holds the valve shut.

buzzinhalfdozen · 05-22-2012, 09:03 AM

Straight 1/2in. on the exhaust. 1/2-7/16 taper on the intake both .165 wall. Agree bigger, stiffer is better. Joe

Weekend Racer · 05-24-2012, 08:59 PM

Thanks ! for your good advise.

05-21-2012, 10:06 PM	#1
Weekend Racer Junior Member Join Date: Feb 2003 Location: P.Q. Posts: 68 Likes: 1 Liked 1 Time in 1 Post	pushrod size I have to order a new pushrod set for my small block chevy ss engine . At time I am using 3/8 taper from comp cam . What size do you recommand? Thank!

05-22-2012, 03:55 AM	#2
Ed Carpenter Live Reporter Join Date: May 2006 Location: Dripping Springs, Tx Posts: 2,709 Likes: 186 Liked 520 Times in 132 Posts	Re: pushrod size 7/16 is what my SS engine has in it. __________________ Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development

05-22-2012, 08:14 AM	#3
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,104 Likes: 1,560 Liked 1,783 Times in 406 Posts	Re: pushrod size The current prevailing theory, which I subscribe to, is that you cannot make a pushrod too stiff. If you can get a 7/16" x 0.165" wall pushrod in it, that's what I'd put in it. We all run insane cam profiles and turn them ridiculous RPM, using monster valvesprings. That calls for all the pushrod you can get, to reduce or eliminate the tendency of the pushrod to act like a spring. You only want one spring in your valvetrain, the one that holds the valve shut. __________________ Alan Roehrich 212A G/S

05-22-2012, 09:03 AM	#4
buzzinhalfdozen Senior Member Join Date: Sep 2006 Location: Bellevue Ohio Posts: 984 Likes: 0 Liked 11 Times in 8 Posts	Re: pushrod size Straight 1/2in. on the exhaust. 1/2-7/16 taper on the intake both .165 wall. Agree bigger, stiffer is better. Joe __________________ Joe Buchanan SS/BX 3117

05-24-2012, 08:59 PM	#5
Weekend Racer Junior Member Join Date: Feb 2003 Location: P.Q. Posts: 68 Likes: 1 Liked 1 Time in 1 Post	Re: pushrod size Thanks ! for your good advise.