Push rod

Top452 · Post by **Top452** » Sun Oct 19, 2014 11:18 am

Whats the best 5/16 with.080 wall for a 625hp 406 shaft rocker sbc? They are 7.900 in length.
Thanks

dirtracr5 · Post by **dirtracr5** » Sun Oct 19, 2014 12:39 pm

I prefer trend. I also prefer nothing smaller than 3/8. If you can make bigger pushrods fit, do it.

needforspeed66gt · Post by **needforspeed66gt** » Sun Oct 19, 2014 12:59 pm

I use Smith Brothers...and a .080" 5/16 rod is not rigid enough for that application in that length...Call Smith Bros with your spring pressures, RPM, and length and they can tell you what is needed.

Alaskaracer · Post by **Alaskaracer** » Sun Oct 19, 2014 1:10 pm

I agree, I'd go with larger, 3/8" at a minimum, thickest wall available. Preferably go with 7/16" if you have the room.

Trend, Smith Brothers, Manton (my preference), all very good.

stokerboats · Post by **stokerboats** » Sun Oct 19, 2014 1:17 pm

I like Manton, it's a stout product but not cheap.

bigjoe1 · Post by **bigjoe1** » Sun Oct 19, 2014 1:58 pm

Bigger diameter push rods are WAY OVER RATED

JOE SHERMAN RACING

Warp Speed · Post by **Warp Speed** » Sun Oct 19, 2014 2:48 pm

bigjoe1 wrote:Bigger diameter push rods are WAY OVER RATED

JOE SHERMAN RACING

wyrmrider · Post by **wyrmrider** » Sun Oct 19, 2014 2:52 pm

not according to my girlfriend

Cubic_Cleveland · Post by **Cubic_Cleveland** » Mon Oct 20, 2014 6:53 pm

wyrmrider wrote:not according to my girlfriend

That deserves two!

bigjoe1 · Post by **bigjoe1** » Mon Oct 20, 2014 7:50 pm

I have actually had a guy call me that spent 300 dollars and lots of work to replace his 5/16 dia, o80 wall, with some 3/8 dia, 165 wall to tell me his car slowed down at the drag strip. I myself have made a switch from 6/16 to 3/8 on the dyn and got absolutely NOTHING as far as more horsepower is concerned-- I only do it on very high RPM, serious race engines

JOE SHERMAN RACING

Rizzle · Post by **Rizzle** » Mon Oct 20, 2014 7:57 pm

bigjoe1 wrote: I myself have made a switch from 6/16 to 3/8 on the dyn and got absolutely NOTHING as far as more horsepower is concerned.

JOE SHERMAN RACING

Just to pick on you a little, if you switched 6/16th pushrods for 3/8th ones I'd not expect a change either

I'm sure you meant 5/16th but that was too good to pass up.

dirtracr5 · Post by **dirtracr5** » Mon Oct 20, 2014 8:34 pm

bigjoe1 wrote:Bigger diameter push rods are WAY OVER RATED

JOE SHERMAN RACING

Somebody unplug this guys computer...PLEASE!!!!

Warp Speed · Post by **Warp Speed** » Mon Oct 20, 2014 8:34 pm

bigjoe1 wrote:I have actually had a guy call me that spent 300 dollars and lots of work to replace his 5/16 dia, o80 wall, with some 3/8 dia, 165 wall to tell me his car slowed down at the drag strip. I myself have made a switch from 6/16 to 3/8 on the dyn and got absolutely NOTHING as far as more horsepower is concerned-- I only do it on very high RPM, serious race engines

JOE SHERMAN RACING

If he slowed down, or you see no gains, it's because the rest of the system isn't up to snuff either.

Warp Speed · Post by **Warp Speed** » Mon Oct 20, 2014 8:35 pm

dirtracr5 wrote:
bigjoe1 wrote:Bigger diameter push rods are WAY OVER RATED

JOE SHERMAN RACING
Somebody unplug this guys computer...PLEASE!!!!

mjtorb · Post by **mjtorb** » Tue Oct 21, 2014 6:35 pm

manley pushrods seems to be a good choice for the money. running a 406 sb chevy ( drag race ) with an aggressive solid roller cam, .670 lift , shifting at 7400 rpms. so far no issues with the 5/16 .080 wall pushrods.

Don Terrill’s Speed-Talk

Push rod

Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod

Re: Push rod