Pushrod and Power

Speedy Goomba · Post by **Speedy Goomba** » Thu Sep 23, 2004 12:36 pm

I'm currently using Comp 5/16" hi-tech .080" wall pushrods in a 6200rpm Small block with a flat tappet cam.

Has anyone here seen power gains through switching to a heavier pushrod, IE the Comp 3/8" Hi-tech .080" wall pushrods?

Guest · Post by **Guest** » Thu Sep 23, 2004 2:31 pm

Yes,due to deflection with some lobe profiles, large diameter pushrods are coming back and being use more frequently. I know of a large CID SBC that picked up 40HP with some single taper rods. Also our sales on 3/8" guideplates has grown due to this trend.

Chris

Speedy Goomba · Post by **Speedy Goomba** » Thu Sep 23, 2004 4:44 pm

Cool, might be a worthwhile comparison for next season.

Harbinger · Post by **Harbinger** » Thu Sep 23, 2004 8:27 pm

The pushrod is on the slow-side of the valvetrain. You want stiffness above anything else, especially gotta compensate for that in the longer length rods.

If you can't/don't run a guideplate then look at a taper rod from Manton. They're worth power in the right situation.

Regards,
Chuck

GrannySShifting · Post by **GrannySShifting** » Tue Oct 12, 2004 12:20 pm

What about ffor an LS1 application, pedastol rockers, pushord holes arent very large in the heads.

3/8 pushrods, or somethign from Manton may help? hydraulic rollers, 7100 rpm