Pushrod clearance

70MC · Post by **70MC** » Thu Jun 09, 2005 6:48 pm

What would be the minimum clearance the pushrod could have as it passed through the cylinder head near the intake ports. This is a SBC with 23 degree heads, and 3/8 pushrods.

ALKYBURNER · Post by **ALKYBURNER** » Thu Jun 09, 2005 8:01 pm

Look at Mantons website his catalog says .010 pushrod to any object port etc. is plunty it acts like a guide he told me. What wall thickness are they, I have had good luck with IRC performance pushrods out of Washington state.

8SECNOVA · Post by **8SECNOVA** » Thu Jun 09, 2005 8:59 pm

.010 should be plenty, though it sounds close. Even if the pushrod deflected, I don't think it would flex more than .010 in the area which it would rub. Just my opinion.

70MC · Post by **70MC** » Thu Jun 09, 2005 10:12 pm

ALKYBURNER wrote:Look at Mantons website his catalog says .010 pushrod to any object port etc. is plunty it acts like a guide he told me. What wall thickness are they, I have had good luck with IRC performance pushrods out of Washington state.

They are Trickflow pushrods from Summit and have a .080 wall thickness.
Thanks for helping guys.