pushrod slot - The 1947 - Present Chevrolet & GMC Truck Message Board Network

orange72 · 12-22-2003, 02:12 AM

ok guys ive got a question. me and my dad are doing an engine swap right now and ive got a point that i have a question. were pulling the engine out of my 72 and putting an engine in out of a 84 chevy. the question is is that the pushrod slot in the 84 seems to a have a lot my side to side play in it than my 72. also the 84s rocker arms look to have sorda a slot to keep them centered on the tip of the valve. but im not putting stock rocker arms on it. im putting comp cams magnum roller tip rockers in it which worked fine on my 72 but will they work ok on the 84. it seems with all that play from side to side that they would work there way off the valve and wear something out. anybody thats got any information would be greatly apreciated. oh and by the way the engine is a small block 350.

*rage'nrat638* · 12-22-2003, 02:15 AM

that happened to the 305 that was in my 85....the lifter would not stay on the valve tops....heads were junk.....

unless you change to 7/16 studs and go with push rod guides

orange72 · 12-22-2003, 02:20 AM

or go with stock rockers. but there not worn..it looks factory.

Tx Firefighter · 12-22-2003, 02:52 AM

It sounds like your rockers are the self-aligning type. Chevy went to them in later years. Your heads might have been changed.

They will have two nibs on each one to keep the rocker centered straight on the valve tip.

12-22-2003, 02:12 AM	#1
orange72 Registered User Join Date: Sep 2000 Location: huntington,texas,united states Posts: 399	pushrod slot ok guys ive got a question. me and my dad are doing an engine swap right now and ive got a point that i have a question. were pulling the engine out of my 72 and putting an engine in out of a 84 chevy. the question is is that the pushrod slot in the 84 seems to a have a lot my side to side play in it than my 72. also the 84s rocker arms look to have sorda a slot to keep them centered on the tip of the valve. but im not putting stock rocker arms on it. im putting comp cams magnum roller tip rockers in it which worked fine on my 72 but will they work ok on the 84. it seems with all that play from side to side that they would work there way off the valve and wear something out. anybody thats got any information would be greatly apreciated. oh and by the way the engine is a small block 350. __________________ 1972 chevy long bed. Currently under construction!! Bagged, 383/700r4.

12-22-2003, 02:20 AM	#3
orange72 Registered User Join Date: Sep 2000 Location: huntington,texas,united states Posts: 399	or go with stock rockers. but there not worn..it looks factory. __________________ 1972 chevy long bed. Currently under construction!! Bagged, 383/700r4.

12-22-2003, 02:52 AM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	It sounds like your rockers are the self-aligning type. Chevy went to them in later years. Your heads might have been changed. They will have two nibs on each one to keep the rocker centered straight on the valve tip. __________________ I'm on the Instagram- @Gearhead_Kevin

12-22-2003, 02:15 AM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	that happened to the 305 that was in my 85....the lifter would not stay on the valve tops....heads were junk..... unless you change to 7/16 studs and go with push rod guides



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.