AFR users I need some help - Team Camaro Tech
Engine General Engine Discussion.

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post #1 of 3 (permalink) Old Jul 23rd, 03, 07:48 AM Thread Starter
Senior Tech
Join Date: Mar 2001
Location: Niceville Fl
Posts: 1,070

I am in the process of getting a set of AFR 195's and I need to find out if i can use a stock pushrod or do i have to buy special length pushrods. I have never bolted heads on be fore and don't know how to check for correct length. So my question is did u have to install longer or shorter rods? How do i find the correct lenght rod?

69 Camaro RS, 383ci,10.5-1 AFR 195's ported, Comp 286HR, 4340 forged Crank & Rods, JE Pistons, RPM Airgap, Holley 750 HP carb, 350 turbo w/ shift kit, 3000 Coan, Be cool, caltracs,12bolt 355 eaton posi..Best E.T. 12.22 @ 112

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post #2 of 3 (permalink) Old Jul 23rd, 03, 09:57 AM
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Join Date: Jun 2001
Location: Sacramento, CA
Posts: 413

Here is CHP's way:


Basically, you need a head on the engine, with a rocker in place. Then, using an adjustable pushrod (pushrod length checker), insert it into the engine as normal, and adjust the length until you find proper geometry. This Includes what the article in CHP says, like making sure the rocker tip is on the right spot of a closed valve.

1968 Camaro
355, Comp XR236R Solid Roller, Air Gap, Pro Systems Double Pumper,
TKO, 10lb flywheel, 3.73 rear, Global West Suspension, Corvette C5 brakes
3098 lbs (and falling!)
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post #3 of 3 (permalink) Old Jul 23rd, 03, 06:56 PM
Join Date: Jul 2003
Location: Little Rock, AR
Posts: 1

I just helped my dad put a set of afr heads on his car. He did have to go with a longer push rod on his, but i would check for yourself just to be certain. He had to go with a 2 hundredthousandths longer one. Here's how to go about checking.....With the head bolted to the block, take a magic marker and color the valve tip solid. Install a solid lifter, on the valve your checking, if running hydralic lifters. Put your rocker arm on and tighten it to zero lash. turn the motor over until it has made a complete stroke for the cylinder that your checking. Take the rocker arm back off, and see where the rocker arm has rubbed off the marker. Once you have it in the middle of the valve stem you got it. If its closer to the lifter valley you need to go longer. If its closer to the header you need a shorter one...Good luck
Let us know how it turns out. [img]graemlins/thumbsup.gif[/img]
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