Paul Holmes

I have to tighten a couple rocker arms due to ticking lifters. And the rocker arms which are loose are just plane too loose. Any way do you adjust the (intake as the exhaust goes down and the exhaust as the intake goes up), or (intake as the exhaust goes up and exhaust as the intake goes down)? Please help. I have already got the valve covers off and a lot of other stuff off right now. I don't want to go through this again untill at least next year when I get the camaro ready for the summer time.

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91RS-STROKER

Dan87IROC-Z

I'll send you the valve lash adjustment article that was sent to me.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

AlkyIROC

You could adjust all the valves in 2 rotations or the crank.

With #1 at TDC adjust 1, 3, 4, 8 exhaust and 1, 2, 5, 7 intake
With #6 at TDC adjust 2, 5, 6, 7 exhaust and 3, 4, 6, 8 intake.

Best way to adjust them is with a feeler gauge. Smallest size possible. Usually .0015". Adjust the rockers so that there is some drag on the feeler gausge then tighten the rocker nut 1/2 turn more. This sets the preload to about .020 to .040

If your lifters are ticking then you either have a collapsed lifter or a cam lobe is worn off. Having to re-adjust hydraulic lifters means there is usually something else wrong. Rarly does the adjusting nut back off.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
461 Big Block installed and ready for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

Paul Holmes

Thanks guys! I think I finally got the rocker arms adjusted, but to be on the safe side I think I am going to look a little deeper. I think that maybe my cam might have a couple worn down lobes. And being that I spent a sh-- load of money on a stroker I think it might be wise to pull things apart and do a rebuild so I can race this camaro safely this summer! After I readjusted the rocker arms, the ticking went away but the car idles to high after hitting the gas a little. I think there is a blown gasket some where. I wish this was an easy fix er up er, but I am playing it safe so I can race this summer!

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91RS-STROKER