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zac · 06-30-2018, 09:12 AM

Somebody gave me the short block from an ‘89 Iroc-Z Camaro. 638 2 bolt block, has fuel pump boss and is drilled for a pushrod. The cam has the fuel pump eccentric, obviously has never been used. Checked it with v blocks and dial indicator, appears to be #10066049 207/213, .415/.430@1.5. Appears to be correct for ‘89. Everything appears to be in good serviceable condition, it occurs that I could put 1.52 or 1.6 rockers on some good 462 heads I have and give it a shot, mostly for laughs. But I’m going to run a mechanical pump and I see nothing but conflicting info about the pushrod I need to use. It ranges from must use a bronze or roller tip to run a regular stock one. It seems to come down to what is the cam made of and what was the GM engineers’ intent? I did grab the distributor gear off a low perf ‘92 RS camaro but it looks like any other gear.

Any ideas?

06-30-2018, 09:12 AM	#1
zac Registered User Join Date: Jul 2008 Location: louisville, ky Posts: 502	Fuel Pump Pushrod with OEM Roller Cam Somebody gave me the short block from an ‘89 Iroc-Z Camaro. 638 2 bolt block, has fuel pump boss and is drilled for a pushrod. The cam has the fuel pump eccentric, obviously has never been used. Checked it with v blocks and dial indicator, appears to be #10066049 207/213, .415/.430@1.5. Appears to be correct for ‘89. Everything appears to be in good serviceable condition, it occurs that I could put 1.52 or 1.6 rockers on some good 462 heads I have and give it a shot, mostly for laughs. But I’m going to run a mechanical pump and I see nothing but conflicting info about the pushrod I need to use. It ranges from must use a bronze or roller tip to run a regular stock one. It seems to come down to what is the cam made of and what was the GM engineers’ intent? I did grab the distributor gear off a low perf ‘92 RS camaro but it looks like any other gear. Any ideas?