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Old 04-14-2006, 06:24   #1 (permalink)
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Edelbrock Performer RPM 5.0L short block valve clearance

Just wondering if anyone could let me know if Perf. RPM heads with 2.02 intake valves are likely to clear the pistons in a Ford Racing 302ci / 5.0L ''Production'' Short Block Engine Assembly (as found at Jegs ) as I can get a set fairly inexpensively. The piston notches look fairly sizeable. I cant test P/V clearance as I havent bought the heads yet.

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Old 04-23-2006, 18:37   #2 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

Of course how much lift you go with on the cam comes into play as well, but for the most part the only 5.0L engine that has any valve clearance issues is the 1986 engine with stock pistons. You should be fine but of course check clearance when assembling the engine.
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Old 04-29-2006, 06:55   #3 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

Clay the piston and check..
No tighter than .080
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Old 04-29-2006, 07:46   #4 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

You should be clear. As was stated, the 1986 didn't have valve reliefs and the Performer RPM heads are designed so they'll even fit on stock engines. I'd still recommend you check for yourself before buttoning everything together, though.
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Old 05-06-2006, 17:33   #5 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

I thought the only head design with 2.02 valves that did'nt need bigger knotches was the Trickflows !
Give it a clearance check anyway but, I think you will probable need to get your slugs fly cut ?
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Old 05-06-2006, 19:26   #6 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

The TrickFlows are the ones that DO need larger notches.
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Old 05-06-2006, 19:50   #7 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

Freshmeat - youve got it backwards. TF Twisted wedge do not need most 5.0 notches to be flycut with 2.02s. AFRs and Edelbrocks with 2.02s DO need extra valve clearance. This is according to the websites of the manufacturers.
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Old 05-06-2006, 21:29   #8 (permalink)
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Re: Edelbrock Performer RPM 5.0L short block valve clearance

Oh. Sorry.

































I guess I should stop offering advice when I'm intoxicated, then. Have a good day.
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