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89Ultra1

08-21-2014 09:10 PM

Head & cam specs 502mag?

Does anyone know the head and cam specs on a 502mag?

SB	08-21-2014 09:55 PM

This is what I have listed for the hydraulic roller black Merc Mag Motors
Merc# 431-850478 / GM#12551622
.004 300*/ 300*
.006 288*/288*
.050” 225*/225*
.200” 125*/125*
Lift .483”/. 483”
ICL 109*
LSA 115.5*

Heads are open chamber rectangular port 2.19/ 1.88 valves

Young Performance

08-21-2014 10:20 PM

I have it listed at 225/225 @ .050. Not that's it a big difference. Not sure which is right.
Eddie

SB	08-21-2014 10:37 PM

So don't I. LOL. Read my specs again. it's all good.

Young Performance

08-21-2014 10:45 PM

224 or 225, it doesn't really matter. They are both small and should be placed in the proper location......the scrape barrel.lol

Wobble

08-21-2014 10:51 PM

It's all good. LOL

stimleck

08-22-2014 08:19 AM

Eddie Happy Belated!
Does the same recommendation apply if using stock thru hull exhaust?

Quote:

Originally Posted by Young Performance (Post 4175717)

224 or 225, it doesn't really matter. They are both small and should be placed in the proper location......the scrape barrel.lol

Young Performance

08-22-2014 08:53 AM

You can certainly go larger while still using the stock exhaust.
Eddie

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