[QUOTE]Originally posted by Daniel_Jones:
I'd warn you about the stock valves but I know you already know.
The valve situation is always on my mind. I have removed a dropped valve head from a ruined mtor once or twice in my day. My desire is to pull the motor & do some "maintenance" this winter. But time is getting away from me. This would not be a "build up" but just some stuff like SPS rod bolts, flat top pistons & new rings, Clevite 77 bearings, advance the cam 4 degrees with a Romac timing set, replace the balancer, install lifter bore bushings and cam bearing restrictors, swap the heads for quench heads fitted with new valves, retainers & keepers. I have 90% of the parts in the garage (shrine)
I had a lot of trouble with the phone
monkeys at Comp (before the referred me to Hadley) and was expecting more of
the same at Crane. I asked the Crane phone tech a couple of questions he
couldn't answer so he quickly referred me to his product manager. I told him
I wanted to run a hydraulic roller cam in an aluminum Fontana block and the
first thing he asked was "Is this by any chance for a Pantera?" Hmmm, maybe
this guy might know what he's talking about.
Isn't that always refreshing?
The specs ended up as:
HR-238/365 intake lobe
HR-242/372 exhaust lobe
238/242 degress duration @ 0.050" lift (300/304 advertised)
0.621"/0.595" lift (with 1.7:1/1.6:1 ratio rockers)
110 LSA
Was the "short" exhaust lift dictated by the flow characteristics of your C302 heads?
Does the 4300D use a unique power valve? I think finding a power valve that
matches your cam might be difficult, depending upon the cam overlap.
Well, my cam will be quite mild, with a lot of vacuum at idle. I have used 4300D carbs on what I considered strong motors back in my day. With smog regs what they were in California back then, it was a necessity. I have a couple of 750 dp Holleys on the shelf to fall back on.
Thanks for contributing Dan, it's nice having you on the DTBB, I admire your engineer's eye for detail. Will you be at Vegas this year, I would love to finally have the opportunity to meet you in person?
Your friend on the DTBB, George
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