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Old 11-09-2026, 05:36 PM   #706
townsend
 
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Join Date: Jul 2011
Location: harmony, nj (phillipsburg)
Posts: 550
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Hoop does great work! hes only 15 minutes over the bridge in pa from Avantor dave. 3rd exit off rt 22 in pa. just saw him saturday, wish i would have seen this i would have brought it up to him.

as for increasing rocker ratio, need to be mindful of piston to valve clearance, as well as if you increase valve diameter, not all aftermarket pistons have the clearance for larger valves (ran into that once with srp pistons)

i was gonna text you in a little bit, which actually goes into rocker ratio/valve float etc with something i discovered saturday night that i thought was shrapnel in my blown up 381 from the broken plug.

note the shiny spot at the edge of the valve relief on the exhaust valve pocket.

moving to 1.6 exhaust rockers from 1.55 on my build/valve float caused some damage. 6 out of 8 exhaust valves kissed the piston. explains why i was rattling exhaust seals off. cant believe it went 9.64 like this.

this was my fault since i assembled the motor. whoops
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1994 Firebird Formula - Injuneer's car - NEW PB 9.64 @ 139.8mph
1994 Camaro Vert - Heads/Cam show cruiser
Wrench/driver 94 Camaro Ellwein 385/D1SC/CPT 4l60e/9" slow pile 10.16 @ 138mph
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