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Ross pistons for big block #587381 01/19/10 09:49 AM 01/19/10 09:49 AM
Joined: Mar 2006 Posts: 1,402 State of Corruption camdog440 OP pro stock
camdog440 OP pro stock Joined: Mar 2006 Posts: 1,402 State of Corruption	I have a set of Ross shelf pistons, part number 80762. Will they work with 2.25 valves... or will they need to be fly-cut? Thanks

Re: Ross pistons for big block [Re: camdog440] #587382 01/19/10 10:18 AM 01/19/10 10:18 AM
Joined: Apr 2006 Posts: 3,675 Akron, Ohio U.S.A. roadhazard master
roadhazard master Joined: Apr 2006 Posts: 3,675 Akron, Ohio U.S.A.	I run the Ross 99524 flat tops and they have clearance for the 2.250 valve around the pocket but you will have to check piston to valve for the cam spec's that you are using. good luck

Re: Ross pistons for big block [Re: roadhazard] #587383 01/19/10 10:29 AM 01/19/10 10:29 AM
Joined: Jan 2003 Posts: 21,129 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,129 Niles , Ohio	I agree gave them checked.My Ross domes will clear over .700 lift.I dont run 2.25s on my 440 though.Rocky Chrysler Firepower

Re: Ross pistons for big block [Re: camdog440] #587384 01/19/10 11:57 AM 01/19/10 11:57 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	Call Ross and I'm sure their Tech guys can tell you how big the cutter is that was used on that particular piston #.

Re: Ross pistons for big block [Re: BradH] #587385 01/19/10 06:24 PM 01/19/10 06:24 PM
Joined: Aug 2003 Posts: 4,766 On the parachute mount N n20mstr master
n20mstr master N Joined: Aug 2003 Posts: 4,766 On the parachute mount	i ran a Ross shelf piston in my BB, they were touching in the radius of the valve notch, best to have them opened up another .050 ....BAD A$$ STREET CAR.....

Re: Ross pistons for big block [Re: camdog440] #587386 01/19/10 07:03 PM 01/19/10 07:03 PM
Joined: Nov 2007 Posts: 277 MN W Willie68coronet enthusiast
Willie68coronet enthusiast W Joined: Nov 2007 Posts: 277 MN	Quote: I have a set of Ross shelf pistons, part number 80762. Will they work with 2.25 valves... or will they need to be fly-cut? Thanks I asked ross in a e-mail pretty much the same question but was a different part number (99539). Their response was: "The pistons are cut at 2.300 we recommend at least .050 radial clearance around the valve. You probably could get away with a 2.250 but it will be tight. You will have to clay the top of the piston and check the clearance" Last edited by willie_68coronet; 01/19/10 10:18 PM. '68 Coronet 500 w/ Indy EZ-1 headed 446, 727 trans, 9" rear First day at the track with SUV street tires and no traction: 1.688 60', 7.24 @ 101.79 in the 1/8 mile Great customer service from: DominicThumper Carbs, B3 racing engines, Porter Racing Engines, A-1 torque converter's, Quick Performance, Racer Brown Cams, R&R Performance, Manton pushrods

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