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Old Aug 20th, 05, 3:08 AM
sschevellefan sschevellefan is offline
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Default 454 piston ID help needed

My neighbor got a 454 from a guy he knows and the pistons say 7051P. The guy he got it from knows nothng about the motor and I could`nt find that number anywhere. They do have domes on them and I don`t know if they are cast of forged. Any help would be great.
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Old Aug 20th, 05, 4:28 AM
David Bates David Bates is offline
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Default Re: 454 piston ID help needed

7051P looks like an OLD SpeedPro number. Sorry, but I don't have an old catalog or cross reference.
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Old Aug 20th, 05, 4:37 AM
GRN69CHV GRN69CHV is offline
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Default Re: 454 piston ID help needed

4 digits and letter "P", most likely an old Speed Pro #. CHecked the NHRA & IHRA acceptable piston list - was not listed on either. For comparison, if the dome extends all the way to the sides of the piston, it is orginally for closed chambers, if the dome is inset about 3/16", it was for open chamber heads.. From there you pretty much had 4 basic dome profiles to deal with .100 = 12 - 13 CC, .220 = 22 - 25 CC and .330 = 33 CC range and maybe the real high dome stuff that was in the 40+ CC range.
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Old Aug 20th, 05, 8:38 AM
GOSFAST GOSFAST is offline
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Default Re: 454 piston ID help needed

Quote:
Originally Posted by sschevellefan
My neighbor got a 454 from a guy he knows and the pistons say 7051P. The guy he got it from knows nothng about the motor and I couldn't find that number anywhere. They do have domes on them and I don`t know if they are cast of forged. Any help would be great.
Have 2 sets (new) in inventory #7051P(+030). This is a SBC 350 LT-1 (11:1) replacement forged/pressed-pin part. Thanks, Gary in N.Y.
PS. Possible it's by another vendor with the identical number, but the above number is Speed-Pro's original. The following numbers are for BB's, (396's) 7021P, (427's) 7011P, 7038P, & 7041PA, (454's) 7053P, 7060P, 7040PA, & 7039P.
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Old Aug 20th, 05, 2:01 PM
sschevellefan sschevellefan is offline
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Default Re: 454 piston ID help needed

Quote:
Originally Posted by GOSFAST
Have 2 sets (new) in inventory #7051P(+030). This is a SBC 350 LT-1 (11:1) replacement forged/pressed-pin part. Thanks, Gary in N.Y.
PS. Possible it's by another vendor with the identical number, but the above number is Speed-Pro's original. The following numbers are for BB's, (396's) 7021P, (427's) 7011P, 7038P, & 7041PA, (454's) 7053P, 7060P, 7040PA, & 7039P.
it must be the 7053P becasue this isn`t a 350. my mistake.
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