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#1
01-07-2008, 12:19 AM
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Probe SRS piston weights
Just recieved Probe SRS pistons from PPR. They are 455 +.020, or 4.17" I weighed them and thought I'd post the results. They are measured in grams. First set of numbers are the pistons, and the second are the pistons and pins. First piston # matches the first combo #, 2nd piston# matches the second combo # etc.
Pistons: 503.7, 503.6, 503.6, 502.6, 501.2, 503.4, 504.0, 503.1 Piston and Pin: 646.1, 646.1, 646.1, 645.1, 643.7, 645.7, 646.4, 645.5 Anything else anyone wants to know, these will be going off to the machine shop in a couple of days. Like I said for the rods, I don't have much experience with these, but they look like really nice pieces. Thanks Ace. Can anyone tell me what stock pistons/pins weigh, and maybe TRW's. |
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#2
03-18-2008, 10:39 AM
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I did a search to see if anyone had posted SRS piston weights and I found this thread,so I'll just add to it,for anyone who does a search in the future.
These are the weights from my SRS 400 + .030 (4.15") pistons. 521.0 521.4 520.8 521.5 521.9 521.0 521.3 521.3 Weights are in grams,without pins. Pins ranged from a 142.4 gram low to 142.8 high. Thanks "Ace"! 
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 71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs. ‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears. |
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#3
03-18-2008, 11:42 AM
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i would love to see a chart of piston weights. press and floating with prices too. it makes it easier to shop for them...i know ross's are around 435...trw's are around 730 i think...just a guess though...
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'74 formula 400, w/shaker (3 scoops) black deluxe interior, '70 406 balanced assembly, .30 trw slugs, moly rings, 4x heads 2.11/1.77 stainless valves, ra 4 cam, e-rpm intake, holley 750 vac. sec, msd hei, hooker headers w/ dual 3'' flowmaster 50 series ending at axle, t400 w/ GM6 convertor, transgo shift kit, b&m starshifter, 3.08 gears, centerlines, 265/50-15 bfg's rear and 235/60-15 front...yes im over cammed but it is still very fun... |
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#4
03-18-2008, 05:01 PM
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Most TRWs are right at 600 gms less pin.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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