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July 14th, 2008, 12:31 PM
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Turbo Pistons what brand is best
Machine shop said federal mobil or silver light turbo pistons is what that offer. one of these ok or should i go with something else? i am going to run 25 pounds of boost with alky
    
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July 14th, 2008, 12:45 PM
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TRWs with lightweight pins( good stock replacement) , JE$$$, Diamond$$$, Weisco$$$, & CP$$$, Havent ever heard anything good about silverlites.
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87 Stage2 in the works!
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July 14th, 2008, 03:42 PM
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Have been very happy with my TRW .030 stock replacements. Very strong casting, a little on the heavy side though. I'm running 25psi, 93+alky.
If you wanna spend the big money then go with the others suggested above.
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Sean Thomas 1986 GN Astroroof Comp Cam 212/218, .463/.471, 110LSA, billet center mains, TRW pistons, stock crank/rods, Ported stock heads/intake, ARP studs throughout, PTE DBB 6262 S cover, RJC pp, GBP 3.5" DP w/3.5" dump pipe, Z06 3.75" MAF, RJC 4" intake, KN filter, dutt-neck IC, TT alky chip, Razor's Alky, Walbro 340, Acufab FP reg, 50# MSD inj, Iceman UCA/LCA's, Scanmaster, trans +, Hooker 2.5" duals, BH TH200-4R, WCC 3000 Stall LO. 
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July 14th, 2008, 04:26 PM
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I am using K and L in claycomo but they are now called ClayCo Rebuilders in Clay Co. MO
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July 15th, 2008, 12:02 AM
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I like Diamond alot, thats what I've got. They've got a really good alloy.
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"Asuka" (pronounced Oska) 85 Grand National -Original Owner, 87 drivetrain - Bored .40 over, Forged Diamond Pistons, Forged Eagle Rods, Comp 218/212 Roller Cam, Ported 8445 Heads with Port Matched Intake, Stainless ATR style headers, 3" GN1Performance DP with external wastegate, Test Pipe, 2.5" Catback Dual Exhaust, 60lb Injectors, Razor's Progressive Alky Kit, TurboTweak 6.0 Wideband chip, Walbro 340 Fuel Pump and hotwire, Adj Fuel Pressure Regulator, LT1 MAF w/ Translator, F-Body Radiator with Ramchargers Dual Fans, TE44 turbo, 23 Row Gbodyparts SLIC, RJC PP, Brian Hofer Trans w/ brake, Edge 10" 3000 Stall Torque Converter
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July 15th, 2008, 12:52 AM
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Do you know Quick6'n'KC or turbov6joe??? I'm sure they could help you a lot on the local machine shops to have a turbo motor done. I know they used(and may still be using) K&M out near KCIR. Get in touch with one of them.
Unless the shop you're using knows the particulars of doing one of these GN/TR motors, and/or you can provide them with the specs and if they actually listen to you about the clearances, then I would be leery about having them do it. Even suggesting using Silvo-Lites is throwing up a red flag, IMO... Don't go any more than .030 oversize on the bores...
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Jim F fjm568@swbell.net 85 GN 87 T 66 Skylark
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July 15th, 2008, 10:26 AM
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Federal Mogul and TRW are the same now.
The TRW/Federal Mogul power forged pistons are a great value for the quality of the piston. Just might want to get lighter pins and a rebalance job while your in there. Don't let these rebuilders do a chevy rebuild; make sure they stick to Buick clearance specs and tell'em I said so....  
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Steve- 1987 GN, Astroroof, GNX dash, 109 3.8, .030 TRW forged, TE-62, CXR fmic, G Body DP, 212/212 cam, 60-65 Siemens inj, TT chip, LS1 MAF, port matched intake and heads, Razor's meth. inj. CK Trans, Pats Conv, Metco LCA's Monitored by:PLX WB, EGT, SM & DS 11.8 @ 117 w/ 4.1 -(R.I.P. 7/25/08) 1987 Gray Regal T-- Low Options: Bucket seats w/ console, G80, AM/FM, Pwr windows & Ant., thats it! LS1 MAF, 32lb inj, Chip, mostly stock and staying that way.... 2001 Jeep Cherokee 4.0 I6 4x4 K&N  Daily Driver Out of F bodies..for good.
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July 15th, 2008, 12:44 PM
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What brand has the lightning bolt logo stamped on top? Don't want to hijack, but while everyone has pistons on their mind..........
Steve
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'84 Regal w/ '87 combo- TE-60, 009's,ATR headers/DP,Ebay FMIC w/homemade pipes, Razor's alky kit, Autometers everywhere, 375rwhp/420rwtq @18 psi and no tune. New best- 11.34 @ 120. Guess it's time for a roll bar. New addition: 3400 9/11 (I think I'm gonna break something soon!) New toy: 2007 Yamaha Rhino 660
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July 15th, 2008, 02:49 PM
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Thanks, I thought Speed-Pro sounded right. Didn't know they were all the same now. Do you know when they merged together, it might help me date my engine build.
Steve
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'84 Regal w/ '87 combo- TE-60, 009's,ATR headers/DP,Ebay FMIC w/homemade pipes, Razor's alky kit, Autometers everywhere, 375rwhp/420rwtq @18 psi and no tune. New best- 11.34 @ 120. Guess it's time for a roll bar. New addition: 3400 9/11 (I think I'm gonna break something soon!) New toy: 2007 Yamaha Rhino 660
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July 16th, 2008, 11:47 PM
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Use the Speed-Pro / Federal Mogul part # L2481F pistons. They are serving me well. +2 on the lightweight wrist pins. It really knocks the total weight back down to a repectable number.
They merged quite a few years ago. I don't remember exactly when though...
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1987 GN Astroroof Precision 6131BB, BGC 23 row stretch IC, 60lb inj., 212/212 Comp roller cam, T&D rollers, TT Akly chip, Razor's Alky kit, Billet main caps, Speed-Pro forged pistons, port & polished heads & intake, 70mm T/B, Edge 10" 3000 stall L/U, trans built by mikestertwo with PTS parts, 3" THDP, Poston headers, PTS aluminum radiator, etc., etc.
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