Speed Pro Forged Pistons
01-11-2009, 09:04 AM
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Car: 83 Trans Am / 96 Jeep XJ
Engine: 355 / 4.0 I6
Transmission: TH350 / Auto
Axle/Gears: 3.23 10-bolt / 4wd
Re: Speed Pro Forged Pistons
I bought some, but have yet to build my motor, the quality seems mostly there.
01-11-2009, 02:13 PM
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Car: 1989 IROC Camaro
Engine: Stealth Ram 355
Transmission: WC T-5
Axle/Gears: Torsion 3.42 Posi
Re: Speed Pro Forged Pistons
Been using Speed Pro for years! I have them in my 355 forged with coated skirt look good..
01-13-2009, 12:44 AM
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Car: 1982 Camaro Z28 w/ RS groundfx
Engine: 350
Transmission: Tranzparts 700r4
Axle/Gears: 3.23's
Re: Speed Pro Forged Pistons
Alright, cool. Glad to hear the positive reviews... I'm looking at purchasing a rebuild kit from summit with these pistons and soon am going to experiment with some boost 
01-13-2009, 08:28 AM
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Car: 91RS, 91RS
Engine: 305TBI, 3.1MP
Transmission: WCT5, TH700
Re: Speed Pro Forged Pistons
That's what just went into the all forged 355 I just built.
Scatt Billit/balanced/knife edged crank, Eagle forged H-Beams, and Speed Pro "power forged" pistons. As above though, she has yet to be fired. While the large Hyd-Roller bump stick is in place, I've yet to decide on heads...
Good Luck,
Max
Scatt Billit/balanced/knife edged crank, Eagle forged H-Beams, and Speed Pro "power forged" pistons. As above though, she has yet to be fired. While the large Hyd-Roller bump stick is in place, I've yet to decide on heads...
Good Luck,
Max
01-13-2009, 09:22 AM
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Car: 1990
Engine: 305
Transmission: 700r4
Axle/Gears: stock
Re: Speed Pro Forged Pistons
they are cheap becasue they are made in china, and china if famous for zip quality control. dont assume that they are good because they are shinney and new.
china will pass almost anythng that is cast through its alleged quality control system. there quality control is "if we can sell it - its ok".
you are going to be running at high temps and hi rpms, so their policcy of replacing the bad piston will do you no good if you have to replace the entire engine, or the crank, or the piston fails and you run a rod up into you new heads.
spend the money to check them first.
you can ultra sound them for flaws.
Last edited by tony_cogliandro; 01-13-2009 at 09:43 AM.
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01-13-2009, 11:32 PM
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Car: SOLD IT. Mopar guy only now.
Engine: gone
Transmission: gone
Axle/Gears: gone
Re: Speed Pro Forged Pistons
i have 30k on my rebuild with forged speed pro pistons. alls good and no noise. just make sure the machine shop fits the pistons to the bores when they machine, if they wanna bore it without the piston they are not a good machine shop because they are assuming the piston is going to be proper.
01-14-2009, 12:07 AM
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Car: 1989 IROC Camaro
Engine: Stealth Ram 355
Transmission: WC T-5
Axle/Gears: Torsion 3.42 Posi
Re: Speed Pro Forged Pistons
UnderCover89TBI has a good point!! If your switching from stock pistons, crank, and or crank. Have everything balanced also to insure trouble free service..
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