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Are these pistons any good?Anyone use them in a blown motor?

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Old Mar 26, 2004 | 02:06 PM
  #1  
IROCZ1989's Avatar
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Joined: Dec 2002
Posts: 1,391
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From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Are these pistons any good?Anyone use them in a blown motor?

http://store.summitracing.com/partde...TRW%2DL2441F30


If I dont buy a the motor Im going to build one.

Scat I beam 4340 rods scews caps $219
and Gm 1053 steel crank or Scat 4340 crank both same price.Thanks
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Old Mar 26, 2004 | 02:12 PM
  #2  
flrtin1's Avatar
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Joined: Jan 2004
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From: Western Ky
Car: Z/28..39 Plymouth truck in progress
Engine: S/B
Transmission: Manual
I am putting a 8-71/355 motor together right now using those exact pistons link here I have had a set of TRW's in my motor since 86 (had as much as 15lbs. boost) and built a 6-71/305 with the Speed Pro's three years ago for another friend and have had no problems (other than my own fault) with them.
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Old Mar 26, 2004 | 03:25 PM
  #3  
IROCZ1989's Avatar
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Joined: Dec 2002
Posts: 1,391
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From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Thanks for the reply. What did you have for bottom end parts?Anything above stock?Im considering a new crank and rods to go along your imput please.
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Old Mar 26, 2004 | 03:29 PM
  #4  
IROCZ1989's Avatar
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Joined: Dec 2002
Posts: 1,391
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From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
flrtin1,bad a$$ car you have there. Very nice. Does it still have the stock bottom end besides the pistons?Nice ride.
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Old Mar 26, 2004 | 03:49 PM
  #5  
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Joined: Jan 2004
Posts: 1,206
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From: Western Ky
Car: Z/28..39 Plymouth truck in progress
Engine: S/B
Transmission: Manual
Thanks.
The rods are the original 85 rods they have been checked over the years several times for the beam and the big and small ends with no problems. The car was not driven from 93 to 00 and when I got it out in 00 I had the belt to tight and it snapped the front 2" of the crank off (original 85 crank and 40k blown miles) so the crank was replaced in 00 with a .010/.010 factory crank and I am at around 550 hp with no problems

Edit:The last 6-71/305 I built has over 10k with 9lbs. boost on a 95 factory crank not turned but polished .001/.001 with no problems also

Last edited by flrtin1; Mar 26, 2004 at 03:56 PM.
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