.040 pistons for 350 blown application

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prostude
Posts: 46
Joined: Mon Apr 26, 2010 11:16 am
Location: Syracuse NY

.040 pistons for 350 blown application

#1 Post by prostude » Thu Jun 10, 2010 8:01 pm

found a set of .040 srp dish pistons for about 500 dollars
any other better pistons out there for about the same price
will these pistons hold up to like 16-18 psi of boost from a 6-71

rather not go with diamone or je that would run about 800
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.

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CDR Performance
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Joined: Tue Mar 02, 2010 7:41 pm
Location: Indianapolis, Indiana

Re: .040 pistons for 350 blown application

#2 Post by CDR Performance » Fri Jun 11, 2010 8:02 am

prostude wrote:found a set of .040 srp dish pistons for about 500 dollars
any other better pistons out there for about the same price
will these pistons hold up to like 16-18 psi of boost from a 6-71

rather not go with diamone or je that would run about 800
Do you have pics of the piston?
Skirt design and Ring Stack?
The SPR are not 2618 so running 2 bar on that piston is too much.
CDR PERFORMANCE
The Custom Engine Shop

Dart - Callies - BRC - Oliver - BME - Custom Cams - T&D - Trend - JGS - BorgWarner - SuperNatural - EV - CSU - C&S - BS3

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Moparious Maximus
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Location: Iowa

Re: .040 pistons for 350 blown application

#3 Post by Moparious Maximus » Fri Jun 11, 2010 8:26 am

If the pistons were designed to be in a NA motor I would not trust them with a blower even at low boost pressures.
'63 Plymouth, Straight axle, Leaf springs, Drum brakes, 31x10.5wx15 Rears 3215lbs
Best time to date 7.99 @ 170 mph
572" Wedge 8-71 @ 28% OD, ALKY, Glide, Dana

http://www.youtube.com/watch?v=vq-xzFWHtFk
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prostude
Posts: 46
Joined: Mon Apr 26, 2010 11:16 am
Location: Syracuse NY

Re: .040 pistons for 350 blown application

#4 Post by prostude » Mon Jun 14, 2010 11:43 am

here is a linkto the SRP piston I am considering
http://www.summitracing.com/parts/SRP-139633/


here is the description
Inverted dome top pistons for your 350/400 small block Chevy.
These small block Chevy 350/400 inverted dome top pistons by SRP are made from 4032 low-expansion, high-silicon aluminum alloy that's heat-treated to SRP specifications. The ring land and crown thickness have been specifically engineered for mild turbo, supercharged, and nitrous applications. Their forced pin oiler provides increased wrist pin lubrication. A pin fitting, double Spiro locks, and a wall wrist pin are included. The CNC-machined ring grooves accept 1/16, 1/16, 3/16 rings, which are sold separately.
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.

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CDR Performance
Posts: 147
Joined: Tue Mar 02, 2010 7:41 pm
Location: Indianapolis, Indiana

Re: .040 pistons for 350 blown application

#5 Post by CDR Performance » Tue Jun 15, 2010 9:47 am

Not what you want. The 4032 is too rigid. You need 2618's to keep it alive.

I returned your PM.
CDR PERFORMANCE
The Custom Engine Shop

Dart - Callies - BRC - Oliver - BME - Custom Cams - T&D - Trend - JGS - BorgWarner - SuperNatural - EV - CSU - C&S - BS3

http://www.cdrperformance.biz

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