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Re: 451 or 470 for street/strip car
[Re: viperblue72]
#1065669
08/31/11 05:43 PM
08/31/11 05:43 PM
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Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,282
A gulag near you.
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Quote:
The 470 will give you a little more compression with a flat top piston. The piston would be lighter per a given length of rod, but I think the 6.535 rod is optimal for a 470 which is also cheaper than a chrysler rod. The 3.9 stroke also takes a little out of the radius of the crankshaft which arguably helps the strength. My machinist quoted me 150 more dollars to offset grind. Being the chevy rod is cheaper the price comes out close.
3.9 stroke would use a 6.700 rod with the available shelf stock 1.320 pistons if going long rod.
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Re: 451 or 470 for street/strip car
[Re: JohnRR]
#1065670
08/31/11 06:59 PM
08/31/11 06:59 PM
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Joined: Aug 2006
Posts: 2,141 junction city oregon
viperblue72
top fuel
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top fuel
Joined: Aug 2006
Posts: 2,141
junction city oregon
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JohnRR, Good call! That piston canbe used for either 451 with 6.76 or 470 with 6.70.
Last edited by viperblue72; 08/31/11 07:11 PM.
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