Compression for blown 331 Q

KBCobra95

New Member

Aug 28, 2005

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North Carolina

Aug 1, 2006

#1

• Aug 1, 2006

• #1

I plan on building a dart sportsman 331 with forged internals, AFR 205 (225?)heads, a custom cam and some high (12-20#) boost from a kenne bell blower. The question is what type of compression should I build this motor to? I still want enough that if I ever take the blower off I will still have decent power. Also, what type internals do you recommend? Scat or Eagle? Other? Thanks. Andrew

 

OrangeMustangGt

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Mar 7, 2002

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Cape Cod, MA

Aug 1, 2006

#2

• Aug 1, 2006

• #2

huh....can a kenne bell supply that kind of boost at that power level? ....not helping but i always wondered that...

 

Redsnk95

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Feb 3, 2002

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Houston, TX

Aug 1, 2006

#3

• Aug 1, 2006

• #3

If your going to use the KB, the compression can be 9.0-9.5:1. SCAT and Eagle are both quality rotating assemblies, SCAT is probably just a tad bit higher quality but both 4340 assemblies will handle 1000hp no problem.

 

KBCobra95

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Aug 28, 2005

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North Carolina

Aug 1, 2006

#4

• Aug 1, 2006

• #4

GreenMustangGt said:

huh....can a kenne bell supply that kind of boost at that power level? ....not helping but i always wondered that...

Click to expand...

Kb rates their blower safe to 18 psi (Blowzilla w/Flowzilla manifold).

 

QUIKSVT

New Member

May 19, 2006

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Aug 2, 2006

#5

• Aug 2, 2006

• #5

i would say 9 ;1