High compression HP

Cwalk

New Member

Sep 25, 2006

78

0

0

Virginia Beach, Va

Mar 23, 2007

#1

• Mar 23, 2007

• #1

I have always heard high compression is a poor man's way of getting high HP. I was thinking of building a 355. Can anyone tell me what to expect with these components.

355 shortblock(12.5.1cr)
Ported Victor Jr. heads(60cc, 210cc, 75cc before the p/p)
1.72 Scorpion rockers
TFS stage II cam(.583/.605 with 1.72 rocker, 224°/232°@.050)
Performer RPM II intake manifold ported
42# injectors
Trick Flow pushrods

How much would this combo produce? How much would the same combo with a 9.5.1cr produce?

 

Flavadave4

Active Member

Nov 28, 2003

1,044

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49

Utica, NY

Mar 23, 2007

#2

• Mar 23, 2007

• #2

How do you get 355cu?

 

Cwalk

New Member

Sep 25, 2006

78

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0

Virginia Beach, Va

Mar 23, 2007

#3

• Mar 23, 2007

• #3

get a 355 stroker kit............

 

BIG-MAC

New Member

Jan 22, 2006

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Dallas

Mar 23, 2007

#4

• Mar 23, 2007

• #4

Not sure on the HP but I think you need more cam for that compression and heads. Something in the 240-250 @.050 range minimum with a 110 deg LSA. With the relatively short timing on the one you specd it seems low RMP cylinder pressure would be rather large.

 

Cwalk

New Member

Sep 25, 2006

78

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Virginia Beach, Va

Mar 24, 2007

#5

• Mar 24, 2007

• #5

BIG-MAC said:

Not sure on the HP but I think you need more cam for that compression and heads. Something in the 240-250 @.050 range minimum with a 110 deg LSA. With the relatively short timing on the one you specd it seems low RMP cylinder pressure would be rather large.

Click to expand...

LSA is 120, and I dont want to go bigger on the cam. Since the car will be driven on a daily basis.

 

Hickfied

Member

Nov 9, 2005

413

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16

Morganton, NC

Mar 24, 2007

#6

• Mar 24, 2007

• #6

On a street car, I would keep the comp to 11.0 with those alum. heads.... And lower w/ irons.... That is as high as i would go w/ 93, but hey, I could be totally off base!