Carb Question?

IICrazy

taken away

Mar 28, 2003

976

0

36

Maple Valley, Washington

Nov 15, 2004

#1

• Nov 15, 2004

• #1

I'm looking at a road demon carb and not sure what CFM rating to get. here's what I have done.

- Headers, intake, ignition, dual exhaust, gonna add a cam soon as well.

625? or 725?

 

C

COBRAIIW

New Member

Apr 26, 2003

562

1

0

CT

Nov 15, 2004

#2

• Nov 15, 2004

• #2

625cfm is more than enough for a small block that's not seriously modified.
The 351W that I had in my other II had a 600cfm Holley that worked great!
It had very little modding done.
My 302 is got some more serious mods,and I'm running a 650cfm double pumper Holley.

 

7

77sleeper

GO BUCS!

Founding Member

Oct 11, 1999

7,266

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Napalm, AZ

Nov 16, 2004

#3

• Nov 16, 2004

• #3

390-525 would most likely give the best power, so of those choices, 625

 

1

1badII

Member

Aug 5, 2003

796

0

16

Durham, North Cacalaky

Nov 16, 2004

#4

• Nov 16, 2004

• #4

What 77 sleeper said. The Demon's flow more than what they're advertised at, so for your engine, I'd go with a 525. But of the two choices, the 625 Road Demon.

 

Blue Thunder

15 Year Member

Mar 20, 2004

1,003

55

68

Upstate New York.

Nov 17, 2004

#5

• Nov 17, 2004

• #5

I run a 750 race demon on my 332". A 725 would be overkill on a 302, unless you plan on making power over 8000 rpm with it.

 

M

myfirstii

Founding Member

Feb 28, 2002

401

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16

chicago,Il.

Nov 17, 2004

#6

• Nov 17, 2004

• #6

I ran the 625 road demon on my old setup. Stock engine with a mild cam, and a edelbrock rpm airgap intake. I loved it. Its very easy to tune. It is definitly worth the money.
Pat

 

Z

zwhitr

Founding Member

Aug 26, 2001

847

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16

Goldsboro, NC

Nov 17, 2004

#7

• Nov 17, 2004

• #7

Id say 625 if you have dual plane intake
lower if you have a single

 

D

Darkhorse845

Banned

Nov 17, 2004

101

0

0

Las Vegas,Nevada

Nov 18, 2004

#8

• Nov 18, 2004

• #8

625 CFM