Thread: Holley 650 dp jet sizes????
Results 1 to 3 of 3
LinkBack URL
About LinkBacksHybrid View
rbomar 
-
05-15-2005 05:32 PM #1
CHR Member
- Join Date
- Apr 2005
- Location
- Orange Park
- Posts
- 12
Holley 650 dp jet sizes????
Can someone give me a starting point for my holley 650 dp carb?
My engine combo is 355 sbc, 9.5:1 cr, Vortec heads, Comp Cams Magnum 280H hyd. cam, 1 5/8 headers. It now has 70 in primarys and 80 in sec. I think that is too rich. This is a brand new engine with maybe 50 miles on it. I put Champion RS12YC plugs in it and they are beginning to foul out. I thought it may be the jetting, so I looked at the carb jets. Any thoughts???/
-
05-15-2005 07:19 PM #2
CHR Member
- Join Date
- Aug 2003
- Location
- Springfield
- Car Year, Make, Model: '66 Mustang, 76 Corvette
- Posts
- 5,404
Try 65's in the primaries and 76's in the secondaries. I ran that combination in a 400sbc with an Isky 30/30 solid lifter cam with pretty good resultsKen Thomas
NoT FaDe AwaY and the music didn't die
The simplest road is usually the last one sought
Wild Willie & AA/FA's The greatest show in drag racing
-
05-16-2005 07:18 AM #3
CHR Member
- Join Date
- Jan 2005
- Location
- Elkhart
- Car Year, Make, Model: 1957 chevy Belair
- Posts
- 316
NOt sure but think that plug you have is too cold for your app....
Reply With Quote
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
Ditto on the model kits! My best were lost when the Hobby Shop burned under suspicious circumstances....
How did you get hooked on cars?