Results 1 to 3 of 3
Thread: What size jets should I run?
-
12-13-2008 #1
Registered User
- Join Date
- Nov 2008
- Location
- Westminster, MD
- Posts
- 579
What size jets should I run?
I just picked up a 600 double pumper for my 355. The 355 is a mild build, 9 to 1 with small valves, RPM intake and the cam is in the .450-.460" lift and 272-278 duration range (don't remember exact specs & lost the cam card). Right now the carb has 74 primary jets and 76 secondaries which I'm thinking will be a little much for this set up right now.
Ed Cooney
'96 Buick Roadmaster Estate Wagon, LT1/4L60, full bolt-ons & Solomon's tune, 18" Ridler wheels, lowered with Belltech springs
‘70 Buick Skylark Convertible project w/ GN drivetrain
'91 Formula, pending track day build
-
12-14-2008 #2
Registered User
- Join Date
- Jun 2005
- Location
- Little Rock, AR
- Posts
- 55
Look up the model of your carb on Holly's website and find out what it came with out of the box. Start there.
12-17-2008 #3
Starting The Transformation
- Join Date
- Jan 2008
- Location
- Felton, DE
- Posts
- 346
My holley 750 came with 72 primaries 76 secondaries. This setup was just about perfet for my 346 but its pushing about 550hp.
I think you should run something like a 72 primary and a 74 secondary or so1994 Z28 - 13.52@110mph 2.1 60ft T56, bolt-ons, suspension
1978 Datsun 2+2 - 6.0L LS1 swap in progress
1968 Firebird, 2820 dry- 2000 LS1, D&D Viper T56, RAM clutch/flywheel, 236/236 .651/.651 110+4LSA cam, victor JR EFI, 4150 TB, 42lbers, painless harness, Moroso 7qt pan, sfc, trac bars, 3" x pipe side exits, Telstars-30"MT streets/skinnies, mini-tub, 8.5" posi, richmond 4.56s, Hooker lLTs, Denny N20 DS, Fast dual wideband, Shotgun street scoop.
http://www.myspace.com/shawnmacananny
Reply With Quote
