Carb Jetting ?

cal · 04-21-2011, 10:12 PM

OK I need some opinions,or what you are running for carb jets.

Motor is a 468, 13 to 1 compression, 714/714 Lift roller, BB 2 Plus heads, Team G intake, Quick fuel 1050 carb.

I changed the plugs tonight and they were a little whitish, I have 92 square in it now.

I guess I'll need to go to 94 square or higher?

any comment will be apperciated.

Cal
HR 177X

cad · 04-21-2011, 11:33 PM

http://www.dragstuff.com/techarticle...ark-plugs.html

Keith 944 · 04-22-2011, 09:15 AM

is that a 1050 dominator style or a 4150? i have both, i use a little more jet in the dom. 92 sq. 86sq in the 4150. every engine is slightly diff. but you seem very close....

Dave Steltz · 04-22-2011, 11:31 AM

When I ran a Dominator, seemed like the 92 range was good for most smaller BBC's like yours...Maybe invest in an EGT so you can see a little closer, but you should be very close...

63corvette · 04-22-2011, 04:09 PM

Another important part of jetting is what the adjusted altitude you are running at is and what squirter you use.
You can run a leaner jet and use a bigger squirter to keep it from stumbling at the starting line but you may still be lean on the big end.
Consider more than jet size alone.
My 2 Cents
Rick Cates

wayne sipos · 04-22-2011, 07:17 PM

you could try a smaller hi speed air bleed

Ron Finney · 04-22-2011, 09:09 PM

I had almost the exact same combo except mine was 461 cube....I ran 94 square and have even had 96 in the back in better air....

Good luck!

cal · 04-22-2011, 09:48 PM

Thanks Guys

I Put in a fresh set of plugs tonight, and I guess I'll fatten it up a little tomorrow and see what happens.

Cal
HR 177X

jmarkaudio · 04-24-2011, 10:07 PM

Jet it for best MPH, that will be the most HP. You can go down one jet size from there and gain a little consistency. Jet requirements can vary depending on the ability of the engine to burn the fuel used, and different fuels can require different jets. The Dragstuff plug article is a good one to learn plug reading.

04-21-2011, 10:12 PM	#1
cal Member Join Date: Mar 2007 Location: southern md Posts: 370 Likes: 39 Liked 31 Times in 18 Posts	Carb Jetting ? OK I need some opinions,or what you are running for carb jets. Motor is a 468, 13 to 1 compression, 714/714 Lift roller, BB 2 Plus heads, Team G intake, Quick fuel 1050 carb. I changed the plugs tonight and they were a little whitish, I have 92 square in it now. I guess I'll need to go to 94 square or higher? any comment will be apperciated. Cal HR 177X

04-21-2011, 11:33 PM	#2
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: Carb Jetting ? http://www.dragstuff.com/techarticle...ark-plugs.html

04-22-2011, 09:15 AM	#3
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,193 Likes: 1,162 Liked 1,877 Times in 577 Posts	Re: Carb Jetting ? is that a 1050 dominator style or a 4150? i have both, i use a little more jet in the dom. 92 sq. 86sq in the 4150. every engine is slightly diff. but you seem very close.... __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody

04-22-2011, 11:31 AM	#4
Dave Steltz Member Join Date: Nov 2003 Posts: 323 Likes: 0 Liked 0 Times in 0 Posts	Re: Carb Jetting ? When I ran a Dominator, seemed like the 92 range was good for most smaller BBC's like yours...Maybe invest in an EGT so you can see a little closer, but you should be very close... __________________ Dave Steltz 135G SG/SP/SST BIAECH Racing Team

04-22-2011, 04:09 PM	#5
63corvette Senior Member Join Date: Mar 2007 Location: Canyon, Tx Posts: 552 Likes: 128 Liked 359 Times in 103 Posts	Re: Carb Jetting ? Another important part of jetting is what the adjusted altitude you are running at is and what squirter you use. You can run a leaner jet and use a bigger squirter to keep it from stumbling at the starting line but you may still be lean on the big end. Consider more than jet size alone. My 2 Cents Rick Cates

04-22-2011, 07:17 PM	#6
wayne sipos Junior Member Join Date: Dec 2007 Location: ontario canada Posts: 39 Likes: 0 Liked 0 Times in 0 Posts	Re: Carb Jetting ? you could try a smaller hi speed air bleed __________________ Wayne Sipos HR 3959

04-22-2011, 09:09 PM	#7
Ron Finney Member Join Date: Jul 2008 Location: Greenwood, IN Posts: 168 Likes: 0 Liked 0 Times in 0 Posts	Re: Carb Jetting ? I had almost the exact same combo except mine was 461 cube....I ran 94 square and have even had 96 in the back in better air.... Good luck! __________________ Ron Finney 396V S/C

04-22-2011, 09:48 PM	#8
cal Member Join Date: Mar 2007 Location: southern md Posts: 370 Likes: 39 Liked 31 Times in 18 Posts	Re: Carb Jetting ? Thanks Guys I Put in a fresh set of plugs tonight, and I guess I'll fatten it up a little tomorrow and see what happens. Cal HR 177X

04-24-2011, 10:07 PM	#9
jmarkaudio Junior Member Join Date: Apr 2008 Posts: 83 Likes: 0 Liked 0 Times in 0 Posts	Re: Carb Jetting ? Jet it for best MPH, that will be the most HP. You can go down one jet size from there and gain a little consistency. Jet requirements can vary depending on the ability of the engine to burn the fuel used, and different fuels can require different jets. The Dragstuff plug article is a good one to learn plug reading.