Holley info needed.

-
Snake

Snake

Mopar Nut
Joined
May 22, 2006
Messages
9,452
Reaction score
489
Location
Belleville Canada
My cindy bought me a new 650 vs duel feed carb. on the horn the list number is 0-80783c never seen this number befor.so does any 1 of you have this carb and did you like it.i have a post on our sister site FBBO.just want as much info as i can get.thanks gent.
 
Good day all,this holley has 67 front jet and 73 rear the 73 rear sounds good to me but the 67 up front seams to be lean for my mild 360 build what ya think.thankssssssssssss again.
 
Front jets can be changed to whatever you wish, contact me if you need any information.
 
Snake said:
Good day all,this holley has 67 front jet and 73 rear the 73 rear sounds good to me but the 67 up front seams to be lean for my mild 360 build what ya think.thankssssssssssss again.
Click to expand...


What makes you think it’s lean? Have you ran it yet?

There is more to jet sizing than the number on it.
 
The one I have has holes in the dogleg.
This can, but not always, cause problems.
If it was mine, I'd plug the holes to begin with as there is no advantage to leaving them.

Of course I didn't know that until after banging my head against the wall for a while.
Made the mod but haven't switched back to that carb to test it out yet.
See photos here and links back to RFS
Holley Jet size
 
You'll know too lean when trying to cruise at 65 mph. LOL.
On the drag strip is another story. That you really want to sneak up on.

I put 67 jets in the primaries at that same time based on previous dyno and street tests.
Holley Jet size
 
Don, don't take the forum gurus and magazines as gospel They AIN'T. lol That 650 will be really nice on a mild 360. Just because you see "750" everywhere doesn't make it "RIGHT" it just makes it repeated. lol I bet Ms Cindy hit the nail on the head. you better hug that gal!
 
RustyRatRod said:
Don, don't take the forum gurus and magazines as gospel They AIN'T. lol That 650 will be really nice on a mild 360. Just because you see "750" everywhere doesn't make it "RIGHT" it just makes it repeated. lol I bet Ms Cindy hit the nail on the head. you better hug that gal!
Click to expand...
She got more than a hug ,thanks ROB.
 
You must log in or register to reply here.
-

Back
Top