Re: Jetting 6pk carbs
[Re: Mopar-Al]
#561942
12/25/09 12:27 AM
12/25/09 12:27 AM
|
Joined: Aug 2003
Posts: 43,195 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,195
Bend,OR USA
|
I have one set of early (1970) OEM carbs that have been modified to use screw in air bleeds on the outboard carbs. metering plates, choke plate removed on the center carb, still vacume operated. I have had 68 jets in the center carb. with a 4.5 power valve and a .035 power valve restriction channel, the outboard carbs. have had .092 diameter holes in the drivers side and .096 in the passenger side and ran the fastst in my car. I switchd to .096 on the divers side and .102 on the pass. side and slowed the car down. I want to try .094 on the drivers side and .098 on the passenger side next I have not ran it leaner than that, The wideban showed 11.8 to 12.3 with the bigger jets and 12.8 to 13.3 with the smaller jets, both times using Oregon 92 octane pump gas IHTHs
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Jetting 6pk carbs
[Re: ProStDodge]
#561945
12/25/09 10:14 AM
12/25/09 10:14 AM
|
Joined: Jun 2004
Posts: 6,780 Alabama
Mopar-Al
OP
master
|
OP
master
Joined: Jun 2004
Posts: 6,780
Alabama
|
Quote:
Outboard jet plates will allow you to better tune for wide-open throttle without compromising the idle and cruising circuits of the center carb.
Thanks for the replies. I bought a nos direct connection rejet plate kit for my carbs the part number was P3690793 and installed it already. It really woke the engine up. The stock plate hole size is like .030 ? These were .053 You could see the size difference. Night and day in the performance of my engine.
I am interested in the promax plates, so I am still wondering flow wise what size jets would be too much for the size of the air horn. I don't have the right terminology but I guess it like saying if you run a 650 and jet it too much, then you are better off with an 850 for flow rates.
What is flowmax's web site address?
|
|
|
Re: Jetting 6pk carbs
[Re: strokin73cuda]
#561950
03/08/10 09:49 AM
03/08/10 09:49 AM
|
Joined: Mar 2003
Posts: 15,491 the boonies
aarcuda
I Live Here
|
I Live Here
Joined: Mar 2003
Posts: 15,491
the boonies
|
im running 64 center, 84 front and back with the promax plates.
with crappy tuning, and cherry bomb mufflers hanging off the headers (i think they were 1 1/2" diameter thru the muffs), i ran 8.1 in the 1/8th about a year ago with my 416. cam was smaller than yours, compression about 9.7:1, 4.30 gear, 275/60/15 tires.
i havent been to the track since i changed the exhaust to 3" and changed a few other things.
It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
|
|
|
|
|