Author Topic: 7045264  (Read 149 times)

Offline mcx

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7045264
« on: August 16, 2020, 04:43:31 PM »
Looking for info regarding the original prim jet/rod and sec rods on this 1975 Pontiac..thanks.

Offline Kenth

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Re: 7045264
« Reply #1 on: August 17, 2020, 02:14:00 AM »
#7045264, Application PONTIAC, LEMANS, GRAND PRIX 400,
Pri jets #72, Pri rods 40K, Sec rods DB #7047806,
Airvalves preload 1/2, Power piston spring 7029529.

Offline mcx

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Re: 7045264
« Reply #2 on: August 17, 2020, 04:28:49 AM »
Thank you....picked it up for ten bucks on EBay, I haven't had one of these before.

Offline mcx

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Re: 7045264
« Reply #3 on: August 19, 2020, 02:44:20 PM »
...I disassembled her today and recorded the following:
Prim jet 62
Prim rod 39
Sec rod  DB
Hanger O
Main bleed .067"
Lower Main bleed .0410"
Idle tubes ?
IDCR .0465"
Upper idle bleed .0595"
Lower idle bleed .0635"
Idle air bypass .1100" (base plate)
P.O.E. .0595"
Idle mixture holes .093"
...this is a real undesirable LOL android type core and the first I have gotten my hands on..interesting to pull out the android and see it's single rod and jet in the bottom of that void...It is a  Pontiac 800cfm casting with that mesh screen over the center/fuel bowl...this core also has the  upper idle bleeds drilled in the airhorn...it also has those very small bleed holes next to the center airhorn tubes(never seen those either in person).