Dakota_Don
Well-Known Member
- Joined
- Mar 19, 2008
- Messages
- 200
- Reaction score
- 1
the carb in question is a 770 avenger vac secondaries.
the engine is a SB 410 cid, xe274h hyd flat tappet cam 4in stroke and 4.04 bore
ported 2.02 and 1.60 valves cast iron heads eddy rpm air gap intake.. long headers.. auto 904 in a dakota with 355 gears
the carb has 72 jets, and what looks like a 8.5 pwr valve.
the truck idles like crap.. its rich and plugs are blk. and my eyes burn.
i have approx 14-16 in vac..
now do i need a pwr valve that has a lower in number?
and are the jets a good starting place? or should i change them while its apart?
float level? should the float be level when looking at the back side of the bowl? where is a good place to set the leval at since its apart?
and the idle mix screws. 1.5 turns a good starting point as well?
any other tips or suggestions while its apart?
any one use percys adjust a jet?
Timing is set approx 16
the engine is a SB 410 cid, xe274h hyd flat tappet cam 4in stroke and 4.04 bore
ported 2.02 and 1.60 valves cast iron heads eddy rpm air gap intake.. long headers.. auto 904 in a dakota with 355 gears
the carb has 72 jets, and what looks like a 8.5 pwr valve.
the truck idles like crap.. its rich and plugs are blk. and my eyes burn.
i have approx 14-16 in vac..
now do i need a pwr valve that has a lower in number?
and are the jets a good starting place? or should i change them while its apart?
float level? should the float be level when looking at the back side of the bowl? where is a good place to set the leval at since its apart?
and the idle mix screws. 1.5 turns a good starting point as well?
any other tips or suggestions while its apart?
any one use percys adjust a jet?
Timing is set approx 16