Help car drops 700 rpm when going from neutral to first gear

[SSDart]

Originally Posted by 1320racer

transfer slot(s)

Equalize your back transfer slots as so they are close to the front. In other words open up your year blades ,so you can close your front. You may even need to drill bypass holes in the blades.
Showing too much transfer slot can and likely will give you hard starting issues once the engine has had some heat in it.

[1320racer]

with his big cam and tight converter, i would bet he will need to drill the throttle blades if not already done.

[SSDart]

Originally Posted by 1320racer

with his big cam and tight converter, i would bet he will need to drill the throttle blades if not already done.

It would be the best starting point......... to drill the blades......

[1320racer]

it's best to setup the carb properly first. THEN if the problem is still there, drill the throttle blades and reset the idle mixture screws, followed by the idle screw.

[ollucky]

Originally Posted by 1320racer

with his big cam and tight converter, i would bet he will need to drill the throttle blades if not already done.

Throttle blades are drilled

[SSDart]

Originally Posted by ollucky

Throttle blades are drilled

All four? How big are the holes? If the holes are too big they can create issues also

[1320racer]

get the carb off yet?

[ollucky]

Please Call Me 210 533 8058 Raul

[ollucky]

Originally Posted by SSDart

All four? How big are the holes? If the holes are too big they can create issues also

.165 bore have use this carburetor for years and have never had this problem.

[HandOverFist]

Originally Posted by ollucky

.165 bore have use this carburetor for years and have never had this problem.

There is the key. What has been done/changed since the last time it ran properly? You stated this is a new combination...did you by any chance add/change any timing related or ignition components?