2nd metering block in a 750 v/s

[dusterdarryl]

whats the advantage or even whats the point in puting a rear metering block into a 750 vac sec?

[68S]

You gain the advantage of being able to tune your fuel mixture by changing jets on the secondary side.

Pat

[tomthumb]

  the only real gain is being able to change jets without drilling

[chryco]

You can also modify the carb further by adding four corner idle .
  Chryco

[dusterdarryl]

Im thinkin of using a pair of 750 v/s carbs on a t/ram
is this the best way to tune a v/s ram?

[chryco]

It certainly couldn`t hurt . But make sure you can fit the carbs inline . You may not have the clearance front to back with the metering blacks . The "traditional" 660 cfm "center squirters" had plates on the secondary side .  You may have to mount the carbs sideways and have "fun" with the throttle linkage .
  Good Luck !
    Chryco

[dusterdarryl]

I like sideways with one of the bg linkage deals 

[chryco]

I like sideways with one of the bg linkage deals 

Go for it Mate !

[overkillphil]

Im thinkin of using a pair of 750 v/s carbs on a t/ram
is this the best way to tune a v/s ram?

Funny, I've been thinking the same thing. What engine you running?

[dusterdarryl]

engine is a 440,  not street driven.  So whats to change? I see a metering plate inside the bowl. Im guessing to remove that and add a metering block with jets & no  power valve, equalize the front power valves & diaphram springs, equalize jets size  all round & go? I will start off with heavy black diaphram spring & tune from there...  is that all there is to it??

[jamesdart]

i think its quickfuel that makes a jet plate if you need the room to keep the carbs in line it fits where the metering plate was but accepts jets.

[Winter]

Try using the purple Vac. Sec. spring to start, the black will never open fully.

[dusterdarryl]

purple huh?  ok

[Winter]

Unless you know that both carbs are too big to start with. The clear or brown ones are between the stock black smog spring and the purple, it's your guess. I use the quick change kit. And if it bogs when it hits hi gear, the spring is too soft.