Carb model questions

[crapwacker]

1. How do i know what model carb I have? Haynes says they should be VM26ss
2. According to said manual, main needle should be5F21. It's not, it's 5DL36
3. Dynojet kit 3304, for 78-79 gs1000; can this be used for my 79 gs750?
4. Recommended changes to main jets while I have these apart would be
of a great help
5. I know I've been asking sort of the same questions, but I've been down
over a week, and would like to get close to dead nuts-on ASAP.

 

[tkent02]

What is your intake and exhaust?
The 750 takes bigger main jets than the 1000, do the kit won't work right.
5DL36 needle is correct for both models I believe.

 

[crapwacker]

K&N in stock airbox and Vance&Hines 4-1

 

[crapwacker]

Along with jet size, where is a good place to start with the needle clip?

 

[tkent02]

It depends on how it is running, you need to testride, do plug chops, the whole works.
The pipe may not change much except for the required main jet size, or it may need a little more in the needle position, maybe half to one notch higher needle?
But all of this is just a big guess without riding the bike.