Converting Holley 9375-1 for blower use

[jimsplace]

I am switching from naturally aspirated twin dominators over to be used with a blower. They are the Holley 9375-1. These carburetors are the 3 circuit, with annular booster type and come with 86 jets. What modifications and jet changes are needed? The 86 jets seemed to work well while naturally aspirated. The altitude here is about 500 feet.
Thanks

[Fiat48]

Probably going to be a tough call.
If it were me and you are willing to do the tuning with caution, I would jet up about 4 numbers front and rear from exactly what the carbs came with stock.
Then I would do a pyrometer (such as Computech and others have) and get an exhaust temp reading. Combine that with plug readings and some 1/2 track passes and see where you are.
Aside from that...you could send the carbs to a known shop that can recalibrate and boost reference the carbs for you. There is one such shop here in Reno but he is about 4 weeks behind.
But in the end you will still have to tune it as a lot depends on your engine combo and blower.

[GofastRacer]

Ya know, this is taking a lot of internal fortitude not to reveal the simplest solution to this dilemna here!..

[bordsmnj]

INJECTION???? oooh,oooh, oooh, mister carter,mr carter!
..so much for fortitude.

[Fiat48]

All I can say Art is:
Off with the old:
http://www.***boat.com/image_center/...0/SUC50200.JPG
On with the new:
http://www.***boat.com/image_center/...0/SUC50199.JPG
:jawdrop: :jawdrop: :jawdrop:

[GofastRacer]

INJECTION???? oooh,oooh, oooh, mister carter,mr carter!
..so much for fortitude.
LMAO!...

[GofastRacer]

All I can say Art is:
Off with the old:
http://www.***boat.com/image_center/...0/SUC50200.JPG
On with the new:
http://www.***boat.com/image_center/...0/SUC50199.JPG
:jawdrop: :jawdrop: :jawdrop:
And all I can say Bob, is you have it backwards or you're having a siesure!.. LMAO..

[Morg]

Oh baby, take me home & put me to bed. I have seen enough to know I have seen to much.
It is a sad day.
Ya wanna sell the injector??

[Fiat48]

Uh huh huh, I don't know.

[GofastRacer]

Oh baby, take me home & put me to bed. I have seen enough to know I have seen to much.
It is a sad day.
Ya wanna sell the injector??
Nahh I have confidence, he'll recover quick!..