[x007]

Hi,

I'm not an Holley expert so need advice,

I have a Brand new 950cfm HP (the one a 650$+USD at summit) so i want to use it.., but i run a 410ci whit a F1 procharger, and if i'm right, a 750 or 800cfm should fit pretty well this engine.. But i have a 950HP thats a supercharger ready carb, to use...

I think its a bit too big for my engine, i have runned a bit whit the car that run fine and idle pretty well also but since all is new & i run a procharger on it the setup became tricky a bit.

I want to know if some experienced here have a good guess for the jet size to use on a 400/410ci SBC whit a 15/20psi boost on my 950cfm.

I'm pretty new whit the setup whit a supercharger, then using an AEM Lambda Meter for a precise air/fuel ratio also have a pyrometer, but as i can see when RPM going up the mixture became to rich a lot, at idle i'm pretty fine, but the supercharger can be the cause as well then create a rich mixture whit cranking since it compress more fuel.

Any help info appreciated..

I have already ordered some book about holley carb
to learn a bit on it but since the carb i have are already "race prepped" the only thing i may have to play whit is the jet size i think & may be the pump cam (i have a miss already when cranking), i dont know deeply holley carb so...

thanks.

[lluciano77]

The 950 hp is just a 750 double pumper with an 850 baseplate. They probably flow around 800 CFMs.

[x007]

Originally Posted by lluciano77

The 950 hp is just a 750 double pumper with an 850 baseplate. They probably flow around 800 CFMs.

Thanks for the info,
Any sugg. or range about jet size to use on 410ci / supercharged ?

[lluciano77]

You got me there. I have no experience tuning a Holley to a forced induction set up. You will have to see what the engine wants. There are a few supercharger books out there that looked pretty good. Those might get you a baseline to start out with.

[x007]

Originally Posted by lluciano77

You got me there. I have no experience tuning a Holley to a forced induction set up. You will have to see what the engine wants. There are a few supercharger books out there that looked pretty good. Those might get you a baseline to start out with.

ok thanks , i guess i will order a kit of jet for holley.. will be easyer like this i think...

Thanks !

[willys36@aol.com]

This is Holley's REAL 950!

[x007]

Here is mine 950HP Race series ;

[shawn451]

Hey X007, Just wondering what you thing of that 950 hp. I'm considering buying one and I really have no input on how they perform.
Thanx.