Okay,
I have a 350, Vortec heads with a little port work, RPM Intake, Shorty headers, 11:1 CR, Xtreme Roller-230*/236* @ .050-.510"/.520", 106* centerline, Explosive HEI dist., Holley 750 D.P.
My question is: What are some of you running for jet sizes that maybe just have the 750 carb. on a dis-similar engine? Right now I have 69/73.

Thanks,


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Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)

 

Every engine is different, every car is different. Time to go to the track for some tuning if you want the max power.

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350 with stealth intake, holley carb, 470 lift cam. 700r4 with .5 boost valve, vette servo, tci lock-up kit, B&M megashifter. Richmond 3.73 gears, powertrax locker, timkin bearings, synthetic lube. Custom 3 inch single into 2 2.5 pipes. 1 1/2 drop springs, 1 5/16 solid front sway bar, 1 inch rear bar, custom subframe connectors, custom LCA relocation brackets. Kobel ground FX, current red metallic paint. Lots of other stuff...
82camaro

 

This is true. But if I could get an idea of where to start, maybe what I have now is too big, or to small, ideas from others would help. And the closest track is 70miles away. I don't have a lot of time to go there. The back roads work better for me!!!

Thanks,


------------------
Joshua Johnston
1991 Z-28
Flowmaster
K&N
305 / 5spd. (Temporary)

 

Look at my sig for setup. I am running 66/74 on my 770 Holley STreet Avenger. Your plugs would tell you alot as how your engine is running.

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383 86 Camaro Z28
10.5:1compression Dart Pro 1 Aluminum heads 215cc>2.05/1.60 valves,400 steel crank,cam specs:224/234 at 050 525/525 lift,3500 stall converter,shift kit,3.42 gears,770 Holley Avenger,Victor Jr. Intake,true dual exh,Hooker headers with 40 series Flowmasters,MSD Coil and Module.

 

Several companies make reasonably priced A/F gauges that use a stock O2 sensor. They're an invaluable tuning tool....pick one up and go from there.

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"American made baby. 100% American iron. The muscle among the masses. My hero. Yep, you can take your ergonomically designed, space age, computer controlled, 4 door, cup holding map lighted split double wishbone split fold down retractable cargo covered moon roof piece of transportation and keep it. For I have felt the thunder. And I know the difference!"
JSP Motorsports
ICON Motorsports

 

Bigblock454engine,

How has the street avenger carb treating you, i have a 355, performer manifold, headers, 224/224 at .05, similar mods but i have a stock q-jet of a 74' suburban thats gettin in bad shape, lookin for an upgrade...

i'm lookin at the street avenger 770 carb by holley... how do they perform, are they really the next gen carbs like they claim, just wondering how you like it??? how does it compare to the 750dp...

thanks

 

or is a 770 to big and would it be better to go with a 670?!?

any help would be appreciated...

 

Sorry I didn't respond any sooner to your question Chrome(to much overtime at work). Honestly I would say that a regular 750 Holley (less expensive) is the way to go. You can buy the metering block and quick change kit yourself and save some money. I had a 750 before the Street Avenger and comparing the two I noticed zero difference. I would recommend a 750 holley vac secondaries.

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383 86 Camaro Z28
10.5:1compression Dart Pro 1 Aluminum heads 215cc>2.05/1.60 valves,400 steel crank,cam specs:224/234 at 050 525/525 lift,3500 stall converter,shift kit,3.42 gears,770 Holley Avenger,Victor Jr. Intake,true dual exh,Hooker headers with 40 series Flowmasters,MSD Coil and Module.