I want to get a better carb. I've been looking at the Edlebrock Performer. The 50 state legal one. I was wondering if this carb was compatabile with my car. It's an 84 TA with the L69 motor.
Would a Holley be better for my car??
I'm looking for something at 600-650 cfm.

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Manny

84 Trans Am

 

hey this is off the subject.....but is yours a HO?

cuz i have a 84 TA with the L-69 and mine doesnt have the HO dual snorkel

does yours??

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84TA T-tops L-69 305HO TH-700R4 stock 190hp and 240 ft-lbs.
new best E.T. (dont laugh) 15.986 @84.93mph
old best E.T 15.997@86.04
http://www.geocities.com/K_towngangsta

 

"50 State Legal" does not apply to computer controlled carbs, which yours is, which also means that carb is not compatible with computer controlled distributors.

Also, both Edelbrock and Holley are square bore flanges, meaning neither would fit your stock intake manifold without an adapter.

You also need to better define "better". Your stock carb flows around 700-750 cfm, so if flow is what you're looking for, you already have a "better" carb.

Unless it's been beat up or otherwise abused, the stock q-jet is rarely the cause of problems on a stock 305.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).

 

I have an 84 TA with an L69 and it doesn't have a dual snorkel. I think only the Z28s got them.

 

my car is an 84 with the L69 and it has the dual snorkels it is a Z-28 though

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I own a bad @$$ 84 Z-28

kills:
85-90 formula bird 2 times
some moron in a gran prix
2 different 5.0 stangs
and many other less impressive cars

losses;
not really a loss it was a not so stock mid 80s stang that turned down a side street when i tried to pu him in his place

 

my car is an 84 with the L69 and it has the dual snorkels it is a Z-28 though

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I own a bad @$$ 84 Z-28

kills:
85-90 formula bird 2 times
some moron in a gran prix
2 different 5.0 stangs
and many other less impressive cars

losses;
not really a loss it was a not so stock mid 80s stang that turned down a side street when i tried to pu him in his place

 

So if were to install a new carb and intake manifold on my L69, how much of a HP and TRQ increase am I looking at??

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Manny

84 Trans Am

 

I would say you're looking at 10 Hp with new manifold and carb... only if you match Q-jet's ~700 CFM... If you add open element or snorkels maybe 15 or 20 Hp... but then again if your car is tuned real well right now you will probably only see 10 Hp max...

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1984 Firebird - Daily driver, 305 LG4, T5 - Hurst short shifter, Edelbrock 600 CFM Performer Carb - Edelbrock Pro-Flow 1000 air filter, gutted cat, IROC 16x8 Wheels, Goodyear P215/60/R16, AIWA bargain basement (from Sears of course) CD player
Check out my ride... needs a little work... looks pretty good though

Quote from my sister: "It sounds like a boat"

[This message has been edited by ChillPhatCat (edited August 02, 2001).]

 

Rock,
What I think you need to understand is that the carb is not the first place to go for more HP. Headers & cat would add a lot more for only slightly more money, cam would do even more with the headers, World S/R 305 heads would be complimented nicely by the exhaust & cam; and even then the q-jet will handle all the duties just fine.

If you do something with the intake, get a Performer or Action + (EGR version). If, someday, you do go with an Edelbrock or Holley carb, either of those intakes will have the bolt pattern to work with the square bore mount as well as your q-jet (which you are going to keep until all the things in the above paragraph are done).

 

Sweet. So headers, catback, and a catalytic converter is where I should start?

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Manny

84 Trans Am

 

Absolutely. Then perhaps cam and intake.

 

I agree, start with exhaust, cam, then heads and intake. A good bang for the buck also is gears, if u have an L69 car, you have that already...