I just build me a complete motor with the edelbrock performer RPM package, cam, carb, intake. I am using a mallory regulator with my intake pump to fuel my carb. The car stumbles at idle and almost dies until 1500 RPM's. I am using the stock converter. The cam has 488,501 lift. Why is it doing this?

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Bright red 87 GTA with 350 tuneport. Basic mods such as K&N filter, Flowmasters, Wells MAF, TPIS air foil, Accel 8.8mm plug wires with , Accel distributor cap and rotary buttons.Gutted cat. B&M Shift kit, 100HP shot Nitrous, soon to change over to carburator.

 

Make sure your needle & seats are clean and not stuck. Make sure your float level is set correctly.
What is you fuel pressure at the carb?

The edlebrock camshaft is junk... FYI

ODB

 

I wouldn't say it's junk but maybe not what he expected. Your're not gonna see much low-end performance out of your system and it sounds like you need some minor carb tuning. Get one of the Edelbrock Tuning kits for your carb P/N and follow its directions and you'll be better.

You got the heads, too, right? Stock heads with that system (cam+intake+big carb) is a bad thing for driveability.

 

i agree with those 2 the package needs air flow from good heads! the cam might(and does!) need at least a 2,000 rpm stall! and try asking odb about re-tuning a edlebrock carb have to admit he knows his **** about edlebrock carbs!!! ask him he can deliver!!! just email odb and he'll gladly help !!

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 160 (882) heads,.447/.447 lift 222@.050 duration speed pro 327/350hp cam 350 .40 over (356) edlebrock performer rpm intake and a 600 edlebrock manual choke (1405) Proform H.O. distributor slightly revised 700r-4

Future mods comp extreme energy roller cam, world products sportsman 2 heads, msd 6al ignition, billet distributor, blaster 2 coil and a 406 engine is in the works soon!!!!

 

Why is the camshaft crap???? Which cam do yall think will be better???

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Bright red 87 GTA with 350 tuneport. Basic mods such as K&N filter, Flowmasters, Wells MAF, TPIS air foil, Accel 8.8mm plug wires with , Accel distributor cap and rotary buttons.Gutted cat. B&M Shift kit, 100HP shot Nitrous, soon to change over to carburator.

 

My heads are 462 casting number camel humps. They have 2.02,1.60 valves, 3 angle valve job, decked, ported polished, redrilled for angled plugs.

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Bright red 87 GTA with 350 tuneport. Basic mods such as K&N filter, Flowmasters, Wells MAF, TPIS air foil, Accel 8.8mm plug wires with , Accel distributor cap and rotary buttons.Gutted cat. B&M Shift kit, 100HP shot Nitrous, soon to change over to carburator.

 

Those are good heads so I wouldn't say that's the problem! The cam could definitely change tho'!! Get an extreme energy comp cam! You can get the one with a .477/.480 lift and a 230/236 duration and you can still use the stock converter!! You could use ODB's "suggested" cam but it's just a suggestion and personally I think you'd see better performance out of the cam I listed here!! Don't be fooled by ODB's 1/4 mile times......he has the car gutted for less weight!!

Another thing you might think about is taking out the intank fuel pump and just hooking up a nice mechanical pump! You can leave the intank one in there also if you like.....you'll just hafta unhook the oil pressure switch and get a mechanical guage (because the intank pump coming on and going off is based on the oil pressure switch) ...and also disconnect the fuel pump relay!

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1986 Trans AM
305 TPI
4 Wheel Discs
9 bolt Borg Warner Rear
Completely Stock
Soon to upgrade to a 350 converted from TPI to Carb, Edlebrock Carb, Edlebrock Performer RPM Intake, Headman Shorty Headers, Vortech Heads (possibly ported), comp Xtreme Energy cam, proform HEI distributor kit w/MSD 6-AL Ignition box!!
Current project: Keeping my car running until I get the money for the above mentioned project! :-)

 

just kidding

[This message has been edited by The ODB (edited February 20, 2001).]

 

That comment was made before it was "revealed" that you had the car gutted! Took somethin' like 100 posts to finally get that out of you too!!

 

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[This message has been edited by The ODB (edited February 20, 2001).]

 

You gotta tune, man. It's not gonna run like a top out of the box. That cam is ok, just gotta work with your setup.