gt40 CARB or EFI?

carbs will pull more hp, EFI will pull more low rpm torque due to the intake design. Not much difference either way though. What gears do you have? If auto trans, what stall converter?

Speed-pro cs195R cam or a TFS #1
The FRPP cams suck!

a higher stall converter will let the engine get in its powerband quicker. Example. Car A has a the stock converter, say 1500 rpm stall, and is fitted with a cam that comes on at 3000 rpm. Punch the throttle, the engine will lag for a moment until it picks up the extra 1500 rpm where the powerband comes in. You have a 1500 rpm difference where the engine will be down on power. Now lets say car A has a the same cam but with a 3000 stall converter. Punch the throttle and whammy, you're right in the powerband, accleration goes through the roof, you're putting more torque to the wheels, in general its just a great experience, LOL. Seriously, a converter makes all the difference in a performance application. Get a converter that stalls at at least the cams minimum rpm range, maybe even higher. If the cam is listed as 2500-6000 rpm, go with at least a 2500 stall, or even better a 3000 rpm stall.

I agree that the FMS cams are getting outdated, however they are still good cams.

Personally, with an AOD, I'd go with 3.70's or 3.89's, a 3000 stall converter with lockup, and a cam with around .520-.530 lift and 225-230ish dur at .050. If you go with a 2500 stall you wouldn't really need the lockup and you'd save some dough, but your holeshot wouldn't be as strong.

I don't see why a carb would make more HP...

To me the choice really depends on what you want.

True.. you can tune a carb to run almost as well as EFI...but you have to be a tuning wizard and have alot of time on your hands to do it. EFI will provide for better fuel economy as well.

Carbs have the benifit of being cheap and easy. An EFI swap isn't rocket science...but it's a heck of alot harder than bolting on a carb.

I guess I'm biased...I'd go with EFI.

I have the quality roadsters mass-flo system-best of both worlds. It gives you vintage looks with fuel injection and the thing just loves to run. Plus the owner Chris Richards will talk you through any technical difficulties you may have. he stayed on the phone with me one night for over an hour just to help me find out that i had a dead EEC which had nothing to do with his system-i had a used computer.
I have one on my 65 AC Cobra replica. Future purchases will be made though for the stang.
www.qualityroadsters.com

Here is a pic of the system on my FFR Cobra replica


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BottleFed70 said:

An EFI swap isn't rocket science...but it's a heck of alot harder than bolting on a carb.

I guess I'm biased...I'd go with EFI.

Click to expand...

+1

EFI can tame your cammed / blown / whatever engine and still make it behave better than a carb consistently could. No reason to think you can't make all the HP you want with EFI (I just made 445rwHP with a blown 306)