[m42racer]

Originally Posted by ajd48

Hi all,

I'm appreciative of the helpful info on the forum about various configurations for earlier motors running PMO carbs. I was wondering if I could get some input on an economical (don't laugh) approach to take for converting a 993 3.6l (currently sourcing the engine so could be 964 or 993) to carbs. I'd like to avoid the debate about carbs vs. EFI since there has been much written on this topic already. The engine will be primarily for street use in a warm climate. The specific questions I have are:

Mine is why???

1. What is the expected HP pick up of stock EFI VRAM 3.6l with upgraded headers/high flow exhaust vs. the same set-up but with carbs instead of EFI? The former is around 300 hp as I understand it. What is the later's HP?

Less than stock and around 280HP. Plus you will have less response and all ofn the normal head aches of carbs.

You must have a reason that can be understood??? Can only think this is going in a Non EFI car.

2. What other work is minimal work required to the engine to bolt on the PMO carbs to a 3.6l?

Depending on chassis, Fuel system, pumps, plumbing, cams, maybe compression ratio issues on the street and Distributor change.

3. What other work is recommended to the engine to bolt on PMO carbs to maximize HP? I'm looking for the biggest bang for the buck. I suspect its cams and pistons. Is it a sound approach to have the cam reground rather than getting a new cam in this application? Which piston heads are recommended?

A huge can of worms that should be steered clear of.

Any references to a previous detailed engine build along this line would be much appreciated.

Don't know of anyone who would do this for a street engine. Seriously, why not keep it stock or fit an aftermarket EFI system. You at least have all of the sensors etc., it is an easy do. Scared of tuning? Its a one time thing when done correctly, but you will be messing with the cards forever. And make less power and less throttle response.

Thx all!

Interesting question. see above for the short answers.

You have to be nuts!!!!