Single Carb or Dual Quads which is better?

[Naumoff]

Originally Posted by patrickt

That was handcrafted by Bob Putnam at ERA using an English wheel, ball peen hammer, meticulous measuring and hours upon hours of labor. Here are two shots of it. You'll note that the english "Terry Body Springs" are safety wired even though they never seem to vibrate loose.

A good Ideal to make it removable.
Are you telling us he made the whole thing from scratch? A lot of work though.

I would have modified a turkey pan and then made a separate base plate.

Two fours: vacuum secondaries
single four: mechanical secondaries


Sal, Did it come that way?
I would just move it over and put a button head screw in the exposed holes.
Worry about fixing the body later. better the mirror is in the correct position.

Hell I am just full of all kinds of advice today.

[patrickt]

Originally Posted by Naumoff

A good Ideal to make it removable.
Are you telling us he made the whole thing from scratch? A lot of work though.

I would have modified a turkey pan and then made a separate base plate.

Uhh, ehrrr, ok you caught me. I was lying about the English wheel and ball peen hammer. He fashioned it out of a regular turkey pan and base plate of aluminum. Probably took him the better part of an afternoon to fabricate it. Yes, I feel better now that I've come clean.

[Naumoff]

Originally Posted by patrickt

Uhh, ehrrr, ok you caught me. I was lying about the English wheel and ball peen hammer. He fashioned it out of a regular turkey pan and base plate of aluminum. Probably took him the better part of an afternoon to fabricate it. Yes, I feel better now that I've come clean.

OK, that sounds more like it because that would have been the most expensive turkey pan in the world.

[patrickt]

Originally Posted by Naumoff

OK, that sounds more like it because that would have been the most expensive turkey pan in the world.

Even doing it that way, with Bob's rates, it still probably is!

[Naumoff]

Originally Posted by patrickt

Even doing it that way, with Bob's rates, it still probably is!

Yeah, duh it has to be. It is still a one off peice.

[greg schroeder]

I guess there are assorted opinions. For me I sort of like the idea of best throttle response, linear throttle response, less weight, more power and getting it to stick to the street. If I did it again I'd definitely get another single Pro-Systems unit with single plane intake and Mickey Thompson ET street drag radials, 275/60 15s rear.

Pro-Systems carb without air cleaner
Pro-Systems carb with air cleaner
SAE corrected wheel power, 427W(small block), non-Superformance exhaust

[Kzof]

I do, always have, and always will believe in one for its simplicity.

[rsb427]

looking at all the pictures in here I noticed something? your engines and cars are all to clean dont you guys drive your cars! I pride myself on a little oil and bug guts! come on guys less talk more driving!!!!!!!!!

[Naumoff]

Originally Posted by rsb427

looking at all the pictures in here I noticed something? your engines and cars are all to clean dont you guys drive your cars! I pride myself on a little oil and bug guts! come on guys less talk more driving!!!!!!!!!

When you go to get pictures don't you get cleaned up.
12,000 + miles

[patrickt]

Originally Posted by rsb427

looking at all the pictures in here I noticed something? your engines and cars are all to clean dont you guys drive your cars!

Trying to keep my FE from leaking has become a sick, psychotic game for me. Keeping my engine clean gives me a leg up on the little men that live inside my engine and make it leak. I've seen the little men peeking out from the manifold and valve covers, but they're too fast for me to grab. But one day I'll catch them, and then they'll pay.... Until then, all I can do is keep the engine clean so I can see where they've been.

[Ant]

Originally Posted by greg schroeder

I guess there are assorted opinions. For me I sort of like the idea of best throttle response, linear throttle response, less weight, more power and getting it to stick to the street. If I did it again I'd definitely get another single Pro-Systems unit with single plane intake and Mickey Thompson ET street drag radials, 275/60 15s rear.

Pro-Systems carb without air cleaner
Pro-Systems carb with air cleaner
SAE corrected wheel power, 427W(small block), non-Superformance exhaust

Greg,

I have a Pro-systems 950 road race carb much like yours on my 373, I think its actually a 750cfm but flows more, with over 600bhp I have only dynoed the engine to date, but I think the mechanical secondaries with the fuel pump squirting would give better throttle response than a vacuum secondary carb for road racing, sort of kick in the pants coming out on a turn. The dyno guy compared the response of my engine to a fuel injected engine for nice progressive power. I dont think I will be changing to vacuum secondaries, but I have raced on them and they still work good! Selecting the right carb and calibrating to suit the engine, correct size are important, and with the Pro-systems carb it has some clever attributes over a standard Holley, I havent had a carb out of the box ever run as nice as this one! Keith Craft has done a nice job selecting the parts for this custom built road/race engine.

I have seen some real serious US$3-4000 carbs for racing with clever emulsion blocks etc that cover more track situations, but they are on high tech Transam, and probably Nascar total race engines

[Naumoff]

Originally Posted by Naumoff

When you go to get pictures don't you get cleaned up.
12,000 + miles

I did forget to mention my engines been out of my car three times in those 12,000 miles. Full disclosure.