347 Weber

Prestidigitator · #1 (**permalink**) 03-03-2007, 04:10 AM

Greetings!

First, I want everyone to know who reads this I love Cobras, however I can NOT tell a lie, I own a Mustang. I was given the idea to come over here and ask a question I have about tuning.

I own a 68 coupe with a TCP front and rear end, I will be using it on the weekends (never to see bad weather) and once in a while in the middle of the week, entering it in car shows (not to win) terrorizing the local chevy contingent and taking it out to the drags every so often as well as long drives. I figure between 2000-5000 miles a year.

I am now at the point of putting a motor in and have decided to go the “turn key” crate engine route. I would like a 331/347 stroker motor and I am looking for the following input…

There is an engine company out there that I imagine most if not all of you are aware of called T & L engines. They have a beautiful 347 weber set up and the price is pretty incredible. Regarding what I am doing with this car how do you feel about putting this type of motor in it?

Does anyone know how difficult it is to tune these as compared to a 4 barrel?

My understanding is with today’s technology it’s not to difficult and that once dialed in it would only need adjusting about once a year… yes or no?

Regarding T & L, anybody out there have a good or bad experience with them regarding any type of motor you purchased from them?

Thank you all.

tamanaco · #2 (**permalink**) 03-03-2007, 05:37 AM

I've looked at the T&L engines...doing investagation myself. Here is a link on the only refereance I've found. http://www.ffcobra.com/ubb/ultimateb.../t/000041.html

The weber unit looks nice!

ENTDOC · #3 (**permalink**) 03-03-2007, 06:26 AM

assuming the cam is correct for the webers, tuning should be no problem

Prestidigitator · #4 (**permalink**) 03-04-2007, 04:01 AM

Thank you for the replies, seems like T & L has had nothing but positive responses.

ENTDOC, could you please enlighten me on what you mean by the correct cam?

Thanks.

quickjack · #5 (**permalink**) 03-05-2007, 08:50 AM

A cam with very minimal overlap is crucial for street use, because at anything less than WOT the Webers will be spitting fuel and fire otherwise.
IR systems have no common plenum or anti-reversion provision which typically help a 4 bbl set up to even out.

G.R. · #6 (**permalink**) 03-07-2007, 08:24 PM

Webers are a carb for each cylinder and they need to be in tune with every other cylinder...once you've gotten them in tune ... Wow what a kick to drive. nothing like a 4-bbl...no cranking and stumbling, sputtering, coughing and pharting for 10 minutes until the engine gets warmed up like happens with a lot of engines in these cars. I like mine

snakebitekit · #7 (**permalink**) 04-06-2007, 08:56 PM

G.R. I looked at your pic's WOW! Those webers, do you use an air filter? Did you have any hood clearence problems?
Dennis

G.R. · #8 (**permalink**) 04-06-2007, 09:02 PM

Yes I do have airfilters and have had no problems when they are on... though I understand others have had issues when using them. Of course I'm not trying to squeeze every last bit of HP out of my car either.
I have no clearance issues with my hood.
Thanks for the kudos

snakebitekit · #9 (**permalink**) 04-06-2007, 09:04 PM

you need less of an overlap because you need more vacum. the more the overlap the less the vacum. Webers have a real problem with that. I have sent all the weber sellers I could find and none of them have bothered to respond regarding this, T&L did.
I am building a ERA FIA (ordered), they tell me their headers will not fit the dart heads. Does anyone have a supplier to lead me to.

Dennis

snakebitekit · #10 (**permalink**) 04-06-2007, 09:08 PM

G.R.

I am not sure about all the talk of fuel returns and electric fuel pumps. I have been led to believe that a mechanical is the best for webers. What are you using.
Sorry if this was answered in a previous post
dm

ack fia · #11 (**permalink**) 04-07-2007, 06:20 AM

I use an Edelbrock mechamical for mine and it works just fine. An additional virtue is that if you get the #1750 you can get a Bottom feed pump plate #1798 so you can have options as to where the inlet can be placed. Bought mine at Summit.
Pat
P.S. On the ERA FIA with a std. fuel line you can get a 57 to 62 Corvette flex fuel line and it bolts right up.

ENTDOC · #12 (**permalink**) 04-07-2007, 06:41 AM

I use a Holley blue electric pump with a regulator set at 3 lbs, works fine

snakebitekit · #13 (**permalink**) 04-07-2007, 08:17 AM

ACK FIA, what type of heads do you have? I was told that ERA headers will have fit problems on dart heads.
dm

G.R. · #14 (**permalink**) 04-07-2007, 12:38 PM

Quote:

Originally Posted by snakebitekit

G.R.

I am not sure about all the talk of fuel returns and electric fuel pumps. I have been led to believe that a mechanical is the best for webers. What are you using.
Sorry if this was answered in a previous post
dm

I'm using a Ford Racing mechanical pump. I had a Holley electrical pump when I first got the car and it started leaking like a sieve so I canned it a couple years ago in favor of the mechanical pump. I'm using a Holley fuel pressure regulator set at 3.5lbs with an Aeromotive "dry" gauge my Webers needed just a bit more fuel pressure.

AlexFIA · #15 (**permalink**) 10-28-2007, 11:05 AM

Snakebit, how did the T&L engine work out? I am where you were 6 months ago. I ordered an ERA FIA and am contemplating a T&L 347 with the webers. You stated that the Dart heads would not work with the ERA headers. Was this true and if so, where did you find a supplier for the headers? How happy are you with your engine? When I talked to T&L they recommended an electrical fuel pump, but sounds like all on this post decided on a mechanical set up. Any and all replies welcome especially from the weber crowd.