>Eddie, just wanted to know how the cat worked out. I live in
>mass and was curious if i just cut out the 2nd cat and put
>in that summit cat if i would still pass emissions testing.


it should still pass emissions even with a y pipe ..

 

I have a 1986 f150 with the offy intake, dynomax headers,holley 390 carb, and turbo mufflers with true dual exhaust. The headers will not seal up and I keep blowing up the muffler on the first three cylinders. Do I need a crossover pipe? should I junk the whole system and go back to stock? Need help!!!!!!

 

You do not need a crossover pipe. The purpose of a crossover is to even out the exhaust pulses in a V8 caused by uneven fireing order. As this isn't a problem on an inline six (unless you have the 1.3.5-2.4.6 headers that add the uneven pulse to sound like a V8) so you don't need one. That wouldn't cause your other problems anyway.

As to the gaskets, i'd check to make sure your header isn't warped and that you torque it correctly. And as for your mufler blowing out, I have no idea. When you say "blowing out" what do you mean?


-=Whittey=-

 

Whittey,
as far as blowing out I mean that the truck backfires and blows a big hole in the side of the muffler! Should I jet the carb down? I have elaborated on my problem more in the hiperformance problem post in this section.

 

Yah, backfiring (assuming that your timing is all good) would be a jetting issue.


-=Whittey=-

 

 

I had problems with my Clifford headers not sealing to the head. Turned out it was the Fel-pro 1piece gasket. When I matched it up to the head I found that the number 6 port did not match up to the port in the head it was off by about 1/4 inch. I used a Clifford gasket and they matched up perfectly. The Fel-pro printo seal gasket might also work since it comes in several pieces. Has anyone else had this problem?

 

Where can I find a header with the 135 246 i want my truck to sound like a v8. I live in Kansas and we don't have smog test I want to put a dual outlet header with two glasspack running into 3" pipe to the longest tips i can get at 45 degree behind the rear wheels. I want to know if this would make it sound like a v8 or not if anybody else has this set up tell me if it sound good.

 

I went with the 87-96 Ford factory exhaust cast iron header. They are two 3 to one. Fits real well and no exhast leak problems. Cost me 60 bucks at the local salvage yard.

 

Hello Again!

I have a question that I think I have seen the answer to here before in another forum, it has to do with aftermarket intakes and stock exhaust manifolds.

Correct me if I am wrong but it is possible to use an aftermarket intake with stock exhaust manifold(s)? I would like to open up the head with SBC valves, I already have a Crane cam and hi-lift valve springs, and plan to get a Holley 390 4-bbl carb to use with the Offy intake (dual plane).

Or would the header be the best solution for breathing? I'm looking at towing an 18.5 foot travel trailer, my engine/truck is a '79 and I don't have to worry about smog-****'s up here in Canada. I want to get the head into the machine shop soonest, and order the carb/manifold/header but if I can get reasonable performance and reliability with the stock '87-96 split-manifolds/390 carb/Crane Cam/SBC valves and Offy intake, I could save myself around $300.00 CDN, or even more if I don't have a brainfart and order the ceramic coated header.

As far as sound goes, my truck is a truck, as long as it doesn't sound like a tractor, I'll be happy. The local muffler shop does good work, and since the engine needs back pressure, I can't see doing 3" cat-back or anything like that.

Ahhh, I'm waffling! You guys don't need my rambling on and on, but what would you do?

 

Big Six Guy,
My '79 300 has the Offy Comp "C" intake and a set of '89 Cast iron dual exhaust manifolds. I had to grind one small nub off one of the exhaust manifolds to make it clear the intake. No problem.
Now remember that this eliminates the manifold heat. Since you are way up North you might need some sort of heat to keep from icing up in the winter. Scrounge up a water heated carb spacer. Clifford makes them and old Ford FE V8's used to have them so you might find one used.
I used the iron manifolds because I got sick of messing around with leaking headers long ago. Also, I have stock valves and a real conservative cam.
Adios,
Brett