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66SuperStang

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Discussion starter · #1 ·
Hi all,

am swaping 289 to 302
Stock engine end, but i want to add heads, cam and headers
185 AFR heads maybe
E-303 comp cams

but the big deal with HEADERS!!
who goes with same application ?
and which headers i can go with without hitting stuffs down the car ?
am in big trouble anybody can help me with that.
 
Whether it is or not . . .how can you come and ask a question and not give all the information to the people to whom you are asking?
 
first, you get what you pay for, tri-y's are typically good. What fits for an automatic C4 or AOD, will not fit for a manual, and visa versa. Know you're set up before you buy. I have thorley headers on my 302/C4, love em, have had them on several of my cars, but they're not cheap. Heavy gauge tubing with thick flanges. Have never had an exhaust leak or exhaust gasket blow. Also, those AFR185 heads, better check your piston to valve clearance if you plan on running any serious compression.
 
Wow ! Pete takes no prisoners (even those with only 4 posts). My hats off to your tough love, Pete. I'll just add some more of the tough love to the OP, get a shop manual if you don't already have one. Nothing in there about headers, but you'll need it anyway.

Also, try the search function, you're sure to find aome usable information regarding header fitment. BTW, you can get tri-y's well suited to a 347 engine, but they won't be the cheapie variety. Try Dougs, if they still around.

Z

PS. Pete, I'm going to have to up my cranky-old-man game to stay in your league. Watch out, here I come !

; )
 
The E 303 is a Ford Racing roller cam grind. It is not made by Comp cams.

I run Hooker Supercomps and deal with the "hitting things". A set of adjustable engine mounts helps a lot but ground clearance is minimal. You do not want to be running over any speed bumps with these headers. They do perform very well though.
 
Well a change of approximately 15% in displacement size could have an effect with the correct header choice. A point, you just can't leave out :)

OP, is this an '85-up roller block as well?
 
Discussion starter · #10 ·
first, you get what you pay for, tri-y's are typically good. What fits for an automatic C4 or AOD, will not fit for a manual, and visa versa. Know you're set up before you buy. I have thorley headers on my 302/C4, love em, have had them on several of my cars, but they're not cheap. Heavy gauge tubing with thick flanges. Have never had an exhaust leak or exhaust gasket blow. Also, those AFR185 heads, better check your piston to valve clearance if you plan on running any serious compression.
i dont care about price, i need good quality,
i checked doug's headers its prety good, and its in
my choices.
my brother will check the clearance , he told me about that.
can i have some photos for installed headers?
thanks bro
 
Discussion starter · #11 ·
Wow ! Pete takes no prisoners (even those with only 4 posts). My hats off to your tough love, Pete. I'll just add some more of the tough love to the OP, get a shop manual if you don't already have one. Nothing in there about headers, but you'll need it anyway.

Also, try the search function, you're sure to find aome usable information regarding header fitment. BTW, you can get tri-y's well suited to a 347 engine, but they won't be the cheapie variety. Try Dougs, if they still around.

Z

PS. Pete, I'm going to have to up my cranky-old-man game to stay in your league. Watch out, here I come !

; )
I'm just a humble new member , I already looked for Doug headers , but there are some people say not all the headers can be mounted on the after-market heads, my question was about the headers , which one can be mounted without problems on the after-market's heads ?
Thank you
 
Discussion starter · #14 ·
The E 303 is a Ford Racing roller cam grind. It is not made by Comp cams.

I run Hooker Supercomps and deal with the "hitting things". A set of adjustable engine mounts helps a lot but ground clearance is minimal. You do not want to be running over any speed bumps with these headers. They do perform very well though.
It's true , my mind is not with me these days lol:crying:
What I care about is performance.
Is it difficult to install ?
What are the fabrication that you used to install the headers ?
 
Discussion starter · #15 ·
Well a change of approximately 15% in displacement size could have an effect with the correct header choice. A point, you just can't leave out :)

OP, is this an '85-up roller block as well?
yes, its '91 302
in ur opinion, which best heads will fit with this application?
 
I'm putting a set of MAC long tubes in. Nicely made, uses a ball socket connector on the collector. They tuck up nice and tight. The stock clutch linkage fits well and it pretty easy to install with the headers. They will clear the PS without the typical drop bracket and they seem to fit with my Gt40P heads. I did have minor fitment issues. Mostly with #6 tube. It's really close to the block by the ball stud for the clutch equalizer. I had to put a very slight ding using a 1 1/8" impact socket to make a nice indent in the tube. The other issue with #6 tube is since I'm using a roller cam motor I'm using one of the brackets for the engine side ball stud that bolts to the bell housing. The bracket on the bellhousing side over hangs the side of the bell housing interfering with the tube. I had to trim the bracket back to follow the bellhousing contour and the engine side, same issue. The bracket has a lot of extra material above the ball stud that was getting in the way. The #5 tube slips in making it a lot easier installing the header. I have 20" between the floor and the rocker panel. The header will slip in without unbolting anything other then the clutch linkage. I would suggest though unboting the motor mount and jacking the motor up slightly if you're worried about scratching the headers.

All in all, they seem to clear everything, fit nice. I would recommend them. This is the driver's side test fit on a P head.

Image


Image


Image
 
Discussion starter · #18 ·
I'm putting a set of MAC long tubes in. Nicely made, uses a ball socket connector on the collector. They tuck up nice and tight. The stock clutch linkage fits well and it pretty easy to install with the headers. They will clear the PS without the typical drop bracket and they seem to fit with my Gt40P heads. I did have minor fitment issues. Mostly with #6 tube. It's really close to the block by the ball stud for the clutch equalizer. I had to put a very slight ding using a 1 1/8" impact socket to make a nice indent in the tube. The other issue with #6 tube is since I'm using a roller cam motor I'm using one of the brackets for the engine side ball stud that bolts to the bell housing. The bracket on the bellhousing side over hangs the side of the bell housing interfering with the tube. I had to trim the bracket back to follow the bellhousing contour and the engine side, same issue. The bracket has a lot of extra material above the ball stud that was getting in the way. The #5 tube slips in making it a lot easier installing the header. I have 20" between the floor and the rocker panel. The header will slip in without unbolting anything other then the clutch linkage. I would suggest though unboting the motor mount and jacking the motor up slightly if you're worried about scratching the headers.

All in all, they seem to clear everything, fit nice. I would recommend them. This is the driver's side test fit on a P head.

Image


Image


Image
thank u so much with these info.
u realy helped me with these pics
can i bolt this headers with afr heads without problems?
 
The exhaust ports on the AFR165 and 185 is in the stock location. The exhaust ports on the AFR195 and 205 are raised .125". The exhaust ports on the AFR200 are raised .375".
 
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