[fordracing]

i have a 302 ford i dont know which headers would perform and sound the best im thinking of going with tri y headers or dynomax full tube headers any info would be great thanks jj

[78 monte]

I only trust standard long tube headers.Tri Ys seem to me anyway rather restrictive like a manifold.Iknow they say all about scavanging and what not,but I dunno.
I'm a chevy guy but I was allways told that Fords like equal length headers anyway.

[fordracing]

thanks monte that helps alot

[crazy larry]

speaking from personal experience, do not buy the cheap **** dynocraps. their higher end headers might be ok, but the flanges on their cheapies leave a whole shiitload to be desired......
what are they (headers) going IN?

[woodz428]

I've run both types over the years and if you're primarily using it as daily transportation I'd go Tri-y's. They will give you a stronger bottom end and more under car clearance. That's what came OEM on the Shelby's and he could have used what ever he wanted, he opted for more bottom end.

[1BAD80]

I agree with woodz428 plus I have run the Try-Ys for year's without any problem. If you get the weld on one's from Flowmaster you can tune for HP or Torque depending how you position them for scavenging.

[4 Jaw Chuck]

Tri Y's work well with low overlap cams and really boost the bottom end..mid range gains can be impressive +50 FT/LB's on some engines.

Long overlap cams build power over a narrower range and higher up the rpm scale and get the most benefit from a set of equal length larger tubes...course you can't pull a trailer with it.

Most mild cam engines really need Tri Y's for the street. Use equal length tubes with long overlap cams to utilize the added flow capabilities of the longer duration valve opening.

Somewhere between 270-280 degrees duration is the range where you have to make the decision to go either way.

[fordracing]

the headers will be going on a 302 ford in a 1968 mercury cougar it has

edelbrock performer intake
holley 600 carb
comp cams 270h magnum cam
68 302 stock heads with 1.6 roller rockers
borg warner t-10 4 speed tranny
competition clutch
8" rearend with 3.00 ratio posi track
thanks 4 the info

[302 Z28]

There is some valuable information about choosing the right header for a a pecific application on the Sanderson headers web site. Everyone can offer an opinion about which header works best, but it depends on your particular application.

Vince

[4 Jaw Chuck]

I would run the Tri Y's with the stiff gears you have out back.

[RJL]

Thorley headers are outstanding! Superior quality and performance. I believe they would work very well with your engine. Run a 2.5" exhaust with either a x or h pipe and some good mufflers and you will be rocking. The part # is THY268 for your car. Good luck.