351w headers

[det0326 179]

I'm at the stage of my build that i need to order headers. I have searched the previous threads and have not found an answer to my specific questions. I have a 69 mach 1 with aod tranny cpp power steering box and afr 165 heads. I called dougs headers and asked about the D669Y tri-y headers and he told me they would clear the aod and cpp box with out a hitch but the afr heads was the problem, something about the ports being raised higher than oem heads would cause the alignment to be off and they would not fit. Any you guys have the same set up as I have and tried to fit the doug headers on.

Does anyone have any advice as to what would fit without re-manufacturing them . Full lengths are out I don't won't them.

 

 

Thanks Dave

[det0326 179]

Update -   I had sent an email to tech department before I decided to call Doug's Headers and talk to them and as described above is what someone told me that the aod and cpp box is no issue of fitment but the afr heads were.  Well the email was different it stated that the afr 165 heads and aod were no issue but the cpp box they did not know if it would work around it or not.  Any ideas?

 

Thanks  Dave

[Mach1 Driver 560]

 Full lengths are out I don't won't them.

 

 

Thanks Dave

Sorry no help on the cpp box, but I'm curious why you don't want long tubes? I thought they were supposed to make it breathe better.

Which engine do you have? We may have similar builds and headers will be one of my problems with a 351w and 4R70W trans.

[det0326 179]

Sorry no help on the cpp box, but I'm curious why you don't want long tubes? I thought they were supposed to make it breathe better.

Which engine do you have? We may have similar builds and headers will be one of my problems with a 351w and 4R70W trans.

Hello Mach1 Driver  

 

 Nothing wrong with the long tube headers yes they will make more power.  What i have found in researching this is they almost always need to be cut bent or both to line up. They also hang lower and have a tendency to drag on everything but some brands may not I don't know. My engine may benefit more from long tubes but I just didn't want the hassle.   I have a 4R tranny also that I rob the internals from for my aod and the only difference I see in the two is the 4R is a little longer in the bell area because the converter is a little longer but otherwise pretty much physically identical  except for the electronic.  The 4R's converter is a little longer I guess because of the clutch that makes it a true lockup.

 

Dave 

[bryonbush 85]

Got Doug's with my 351w, edelbrock performer rpm heads, and 4R trans. Plenty of room by the steering box. I can get you a photo of you need. Even with a stock box, there should bee enough room for your box.

[My Mach 1 51]

You should talk to Stan at FPA. He makes an awesome quality headers.I have a 351w with Dart Pro 1 heads which have the exhaust ports 1.25 in higher that stock. The only headers off the shelf that would fit was Hooker Super Comps Long tube. but after hearing many posts on figment and scraping issues I bit the bullet and bought the FPAs. They were definitely pricey but fit perfectly and tuck up nicely under the body, no figment or scraping what so ever and speed bumps are not an issue.These are beautifully made and great quality. I have no regrets and Stan also told me that is I decided to go with an AOD down the road that these will not be problem. So I say call Stan at FPA ( Ford Powertrain Applications)....Good luck!

[det0326 179]

Thanks My Mach1. I have heard good things about FPA do you know the part number of the ones you purchased?

 

Thanks Dave

[det0326 179]

Got Doug's with my 351w, edelbrock performer rpm heads, and 4R trans. Plenty of room by the steering box. I can get you a photo of you need. Even with a stock box, there should bee enough room for your box.

thanks Bryon  for your reply  about the clearance around the steering box.  I called Doug's and they told me that the D996Y would fit around the cpp box just fine but the email that I had sent earlier finally was answered later on that day and the response was that they didn't know. So i just happen to think that I still have my old box so I measured it from frame mounting surface to the farthest point toward the engine and the same measurement on the cpp box, the best I could tell the cpp box stuck out from the frame rail about 1/8" more than stock box.   With information from that and what you so kindly gave me I ordered the D996Y tri-Y's from Doug's. Hope to get them in a week or so.

 

Thanks Dave

[Mach1 Driver 560]

 I ordered the D996Y tri-Y's from Doug's. Hope to get them in a week or so.

 

Thanks Dave

Dave I Googled that number and didn't get any hits- are you sure it isn't a D669Y?

[det0326 179]

Dave I Googled that number and didn't get any hits- are you sure it isn't a D669Y?

 

 

ha ha ha ha   My bad,  dyslexic or old age has set in.

 

Dave

[barnett468 418]

I use Remflex gaskets.

[det0326 179]

Thanks Barn 

 

I have seen you recommend them on other threads. What is the reason seal better fit port shape better or some other reason?

 

Dave

[Mach1 Driver 560]

Let us know how they fit when ya get um on there Dave, Thanks

[barnett468 418]

Thanks Barn 

 

I have seen you recommend them on other threads. What is the reason seal better fit port shape better or some other reason?

 

Dave

 

yes and yes, plus they have a high crush factor so they will in fact seal many warped headers PLUS they will never burn out like paper gaskets always seem to because they are 100% graphite . just dont bend them.

[det0326 179]

Got headers today .  Mostly fit very well . On drivers side had to drop steering link down and take transmission cross member loose and slide tail housing  toward passenger side to clear steering box once in place they cleared everything fine.  Passenger side only had to remove starter.

 

Dave

[barnett468 418]

you dont want the trans out of line with the differential.

[det0326 179]

you dont want the trans out of line with the differential.

You miss understood I only moved it over to gain some clearance between the engine and steering box then put everything back where it belongs.

 

Dave

[barnett468 418]

You miss understood I only moved it over to gain some clearance between the engine and steering box then put everything back where it belongs.

 

Dave

 

ah, xlnt.

 

which headers did you get so others know what might fit.

 

.

[lanky 44]

And how does one ensure that the transmission is in line with the differential?

[Mach1 Driver 560]

Glad to hear that everything fit well, so I'll be using those too. Just so Dave's dyslexia doesn't get the better of him again I'll just give the part number, it's Doug's D669Y ;) 

 

FYI "D669Y-1" is for 3" wide SBF bolt pattern on AFR 225cc heads and others and D669Y is for the rest

[barnett468 418]

And how does one ensure that the transmission is in line with the differential?

 

You can easily see it but you can also use a type of protractor.

[det0326 179]

ah, xlnt.

 

which headers did you get so others know what might fit.

 

.

Doug's  D669Y

[barnett468 418]

Doug's  D669Y

 

well that is certainly not a bad choice . they make good stuff . those flanges wont warp and i like the old school welded look . a lot of their stuff is made in mexico now but who cares . they are made on jigs.

[Mach1 Driver 560]

Hey Dave can we have some pictures? Is it to a point that you can drive it yet?

[det0326 179]

Hey Dave can we have some pictures? Is it to a point that you can drive it yet?

Yes I can get you pictures of the headers on the car but that is about as far as I have got, trying to find an H pipe to fit the headers now .  Seems that Doug's only makes the X cross over haven't seen an H pipe on his site. I wonder if the JBA H pipe for there tri-y's will work on the D669Y.

My car is quite a ways from being drive-able yet.  Needs rear and front glass put in and all the interior.  Ordered the headliner the other day and got it yesterday (Sat) and was about to start the install and noticed one of the seams/loop for the bows was sewn on crooked  I mean measuring from one to the other the crooked one was off by 2 inches so will have to wait another few days for replacement.. then maybe I can get the glass in.

 

Dave