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Author Topic:   Headers vent
Fastback68
Gearhead

Posts: 874
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 11-23-2001 09:57 AM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
I just want to pass on a bit of hard-earned wisdom. If you've never fitted headers before, and if you're going with Doug Thorley Tri-Y's with a 68/C4 combination, prepare for hell! Having done it once, I could probably cut the time required in half, but even so, I wouldn't recommend it to anyone. Headers????? The only reason I'll have 'em is 'cos I've spent the best part of a day fitting them and I'm not about to take them off again! This is the first and last time! Sheesh!!!
Thanks for listening

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mellowyellow
Gearhead

Posts: 4608
From: So. Fl.
Registered: Aug 2000

posted 11-23-2001 11:06 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
The original tri-Y's were made for 6566 Shelbys w/o ps. Did you have to make a dimple where they hit? Have yet to put them in a 67-8 with P/S but they do require some fitting on driver side. Remember a buddy spending a couple hours of curse time! They're worth it. I have one of those P/S drop brakets and am going to add some strength to it. I saw one of those break.

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Moneymaker
Administrator

Posts: 13182
From: Lyons, IL, USA
Registered: May 99

posted 11-23-2001 12:48 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Yes Pete, the Header manufacturers supplied P/S drop bracket is definatly very weak and needs to be reinforced.
Also there is nothing but nothing that will increase performance on a stock 289-302 like a set of headers, so FB68 all of your efforts were well worth the time.

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00 & '01
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mustangs68
Moderator

Posts: 14326
From: Hampton,Virginia,USA 1968 Fastback & 1995 Vert MCA#39406 M&M #12
Registered: May 99

posted 11-23-2001 02:37 PM     Click Here to See the Profile for mustangs68   Click Here to Email mustangs68     Edit/Delete Message   Reply w/Quote
I put a set of Doug Thorley on a '69 351W MachI and I swear I'm going to hell for all the cussing I done when installing..thats was 1970 too

we just put a set of Hedmans on Jasons 289 '67 Coupe and it was a breeze,sweet and ez.
sam

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Fastback68
Gearhead

Posts: 874
From: Sucat, Paranaque, Philippines
Registered: Jul 99

posted 11-23-2001 09:00 PM     Click Here to See the Profile for Fastback68   Click Here to Email Fastback68     Edit/Delete Message   Reply w/Quote
These are the new Thorley Tri-Y's -- nothing like the old ones. And yeah, I've got PS
Here's my chief tip. The salesman told me fitting them would be a breeze. OK, scrub that! Then the instructions say that for some applications, you may need to lift the engine slightly. Well, my application was definitely in that category. BUT the engine doesn't need to be raised "slightly". Get the fattest block of wood you can find and raise that engine as high as you can!!!
This morning I'm reviewing the mess ... gasket sealant everywhere!
Sighmon

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