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Discussion Starter #1
What are some good performance/ affordable heads for 289 that can be used with headers?
 

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What heads do you have currently and what is your budget?

Do you already have headers? If so, what type and primary tube size?

What does the rest of the combo look like and what will you be using the car for?



Pat
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Discussion Starter #3
I have a 67 289 in a 65 fastback body with stock heads. The car is to be a street vehicle that I want some added performance. I have 600 cfm holley carb, edelbrock rpm intake, hooker comp headers . I am trying to stay in the price ballpark of the windsor jr. I am trying to evaluate what I can do to increase performance and the heads look to be the weak link. The windsor jr looked to be the way to go until I found out about the header problem.
 

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I've got iron GT40 heads (on a late model engine), I hear you can get them pretty cheap. I'm not talking about the GT40P heads, those have spark plug issues. My hedman headers work fine with my GT40 heads. I don't know if you can use them on a 289 (Pat do you know??).

Get a cam too and you will be fine. Gears would help too.

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Evan
67-5.0L
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Yes they'll work but aren't a big step up from regular 289/302 heads...would be OK to build if one already had them but I wouldn't go out and buy them new....



Pat
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Personally, I'd spend the 150-200.00 more and open up Pandora's box of possibilities....

I've received good service from my Performer RPM's over a number of seasons of active racing as well as dormant seasons...

Lots of room to grow there....I still use mine in as-produced condition...

See this article on cylinder head flow for more info and comparisons...

IIRC, the Jr's have a dual bolt pattern for headers in case you want to run big tube headers in a racing situation....didn't realize stock-style headers wouldn't work....anyone?

Another option is a set of ported C9-D0 Windsor heads....nice performers with a OEM quality...I used those on my last 302 racing engine with 1.94 and 1.6 Chevy valves...durable performer, operating in the 4-7.5K range.

Read up as much as you can on heads before plunking down your money, both on performance and durability...

I bought my RPM's back in the mid 90's and didn't have access to all this great info...I just lucked out...*G*

Pat
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I run iron Windsor Jr's with a set of tri-y headers. Contrary to popular belief they fit just fine. I had to make a couple small mods and thats all. If my tri-y's fit then the 65 mustang 289 super comps should fit the same. Summit said they would fit too but I haven't gotten a set to try yet. You will have a couple spark plugs that are tight where the tubes cut back sharply to clear the shock towers. I have to put the headers on loose and start those before I tighten the headers down.

I've had so many problems with these heads that I'm terminally PO'd at World Products. I felt a little better about the heads after reading Ford Muscle's latest port and flow article on them. I will probably try to reproduce that effort as best as I can to see if I can get my money's worth out of these things.

You can see my 65 fastback at: http://hottarod.stangnet.com/
http://members.aol.com/macstang/Gifs/macstang3.jpg
 

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Discussion Starter #8
What type of problems have you experienced, would you recommend these heads or should I start looking at another manufacturer and if so who?
 
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