Thread: Wanting to upgrade a 289 in a 65 Galaxie

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Instead of using aluminum heads what if I was to go with a set of GT40's?

Originally Posted by RonnSulli

I may go with Jeff's ideas. Once upon a time I wanted a street machine. But now since I got some little ones I think a nice cruising engine would be the best way to go.

I'd say you're making a good decision, all things considered.

Originally Posted by RonnSulli

Instead of using aluminum heads what if I was to go with a set of GT40's?

Not a worthwhile investment,give this a good read:Five.Oh Info : The Ultimate Ford GT40 and GT40P Cylinder Head FAQ also both the aluminum heads and the 289 heads have an adjustable valve train,the GT's do not as you can see the HP gains would be minimal too, in fact possibly less than the stock heads because the 289 heads have more compression.More education here: http://www.mre-books.com/interchange/interchange5.html Now that being said since the early 289 heads are almost the same as the the 289 Hi-Po's there is a budget trick that has been done to improve flow when you get that valve job done you can use these:1 84" Intake Valves SB Chevy 305 V8 SBC Small Block Stock Steel Set of 8 | eBay You do not want to go larger because it would involve more machine work you can do some port matching and minor porting to the exhaust as the exhaust is a weak link with stock heads,this is where the aluminum heads really pack some of their punch,but bottom line the Flo-Teks are the real bargain.Like most of us down the road we think this is fun but "more is better" those heads can be swapped on to a 351W

you'll probably need that special bolt set for using 7/16 bolts thru them 1/2 holes

Originally Posted by jerry clayton

you'll probably need that special bolt set for using 7/16 bolts thru them 1/2 holes

These adapter bushings:http://www.summitracing.com/parts/edl-9680/overview/ 289-302 head bolts are 7/16" most aftermarket SBF heads are drilled for 1/2" bolts used on 351W's.

Maybe this could interest you?

Trickflow alum twist wedge heads set up

Originally Posted by 34_40

Maybe this could interest you?

Trickflow alum twist wedge heads set up

Those are some wicked heads. I do like them

Originally Posted by RonnSulli

Those are some wicked heads. I do like them

They aren't to far from me.. if needed, I can go put an eye on'em.. maybe even help get them into ups or??? If I wasn't content for the moment, I'd snag'em for a future project. They are listed as a big port so that should help you out on a street motor too.

I would love to have them. But maybe someday. For now I'm going to have to go the cheaper route on the engine and use some of Jeff's ideas. I'm going to have to spend more on paint and interior first then maybe after that then I could always swap out the 289 with something bigger and better.

Is the current 289 still running ok????????????

It is, however I noticed some blow by coming from oil breather. I am hoping that's just the vacuum line coming from the pcv valve. Gonna check that out as soon as it warms up again. Other than that it sounds smooth and seems to run good.

Drive it---

lol i will. i just want to give her some pep.

Originally Posted by RonnSulli

this is what she looks like for now.

I used to race "stock" classes with 302's and 289's, here are some low buck suggestions that I did back in the day. First off we had to run under a 480 lift cam so we went with a comp cams 480 with 270 duration. For valve springs we used 429 "red colored" stock springs with 351c retainers and 351w keepers. Then for heads any of the 351w 68 through 74 will bolt on no problem they have a little larger intake port about 20cc, and 1.84" intake valves stock. The exhaust valves are larger too with a 1.54" stock , we just used the stock 289 bolts never had any trouble where the heads are steel ya know. I would normaly take a straight cut off the heads at .030" and then angle mill them .030" to the point where the two little ebrows on the outer head surface are flush . This will put you around 10 to 1 compression plenty on pump gas. As far as porting the 351w head doesnt need any on the intake port, however the exhaust port you can get in there and wack the emissions bump off the roof of it and then bell mouth it to match a mr gasket header gasket. An 1 5/8 primary header set up is an absolute must for this type of set up, it will be a complete dog with out headers lol experiance showed me. The best intake manifold i found was the dual plain for getting a 4 door 63 galaxie to come off a corner on a dirt track, single plains kill too much torque and dont help top revs much. The intake manifold must be a 302 as the width of a 351w intake is too wide. As far as port maching the intake manifold to the 351w heads use the 351w intake gasket and port the manifold to match. This can all be done with the engine in the car and tipicaly these motors peaked rpm at about 6000 and the torque was improved a bunch over stock. The best thing was I got 18mpg with one of these set ups in a 69 fairlane street machine and it sounded cool and the cam smoothed out at about 1250 rpm, very street / hyway frendly for little to no money on top of 100k mile short blocks lol. Hope some of this helps