289 needs more power!

Aiden Adams

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Apr 30, 2019
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Whats up everyone? My name is Aiden and my 67 coupe is named Amelia! I've had her for coming on 5 years this June. I built her all with my dad. She's got a 200 straight 6 and I am ready to move up to that 289. I have the motor but I am looking to do more of a performance build this go around. I am wondering what modifications you guys recommend for adding horsepower. I am open to any ideas. This is the beginning of this process so I am only starting with research. In the meantime I need to get her back up and running because I sure do miss driving her haha.
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Realmongo

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Before you even think of going that route, you will need to upgrade your suspension, brakes, and rear axle to handle the weight and torque.
 
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rustaddict

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What transmission will you use behind it? What kind of shape is your 289 in? Will it need to be freshened up inside or is it in good enough shape already that you can just add your go fast goodies and move on with your project? You should benefit from an aluminum intake with a small 4 barrel, a mild cam and if it were mine I'd add some better flowing heads. At least some GT 40s. Be careful not to buy too big of a cam for that small V8 or it'll be a dog on the street. I'd call or email whoever your favorite cam company is and let them recommend one for your application. Also, be careful which intake manifold you choose if you plan on keeping your stock hood. I upgraded my 68 coupe from a 200 to a 302.
 
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2Blue2

will be trying this sex one when I can find it
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go for the whole edelbrock RPM kit with heads, cam, manifold, and carb.
They have already done the engineering for you.
Would be better that playing guess and check on your own bank account.

Or Crites has a 460ci install kit you might consider. could be done for about the same price.
 
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Aiden Adams

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What transmission will you use behind it? What kind of shape is your 289 in? Will it need to be freshened up inside or is it in good enough shape already that you can just add your go fast goodies and move on with your project? You should benefit from an aluminum intake with a small 4 barrel, a mild cam and if it were mine I'd add some better flowing heads. At least some GT 40s. Be careful not to buy too big of a cam for that small V8 or it'll be a dog on the street. I'd call or email whoever your favorite cam company is and let them recommend one for your application. Also, be careful which intake manifold you choose if you plan on keeping your stock hood. I upgraded my 68 coupe from a 200 to a 302.

Thanks! all great things I will look into. I appreciate your help.
 

wicked93gs

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I would go with a 302 roller block, bolt on some GT40P heads, and a nice roller cam...maybe some headers or HiPo manifolds...pretty easy to hit 280HP that way for less than $1500
 
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billison

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i Would absolutely skip the 289 and go 302. The fox guys have parts all day long. Maybe even look into a 351 so you have room to grow.
 
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rustaddict

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You may be able to find a deal on a running explorer 5.0 and find little bit hotter roller cam used and add an intake and carburetor. The mid-late 90s explorers already have gt40p heads on them.
 

wicked93gs

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You may be able to find a deal on a running explorer 5.0 and find little bit hotter roller cam used and add an intake and carburetor. The mid-late 90s explorers already have gt40p heads on them.

Didn't the explorer engines have a lower compression ratio though due to piston differences?(I could very well be wrong, but for some reason that is the reason I have it in my head its better to use the heads alone on earlier roller blocks, or even non-roller blocks if you like flat tappet cams and oil additives(good option if you want an updated 289))
 

D Durden

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Aiden, WELCOME TO THE FAMILY!!!! Love the car!

Here's my 10 cents (my 2 cents are free). I started out with a 289 in my 1965 (Peg). I did all the go fast goodies stuff (intake, carb, cam, exhaust, MSD, etc . . .). It was a lot of fun building that little motor up over 18 months. To get me through college (I was 16 when I got her), my parents insisted on a "reliable engine" because I was driving 5 hours each way to school. So, they had a "pro" build a 351W that was solid, reliable, and not that "racing motor".

So, the guy IS a pro, and that motor was head and shoulders over the "hot" 289 I had. It was a different world, okay? If you REALLY want some fun power in a fun car, as much as I love the little 17 squared motors (AND I DO!), for a street car, it's just tough to beat some extra cubes for about the same price and problems. You can get fun out of it without having to turn up the rpm's, they don't work as hard, and it doesn't cost much more (if any). Just something to think about . . .

Oh, got out of college and that "pro" built another Windsor for me . . .409 stroker . . . solid lifter . . . beast of a motor . . . in 1994. That same motor is about to get a Tremec TKO, I think. :) Go with the Windsor if you can. :)
 
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rustaddict

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Didn't the explorer engines have a lower compression ratio though due to piston differences?(I could very well be wrong, but for some reason that is the reason I have it in my head its better to use the heads alone on earlier roller blocks, or even non-roller blocks if you like flat tappet cams and oil additives(good option if you want an updated 289))
I'm not 100% sure. I didn't think so but you have my curiosity now. I plan to investigate. Weren't the old fox body 5.0s about 9:1 ?
 

redNfast

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Wecome on Adien

go for the whole edelbrock RPM kit with heads, cam, manifold, and carb.
They have already done the engineering for you.
Would be better that playing guess and check on your own bank account.

Or Crites has a 460ci install kit you might consider. could be done for about the same price.


I like the crate idea, especially with todays after market offers..... Having a drop in motor with whoop=ass built & tested. A happy camper the owner will be. Sorting out the suspension will take some time all by itself .
 
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Noobz347

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Didn't the explorer engines have a lower compression ratio though due to piston differences?(I could very well be wrong, but for some reason that is the reason I have it in my head its better to use the heads alone on earlier roller blocks, or even non-roller blocks if you like flat tappet cams and oil additives(good option if you want an updated 289))

Even if that were true ( I don't recall hearing that before but I couldn't say for certain ), there's no part of that Explorer long block combination that isn't superior to earlier setups, in nearly every way.

Let's assume for a moment that the compression on an explorer block is slightly lower than... [what]? :shrug: If N/A, the OEM heads gotta go anyway soooo...

I say we take a Junkyard cheap-o fuel-injected [whatever], slap some new gaskets on it, and boost the crap out of a fuel-injected street beast for less than what we could build an equivalent non-roller to be anywhere near that. Now, we're in the 320-340 HP range depending on what kind of deal can be found on a used and complete supercharger kit.

Flat tappet motors are good for three things: Concourse restorations, converting to roller or holding beer cans in the garage. :p
 
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wicked93gs

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Even if that were true ( I don't recall hearing that before but I couldn't say for certain ), there's no part of that Explorer long block combination that isn't superior to earlier setups, in nearly every way.

Let's assume for a moment that the compression on an explorer block is slightly lower than... [what]? :shrug: If N/A, the OEM heads gotta go anyway soooo...

I say we take a Junkyard cheap-o fuel-injected [whatever], slap some new gaskets on it, and boost the crap out of a fuel-injected street beast for less than what we could build an equivalent non-roller to be anywhere near that. Now, we're in the 320-340 HP range depending on what kind of deal can be found on a used and complete supercharger kit.

Flat tappet motors are good for three things: Concourse restorations, converting to roller or holding beer cans in the garage. :p


It may not be true...just seem to recall reading it somewhere and it seemed to make sense at the time as one of the reasons the GT40p motors were rated the same as a 5.0 Mustang GT 10 years older even though they had better heads and intake manifold. But yes, even so it will make more power than a tired old 289(much as I love the old 289s) carbed or EFI.
 
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If you have the 289 it is a fine engine to build. With all the 302, 331 and 347's out there people are shocked at how well my little 292 (289+.030) runs. Flat top pistons, flat tappet .484/.512 lift, 216/228 duration cam, AFR 165 heads, Performer RPM intake ,Holley 600 and full length headers. This drives a 3.55 rear end with T5z transmission. It pulls well over 6,000 rpm. It ran well with some 1965 home pocket ported heads, but the AFR's really did wake it up.

If you do not have an engine, and just want to buy something to stick in there, a 302 roller is tough to beat.