Oh I refuse to let someone of your nature run me away.Hate on Hater,can you see me now!!
289 horsepower capability
I was woundering if anyone knows the horsepower capability of a natural aspirated 289 cube inch block using ported hipo 289 heads with 1.94/1.60 valves with flat top pistons,bored .030 over and a good roller cam.
21 - 40 of 50 Posts
See FEandGoingBroke you stated your opinion as others has some on the high side, some lowside and some along there with you and you still want to bring up old spilled milk,who's whining now,never the less,as I stated if the combo I stated at the top of this post won't cut the mustard,I do have the capaibility lying around on the shelf of two more set of aftermarket Aluminum heads that I know will get me in the ball park of what I asked,just testing with old school,because I also have it laying around,Now What!! again,Thanks Guys for your opinions,you can never get enough knowlege.
Not a hater dude. If you think you can make 450 HP then go for it! 
It had been a couple day's since you commented I thought you left.
How come you won't say anything until I stick a finger in your ribs?
It had been a couple day's since you commented I thought you left.
How come you won't say anything until I stick a finger in your ribs
?Because some of use have to work to support this hi-performance hobbie,I haven't found a speed shop that gives this stuff away.
And you won't find a shop giving it away, you put a budget on your build and you will have sub par performance/results. Get with Woody over at Fordstrokers.com. 350rwhp is the norm for 302's and 400+rwhp is the norm for 347's and very streetable too. It's all about the combination and cam events going on. I speak from my own rushing of my build, my motor has so much more potentional...currently have 280-300rwhp maybe.
Lexus,
FE wasn't trying to be mean - it just happens naturally. He is actually an OK guy - kind of like my older brother.
As far as what can be gotten out of a 289 - on a budget - I have a bit of history with this. I built a 1965 289, +.030, 11.25:1 compression (back when gas would support that ratio), stock crank and rods with ARP hardware. I did the porting, equalized the chambers, installed roller rockers and performed a radiused valve grind using 1.87" intakes and 1.55" exhaust. I picked a cam with 312 duration and .510 lift. I used a windage tray and a Cobra high rise intake (ported and modified a bit) and ened up with 352 hp at 7200 rpm. I could have used more compression and cam but as built the engine wa practically unusable on the street even with the toploader 4 speed. I felt like I was constantly replacing plugs, adjusting valves and tuning just to make work right.
The two happiest days that I had with that engine were the first day I ran it and the day I sold it. Those days were less than a year apart.
With the heads available on the aftermarket scene today you should be able to get over 400 hp out of that engine but I still doubt it will be any fun on the street after the first week. If you are only going to race it I would stay away from the 5 speed and put a modified AOD from Broader Performance behind it. Jay can also supply you with a converter that will be ideal and a valve body to suit your use. If you have your heart set on the 5 speed then get a strong one that will take the rpm and power that you are going to have or you will be replacing it with a stronger one at a later date.
FE wasn't trying to be mean - it just happens naturally. He is actually an OK guy - kind of like my older brother.
As far as what can be gotten out of a 289 - on a budget - I have a bit of history with this. I built a 1965 289, +.030, 11.25:1 compression (back when gas would support that ratio), stock crank and rods with ARP hardware. I did the porting, equalized the chambers, installed roller rockers and performed a radiused valve grind using 1.87" intakes and 1.55" exhaust. I picked a cam with 312 duration and .510 lift. I used a windage tray and a Cobra high rise intake (ported and modified a bit) and ened up with 352 hp at 7200 rpm. I could have used more compression and cam but as built the engine wa practically unusable on the street even with the toploader 4 speed. I felt like I was constantly replacing plugs, adjusting valves and tuning just to make work right.
The two happiest days that I had with that engine were the first day I ran it and the day I sold it. Those days were less than a year apart.
With the heads available on the aftermarket scene today you should be able to get over 400 hp out of that engine but I still doubt it will be any fun on the street after the first week. If you are only going to race it I would stay away from the 5 speed and put a modified AOD from Broader Performance behind it. Jay can also supply you with a converter that will be ideal and a valve body to suit your use. If you have your heart set on the 5 speed then get a strong one that will take the rpm and power that you are going to have or you will be replacing it with a stronger one at a later date.
I can believe that... they run a circuit racing class here that must use 289 "stock" crank, block, heads and single 4 barrel. They knock out around 400hp with a flat tappet, alittle more with a roller. Streetable? I guess you could but abit of compromise, they are not really "screamers" like you would expect.I'll just post a 289 combo that yielded 375 HP on an engine dyno and 315 RWHP on a chassis dyno. Later on, the carbs, distributor and timing were tuned and the new dyno resulted in 340 RHWP (~400 HP at the flywheel)
This is a really good post! A lot of great info and FE is being entertaining as usual....who could ask for anything more?
I never would have thought a stock 289 crank, rods/arp bolts and flat top pistons could turn to 7000 rpm with no problems, can the 302 do the same? I never hear about a 302 doing that.
I never would have thought a stock 289 crank, rods/arp bolts and flat top pistons could turn to 7000 rpm with no problems, can the 302 do the same? I never hear about a 302 doing that.
Factory 289 cranks are about indestructable, rods are fine to, same goes for the 302's.This is a really good post! A lot of great info and FE is being entertaining as usual....who could ask for anything more?
I never would have thought a stock 289 crank, rods/arp bolts and flat top pistons could turn to 7000 rpm with no problems, can the 302 do the same? I never hear about a 302 doing that.
7000 rpm is nothing, if you massage the parts right 8000+ is not hard.
Yes a 302 can do that too !!!
Problems start whan guys start hitting them with Big boost and NO2. thats more than the blocks can take when start hitting them hard, but NA they work fine.
By far the biggest issue these guys have is cracked/broken cranks.... its very common. Most seem to like running a pretty heavy Carillo rod and domed piston deal which probably won't help.... but this is "road" racing, not a drag race application.Factory 289 cranks are about indestructable, rods are fine to, same goes for the 302's.
I would say y'all are all low as far as potential hp. I think 475-500 hp is possible with max ported factory heads and big valves in a max effort engine. Easy? no. Possible? yes. I'm sure it's been done before. I'm guessing 12.5-13:1 compression and 8500+ rpm.
I would think with all the 289's in vintage road course racing, a 425-450 hp "recipe" would not be too hard to find.
Just be prepared for a cubic assload of rpm. LOL!
JMO,
paulie
I would think with all the 289's in vintage road course racing, a 425-450 hp "recipe" would not be too hard to find.
Just be prepared for a cubic assload of rpm. LOL!
JMO,
paulie
Not offering this as proof. Just a FYI. These guys claim 486 hp at 7450 rpm without using aftermarket heads. I would've thought the rpm would be even higher than that.
Like I said, just FYI.
"Cobra Automotive" engine parts and horsepower page
paulie
Like I said, just FYI.
"Cobra Automotive" engine parts and horsepower page
paulie
Re-read Paul's1950 post carefully!
I;m in the same boat as he was, a rip snorting 302 based little stroker with all the right parts: forged internals, Callies steel crank, heavily re-worked Alum.heads, Shelby alum oil pan,windage tray,etc,etc makin 454hp/425lbs
Cam -223/[email protected] with .526lift
It sounds glorious, but, with a 6 speed auto behind it i can;t get out of the hole without laying 10' of rubber, won;t idle, stalls when i pull it into gear!
now, i;ve got to talk to jim at JPT or Broader to find a convertor and figure how to de-tune this puppy so i can drive it on the street!
325-350hp sounds about perfect to me
I;m in the same boat as he was, a rip snorting 302 based little stroker with all the right parts: forged internals, Callies steel crank, heavily re-worked Alum.heads, Shelby alum oil pan,windage tray,etc,etc makin 454hp/425lbs
Cam -223/[email protected] with .526lift
It sounds glorious, but, with a 6 speed auto behind it i can;t get out of the hole without laying 10' of rubber, won;t idle, stalls when i pull it into gear!
now, i;ve got to talk to jim at JPT or Broader to find a convertor and figure how to de-tune this puppy so i can drive it on the street!
325-350hp sounds about perfect to me
I don't believe the OP's origional question ever asked what was pratical or easy, he asked what's possible with a factory headed 289.....And believe me you do not need fancy steel cranks, big rods, aftermarket aluminum heads.... In fact IMO your wasting you money at the 450hp level, the exception being the heads........ The do make it much easier.
Those guys are serious. I discovered them and spoke to them a few times 8-10 years ago when I was thinking about my engine build. At that time they recommended the Comp 282S for a mechanical street cam based on years of experience. Probably the main reason I selected that cam for my 331.Not offering this as proof. Just a FYI. These guys claim 486 hp at 7450 rpm without using aftermarket heads. I would've thought the rpm would be even higher than that.
Like I said, just FYI.
"Cobra Automotive" engine parts and horsepower page
paulie
I see now that their recommended mechanical street cam is the 294S...interesting to see that they moved up to a larger cam.
Way to go FE. You probably have a shotgun and shells filled with rock salt, too. Ya big meany butt!Yep, I've driven away another promising young member...
paulie
Just saw this. Anyone ever ask Alex Dennysenko how much money he has in his ported factory 289 heads? You'll fall on the floor and crap yourself. makes my Canfields look outrageously cheap. Look at his Mustang "Money Maker" and you'll see what you can expect from an all out combo (carburetor limited by class rules) using worked over 289 heads on a 289 in a scienced out car with an exceptional driver. Should help put things in the proper perspective over just talking engine dyno numbers.
This retard will never come back thank god. let this thread rest I was correct the entire time
My response was for the guys who make it sound so easy to make a real 400 + hp with stock ported 289 heads on a 289.This retard will never come back thank god. let this thread rest I was correct the entire time
Oh crap, sorry Nate..
21 - 40 of 50 Posts
Ford Muscle Cars Tech Forum
A forum community dedicated to Ford performance owners and enthusiasts. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more!
Full Forum Listing
Explore Our Forums
Recommended Communities
