289 horsepower capability

FEandGoingBroke said:

You just wait till he builds it and you'll see that I'm closer!

I've never build a performance engine in my life. Simple stock builds and assemblies are my thing... Less to think about

But his 289, at 289 Cubes will bring him only 340 to 360 HP in the end... you just watch

Oh by the way, that's a SCHITT TON of HP out of less than 300 Cubic Inches! And you guy's think I'm crazy trying to get 250 HP out of my 200 Cubic Inch inline 6 engine! sheesh... I don't see how he can generate 100+ hp over his cubes and you all think I can't generate 1 HP per cube in my SIX...

Click to expand...

Now days its not a Shizzzz ton of HP out of a 289" motor, you should see what the Comp Eliminator full on race engines make..........

10.5-11:1 Compression Intake Flow in the 225-230cfm range, 750 HP, Victor Intake, Roller Cam in the 250 @ .050 on the intake and 260 on the exhaust with about .650 lift on a 106 or 108 and some well built headers........ and don't be afraid to spin it !!!

293" @ 375hp = only 1.28 hp per CID

293" @ 400hp = 1.37 hp per CID

both easily and well proven if the right parts and work is done.

Problem with the 200 6 cylinder is the avalibility of parts and the head SUCKS, it makes a stock SBF head look race quality !!!

Now you do have a good point, if the guy doesn't know much about engines and where to get good parts and work done it may not break 250hp !! But he asked about the potential...........

lexus said:

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.

Click to expand...

I remember back in the 80's before the aftermarket heads hit the scene, it was common around here for Ford guys to have the Chevy 1.94/1.60 valves installed in their SBF heads and "hog" them out to improve flow. They typically liked to use the "hipo" heads for the small combustion chamber in order to make compression too.
I never saw any of those engines built for street-use making more than about 325HP on the dyno. The Chevy guys that could rummage up a set of factory 2.02 valve, angle-plug small block heads were making 375 + on the street all day long with 350's and more with 400 small blocks. But when aftermarket heads and then stroker kits came along, everything changed.

Granted, we also didn't have modern cam profiles, intakes, etc. back then either. Given that, I still think you're looking at about 350HP max with a stock-stroke 289 and those heads in any kind of streetable combination (without putting more than the price of a set of aftermarket heads into those heads).
Of course as others have stated, with a good set of aftermarket heads (and better yet a stroker kit), 400HP and up becomes very realistic.

What a damn PANZY! HAHAHAH

I tease you because of your Toyota name and you whine.

Come on man, your skin is waaay to thin!

To me and EVERYONE I know I'm 100% positive that the FIRST thing a person thinks of when they hear the word LEXUS is TOYOTA....

Same as Mercedes, NOBODY in their right mind thinks of an Adorable 4 year old girl in pig tails smiling brightly when they hear the name LEXUS or any other car name for cryin' out loud.

If you cant figure I was having fun with you then maybe you should rethink your reply.

I said 340 to 360, and when you are done building the 289 and I am sure that my opinion will have been SPOT ON.

Your question was answered. Some HIGH numbers and some Good numbers, but NONE of the numbers were insulting!

Now that I've defended my maidenhood and honor, let's have everyone raise their hand if they think of a little girl when they see the word Lexus....


I hope your build comes along wonderfully and you make a gazillion HP with it.

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)

'66 289 block .030 over
stock crank and rods with ARP hardware
Forged pistons 10:1 compression
'66 heads professionally ported by Superior Automotive, Anaheim, Ca
1.90/1.60 valves
Comp 294S Solid Lifter cam
Dual Quad Holley manifold with dual 540s
1.6 roller rockers
Dougs Tri-y headers
Borla Exhaust

Very streetable combo with a toploader 4 speed and aftermarket 8" posi and axles behind it.