289 engine horse power estimate

[jtgb428]

jim here. 1st things 1st, this is not a hipo engine. can you guys give me a rough estimate on the hp of my 289 engine. it has a edelbrock rpm intake, 750 holley, comp cam extreme energy cam, msd distributor, 1969 351 c9 windsor heads that are ported and polished, 194 intake valves, milled down to a 56cc combustion chambers, tci c4 with a 2200-2500 stall converter. thanks, jim.

 

[jlangholzj]

no need to post in both talk and tech.

but it sounds like you've got a healthy little guy there!

 

[woodsnake]

Do you have access to a dyno?

I'll go 275 at the fly wheel...

 

[zookeeper]

That'd be my guess as well, maybe a touch more if it's got a good tune on it.

 

[D.Hearne]

It's in the 300's in flywheel HP. The Holley 750 is hurting you if it's a mech secondary carb on the street.

 

[Edster]

There are shareware programs that can be found on the internet that can estimate your HP. You will need the specs from your cam-card, these can be found online at the manufacturers site. Also all other specs will need to be entered. The programs usually get you close to what real power is. I have a 302 w/ a similar setup and the desktop dyno and it had put the power in the 300s but this was about ten years ago and the engine was built in the early 90s and was pretty hot then.

 

[rbohm]

depending on which extreme energy cam you have, i would say between 260 and 290hp. the heads are what is holding the engine back. pop for a set of windsor jr or similar sized heads and you can add another 40hp.

 

[Stang_1973]

+1 on theose heads. Ive heard some good stuff about them and they dont seem to be too expensive. Im planning on going with them after i get my brakes and rear gears. so who know when thas gonna happen, haha!