Most Streetable HP from a 289?

[Dinobyte]

Originally Posted by maverick

If weight is the major consideration:

Keith Craft aluminum 427/482 stroker.............640+hp and 470#s, 10.5:1 comp ratio, hydrau. roller cam............. pretty fair pwr/weight ratio.

Negative...too much and not vintage, but thanks.

Has anyone here smoged a new block motor and passed? Say in the 392-408 range. If you have passed, what did you have to do to the motor to pass...in other words, did you have to put the Autolite 4100 carb on, or heat riser from the exhaust...etc.

What about the big block crowd...390 and 428...did you pass SMOG?

I am learning a ton from everyone's response...thank you.

Dino

[Rick Parker]

There are certainly many opinions on what is the correct engine for Cobra. Seek out someone with a "real" 289 smallblock and form your own opinion...



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[Tongue Pirate]

As always, looks great rick! Were did ya pick up the Valve cover decals?

[Dinobyte]

Originally Posted by Rick Parker

There are certainly many opinions on what is the correct engine for Cobra. Seek out someone with a "real" 289 smallblock and form your own opinion...

Exactly!! Did you see my questions above? I think that is what I am trying to do...nice engine by the way. What are the specs?

Please tell me about how you registered it, what challenges you had, and what you would recommend.

[Allan A]

Hyde,

http://www.cobracountry.com/kress/home.html

A 289 is not a bad thing but it would not have enough for me. Would anyone know what or who makes the best brake pads for Girling style brakes.

Allan

[DavidNJ]

Let me throw out some 289 issues.

First, Eagle and Scat don't make 289 cranks. So to get a new bottom end it will either be custom or old Ford. Or 302/331/347.

Second, most new heads are aluminum. The original were cast iron. Low volume quality iron castings are getting harder to find. Dove is only offering aluminum now on their FE stuff (they have the original Ford molds). If you want to go aluminum, you have a wide selection. if you want to go cast iron, you don't. 1960's vintage heads are an old design with much less efficient combustion. World Windor Jr./Sr. heads are a modern design and fairly low cost. For N352 heads are a modern 10° design with peanut chambers. However they have limited intake availability and use N1 exhaust ports, which would require custom headers.

You have a lot of cam choices. However, if you want a modern technology hydraulic roller that revs to 6500-7000 you will have to watch valvetrain mass. Probably Comp Beehive springs with Ti retainers, a low inertia roller rocker, and maybe 5/16 stem valves (LS1s have 8mm, which is equivalent).

There are lots of shops that can build a 289. If there is a good local oval track shop that does winning Ford, it would probably do a good job. So would Keith Craft, probably the Cobra shop listed early in this thread, Gordon Levy, and FPS.

None of the newer 302 blocks are really any stronger. For more power you are in an aftermarket block--Ford Racing, World, Dart--with what ever emissions issues that entails.

[bret a ewing]

Originally Posted by Dinobyte

Negative...too much and not vintage, but thanks.
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Dino

Paint a Pond and you can't tell the difference, but it is salty.......