Tried to post questions...

[Mark IV]

Originally Posted by jordanm

And they never show up! Anyways, it looks like this post is actually showing.


So I am looking at a potential 289 slab side build, Superformance. I was able to actually go down to Irvine and sit in a couple models, and with some slight changes I think my 6-4 frame can fit.

In speaking to a respected local shop there, the owner recommended this engine instead of the standard X302B:

https://performanceparts.ford.com/part/M-6007-D347SR


This is going to be an EFI car, and drivability around town is key (plus ease of use). Anyone have any experience with this motor?


thanks in advance.

That is a sealed, race spec engine and not really optimum for the street if you are looking for a tractable, torquey street engine.

You may want to look at other options. Anything much over 350 HP in the Roadster will be hard to use, you will not have exponential acceleration increases due to tires (unless you run race tires).

My own 289 is going together now and is about 340 HP on an custom spec'ed engine from ATK. With the 3.54 Salisbury in my car, the .82 fifth gear I will have a quick (not 427 rocket ship status, but fast enough) MK II that will cruise well, move off the line and run cool.

If you are looking at a recently built 289 Superformance chassis your 6'4" will be no problem as the footboxes have been lengthened and room increased. I require revised pedal to master clevis' to allow me to fully depress the clutch pedal without needing to move the seat way forward. We can now accommodate most anyone in a 289.

[1795]

Originally Posted by Mark IV

That is a sealed, race spec engine and not really optimum for the street if you are looking for a tractable, torquey street engine.

You may want to look at other options. Anything much over 350 HP in the Roadster will be hard to use, you will not have exponential acceleration increases due to tires (unless you run race tires).

My own 289 is going together now and is about 340 HP on an custom spec'ed engine from ATK. With the 3.54 Salisbury in my car, the .82 fifth gear I will have a quick (not 427 rocket ship status, but fast enough) MK II that will cruise well, move off the line and run cool.

Rick,

Looks nice, is that going to be your personal car or one you are getting ready for sale?

[Mark IV]

Originally Posted by 1795

Rick,

Looks nice, is that going to be your personal car or one you are getting ready for sale?

Mine to drive/demo car.

[cycleguy55]

Originally Posted by Mark IV

That is a sealed, race spec engine and not really optimum for the street if you are looking for a tractable, torquey street engine.

Maybe I'm missing something, but with 10:1 compression ratio (presumably static CR) and 226° duration @ 0.050" lift, that doesn't seem too radical for the street.

Ford Performance Parts describes the cam this way: "This cam provides a noticeable power improvement and lumpy idle while maintaining good driveability with a manual transmission. Works well with carburetors or mass air fuel injection." https://performanceparts.ford.com/part/M-6250-F303