Fox 351ci to 393ci stroker

[92 "Kane"]

Wouldn't a refreshed 351w with good flowing 11r heads, blower friendly cam, quality intake with a centri blower pushing about 14psi get this guy in the 500+ rwhp range? A boosted 393 combo seems like overkill for a "family friendly" street car. You'll build it up just to tame it down. Only upside I see about the boosted 393" engine is if you ever remove the supercharger you'd be left with a sweet and powerful NA engine.

Im deciding to stick with a N/A 393ci.

 

[FoxMustangLvr]

Im deciding to stick with a N/A 393ci.

I think that's a great decision for a street car!

 

[a91what]

lol i saw you say you were going to run a holley system, i was going to suggest the lesser of the two systems since your not running boost. Then i saw that you are going to do a carb swap, this makes me sad....

 

[FoxMustangLvr]

lol i saw you say you were going to run a holley system, i was going to suggest the lesser of the two systems since your not running boost. Then i saw that you are going to do a carb swap, this makes me sad....

-hugs-

 

[92 "Kane"]

-hugs-

Lol and originally I wasn’t going carb. But I like learning and doing new things so I figured ill do Carb and if im not comfortable or whatever the case may be. Ill will change things up.

 

[FoxMustangLvr]

Lol and originally I wasn’t going carb. But I like learning and doing new things so I figured ill do Carb and if im not comfortable or whatever the case may be. Ill will change things up.

Some do it with a screw driver, some do it with a lap top

 

[a91what]

laptop- thats how i roll...

 

[90sickfox]

Me too....laptop all the way !!!

 

[90sickfox]

I ran a carburetor for years. It performed well but the driveability is so much nicer with efi. Everytime the temperature changes the carb will hasve to be adjusted. To convert to carb correctly will cost but not as much as converting to factory style efi.

Before i spent 600 on a carburetor I'd spend 1k on a stand alone efi system. This one supports up to 650hp.

 

[92 "Kane"]

I ran a carburetor for years. It performed well but the driveability is so much nicer with efi. Everytime the temperature changes the carb will hasve to be adjusted. To convert to carb correctly will cost but not as much as converting to factory style efi.

Before i spent 600 on a carburetor I'd spend 1k on a stand alone efi system. This one supports up to 650hp.

Good info. Ill look into those Holley Efi’s. I know they’re popular so they’ve got to be a good choice.

 

[a91what]

Warning I have read many people having drivability issues with the sniper kits and large cams.
Hmm I think one of our members here may use this kit...

 

[Steel1]

Warning I have read many people having drivability issues with the sniper kits and large cams.
Hmm I think one of our members here may use this kit...

Yeah, I did some research on the the carb style efi kits and it seems to be a vacuum issue with large cams.
I read on the Fast forum if your not pulling greater than 10hg. at idle it can cause issues, also read something about their compatibility
with a stick..So before you go that route I would do some digging.

 

[92 "Kane"]

Warning I have read many people having drivability issues with the sniper kits and large cams.
Hmm I think one of our members here may use this kit...

So how have they gone about fixing the issues?

 

[a91what]

Run a street friendly cam comp, bullet, EDC, freezy, ect can grind you a cam for the cost of a good shelf cam. It's a no brainer just make sure they know what you need, no reason in this day and age to give up streetability. Will you lose some peak power, sure but you will enjoy the car more.

 

[92 "Kane"]

Run a street friendly cam comp, bullet, EDC, freezy, ect can grind you a cam for the cost of a good shelf cam. It's a no brainer just make sure they know what you need, no reason in this day and age to give up streetability. Will you lose some peak power, sure but you will enjoy the car more.

Ok makes sense, thanks.

 

[EDC]

OK - gotta ask -

Why 393 when the 408 kits are reasonable?

 

[92 "Kane"]

OK - gotta ask -

Why 393 when the 408 kits are reasonable?

Honestly, no real reason. I just know it’s fairly easy to stroke 351 to 393. I havnt looked into the 408ci. Are you running a 408? Curious to know about it.

 

[EDC]

Honestly, no real reason. I just know it’s fairly easy to stroke 351 to 393. I havnt looked into the 408ci. Are you running a 408? Curious to know about it.

Why give up the extra cubes?

The block machining is the same for both.

The 408 has a lighter piston and better connecting rod.

Seems like a better build.

 

[92 "Kane"]

Why give up the extra cubes?

The block machining is the same for both.

The 408 has a lighter piston and better connecting rod.

Seems like a better build.

Why give up the extra cubes?

The block machining is the same for both.

The 408 has a lighter piston and better connecting rod.

Seems like a better build.

Ok ima look into it thanks for the advice

 

[General karthief]

Hey ed, get back to work!