Has anyone supercharged a carburated 306 crate motor. Do you need to change carbs or rejet .? Would the timing stay the same ? Will the motor hold up with about 6psi ?
They are some supercharger specific carbs out there. It would be in your best interest to change the carb.
__________________ gordon@levyracing.com Pro Builder and Go Fast Specialist
99/2000 NASA PSO Champion in a FFR
2005 FFR Challenge West coast Champions 2nd 2005 Nationals Sponsor for Tony B. ST-2 National Champion 2007
2009 TTC runner up-2010 TTB Runner up
Over 155 Turnkey FFR's in 16 years and still counting
with a max boost of 5-6 psi even factory 302's don't come apart. your 2 week points are the head gaskets and the block . I would be very surprised if you had any issues with either at a low boost level as long as the fuel and timing are right . Be sure it has at a minimum forged pistons and good rod/head bolts. You didn't mention who's crate motor Bob
__________________
FFR5020 MK III Whitby body +paint, sai mod, Tremec,408, Cobra/Oben brakes , Halibrands, mass flo , gas n pipes, levy rad team3 spinners.Fortes driveshaft, pulleys ,and quick release steering
I have run stock block 5.0 up to 13 PSI no prob with proper tuning and fuel. The boost is not the issue it's the max power that kills the blocks. They tend to split down the lifter valley (ask me how i know ) and the block is definitely the weak point. You should be able to make under 500 RWHP without an issue. As far as the carb, you will need a blow thru carb. If you already have a manual secondary carb, you can send it to be modified to CSU carbs in California (ask for kevin) If not then you need to sell the carb and buy one from him. You could also just buy a carb that is setup for blow thru like from Demon Carbs but the service you will get from CSU is worth the extra $$$ in my humble opinion. Expect to pay about $ 850.00 for a blow thru carb from CSU or $ 450.00 to have yours modded, last i checked.
Good Luck and Cheers
__________________
Garage is empty, but not for long............
"There's nothing like a Cobra. It's stripped down to the essentials
- a big engine, a small car, and four wide tires trying to keep the whole
business on the pavement. It's loud, smells like gasoline, shakes, shudders
and bucks. It makes your arms tired and your feet hot. You nearly crash every ten minutes. It's so damn wonderful that you can't believe it."
Wife quote number 469: "Really, Really, another one of those F#$&ing cars" ?
Seems like it would be a nice motor for a blower. 9:1 compression (not too high) and aluminum heads. With only 6psi and proper tuning, you'd have a fun reliable motor.
I had an EFI 306 similar to what you have there and twin turbos at 8 psi. Made 420 RWHP and 440 RWTQ without problems.
Cheers
Sent from my Autoguide iPhone app
__________________
FFR4398. Powder coated chassis, pin drive IRS, custom side pipes, custom 289 FIA features, all aluminum 4.6L DOHC with Twin Turbos, Tremec TKOII, and lots of other goodies.
Can I use my stock injectors/maf/computer with this engine?
Would I have to change out somethings to get a reasonably powered daily driver?(I too was thinking of a low-boost s/charger)
MAF and computer yes (depending on which one, an A9L yes) injectors no. You need to run 42 # injectors.
__________________
Garage is empty, but not for long............
"There's nothing like a Cobra. It's stripped down to the essentials
- a big engine, a small car, and four wide tires trying to keep the whole
business on the pavement. It's loud, smells like gasoline, shakes, shudders
and bucks. It makes your arms tired and your feet hot. You nearly crash every ten minutes. It's so damn wonderful that you can't believe it."
Wife quote number 469: "Really, Really, another one of those F#$&ing cars" ?
Welcome to FFCars! The
representations expressed are the representations and opinions of
the FFCars.com forum members and do not necessarily reflect the
opinions and viewpoints of the site owners, moderators, Factory Five
Racing, Inc. or Ford Motor Company. This website
has been planned and developed by FFCars.com and its forum members
and should not be construed as being endorsed by Factory Five
Racing, Inc. or Ford Motor Company for any
purpose. "FFR", "Factory Five", "Factory Five Racing", and the
Factory Five Racing logo are registered trademarks of Factory Five
Racing, Inc. FFCars.com forum members agree not to
post any copyrighted material unless the copyrighted material is
owned by you. Although we do not and cannot review the messages
posted and are not responsible for the content of any of these
messages, we reserve the right to delete any message for any reason
whatsoever. You remain solely responsible for the content of your
messages, and you agree to indemnify and hold us harmless with
respect to any claim based upon transmission of your message(s).
Thank you for visiting the FFCars.com Forum dedicated to Factory
Five.
Linear Mode
