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Old 07-17-2013, 02:27 PM
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351 Cleveland street build

Im getting a 71 mustang with a 351 Cleveland 4 barrel motor and either a fmx or a c6 I want it to be a street motor and make 350-400 horses. Id like for It to pull up to 7000 rpms .


Ideas on whats needed Id like to do this on much a budget as possible and no holleys

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Old 07-17-2013, 05:12 PM
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Forged internals for starts.
Static CR will need to be around 10.0 to 1
Cam should be 230/230 at .050... 112 lsa .520 /.520 lift or so
Definitley need to get good valve springs to ensure valve close tightly at those high rpms.
Heads will need ported a bunch and need to be done correctly.Or get a good set of aluminums.
You will need a stall converter with a stall speed of 2500 .
A dual plane intake, and a quick fuel 750 ss.
Stick with a good ignition, like a MSD. Although a duraspark 2 can be recurved to work well
A 3.55 gear would be Ideal.
Youre looking at 6K easy.
This combo should get you close to 375 hp
Not sure about 7000 rpm, but 6250 or better for sure
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Old 07-18-2013, 06:44 AM
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Solid lifters are called for if revving to 7K. The Cleveland can certainly do it.

I'm not a big "fan" of 4-bbl. heads on a street engine. Gearing must be pretty "stiff". The best C heads we've ever done were "quench" 4-bbl. units with 1/2" of epoxy in the intake floors, and the "Gapp & Roush" exhaust "plate". LOTS of work. 2-bbl. heads can be used more efficiently for streeters.

4-bbl. engines came with C-6, if auito trans. 2-bbl. engines got FMX.

FWIW

Jim
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Old 07-18-2013, 08:45 AM
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Well he said It was a 4 barrel so I assuming one It a Cleveland. And 2 It not a 2 barrel motor swapped with a 4 barrel swapped in.

What would It take to make It aggressive street motor and at least out run a Bolt on Fox? Ppl say the Cleveland the best small block Ford so I expect It to run.
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Old 07-18-2013, 07:48 PM
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I would pick a cam with 240 duration and a solid or solid roller.you could use after market heads that flow about 280 CFM or more.I wont recommend gears because I dont know the application of the car.
1 3/4 inch primary headers for high RPM. 750 CFM carb is good
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Old 07-18-2013, 07:55 PM
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Street car with some highway cruising. Ill show It and do that kinda stuff but It isnt a trailer queen.
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Old 07-18-2013, 09:42 PM
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I like my street car to be more like a road race car,IE,handle well and fun to corner,also have good accelleration.
What do you call a street car? more acceleration and not so much handling?
What do you want you car to do well?
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Old 07-18-2013, 10:01 PM
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Ill be honest Id like to lighten the car up some and make It more 50/50 balanced and upgrade the handling as best as possible but It never gonna be a pro touring car.
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Old 07-18-2013, 10:10 PM
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Why do you not want a Holley? Just curious?
Even Ford ran Holley's on their fastest street and factory track & drag machines! What induction system or carb are you thinking about? Whats your (Quote: "on much a budget as possible") limit?
Jester
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Old 07-18-2013, 10:21 PM
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Terrible mileage lol. And Idk depends Id love to make It handle and have some pep to It
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Old 07-18-2013, 10:34 PM
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If you want fuel economy and 7,000 RPM,you will need fuel injection and a roller cam.These engines are not cheap to build
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Old 07-19-2013, 11:37 AM
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Vinnie, Latech, and most others on here will all agree 7000 RPM, 351 C., 400HP, and fuel economy will be very expensive! You would be better to build a bottom end engine that builds its power from Idle to about 5,500 rpm for the street. You can save money on gearing, no high stall convertor, and impress people with a car that performs impressively off the line and handles well at speed! and can still run an impressive quarter mile time, and melt the tires coming off the lights! And you won't need the forged parts or as much balancing or valve train work! I build High RPM engines and they are seldom in the 5 to 7,000 RPM range on the street unless I'm breaking a lot of "LAWS" LOL But at the track I leave the line at around 4000 RPM and shift at 8000 RPM! You can't use that on the street without scaring the hair off the blue haired old ladies and having kids wet themselves! Or have a spotter looking for the cops!

Ive raced top notch bottom end cars (LOW RPM) that ran 10s, and top notch top end cars (HIGH RPM) that ran 10s, and the high RPM cars always play catch up because their power doesn't come into bearing till they get into the higher RPM power ranges! But they both can cross the quarter mile Finnish line at the same time!

Just a thought you may want to consider when on a budget

Jester

Street racing is a no ,no But when people break the law the lower RPM car will Win 9 out of 10 times on the street from light to light!!! But we know no one does that on this forume!!!

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Old 07-19-2013, 02:02 PM
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Kinda got screwed It a 302 with a 4 barrel intake and all that. Kinda disappointed but hey not bad I guess
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Old 07-19-2013, 02:33 PM
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I would suggest you read up on ford engines over at wiki and crankshaft coalition, so you can ID a ford engine. There are some pretty stark differences between a SBC and a 335 series ford. Unless youplan on settling for the SBF you have now.
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Old 07-19-2013, 02:43 PM
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I asked What It was he said 351 so I just guessed Cleveland. Well his dad showed up and said It was a 302 so I guess parts are cheaper and such and I can always throw in a 351w .
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