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Thread: Ford Boss 302 331 Stroked Motor
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01-09-2013 #1
Ford Boss 302 331 Stroked Motor
Ford Boss 302 331 Stroked Motor
The motor should put out between 530 HP to 560 HP based on calculations that were done yet was built to be streetable. The motor is complete and includes an aluminum flywheel for 5 speed and Ford Racing SFI Bellhousing. All you need to do is hook up the fuel line and carburetor of you choice. You will also a Ignition Box to power the new MSD distributor.
In building this motor I sourced several parts from around the county. I made attempts to use US made parts wherever possible. Even some from NASCAR shops in North Carolina like Roush Fenway.
The Bryant Crank has been gun drilled and polished and is a thing of beauty. Pistons are custom ordered through Diamond Pistons.
The heads were custom ordered through AFR then ported by Doug at Precision Oil Pumps.
Block: New BOSS 302 Ford Motorsports Block stock bore
Crank: Sonny Bryant Crank Bryant # 26475 billet Ford crankshaft. This crank has 3.255 stroke, 1.888 rod journals that are 1.825 wide, that uses .904 wide rods, it has 2.25" 302 mains. The rod journals are gun drilled, counterweights knife edged. It has been magnafluxed and passes all inspection. It is internally balanced at BW1570, and weighs 43lbs. Normally sells for $3000 new.
Rods: Maxx RPM Rods (H beam Nissan small journal)
Pistons: Diamond Pistons Custom ordered Forged Pistons and Rings
Valve Covers: Boss 302 Valve Covers
Heads: AFR 185 Cylinder Heads with LSX springs with Ti retainers and keepers. Head matched ported and polished
Lifters: Morel Hyd. Roller Lifters
Cam: Anderson Ford Racing N-111 Hyd. Roller Cam 248/258 @ .050 578 Lift
Rockers: Comp Steel Roller Rockers 1.6 Intake Manifold: Parker Funnel Web Crank Balancer: SFI Approved Racing Timing Cover: 1968 Ford Timing cover and pointer
Timing Chain: Roll master Ford 302 Torrington Needle Bearing Kit with Bronze Cam Retainer Plate.
Machine Work: Dave's Performance Machine: Hone, Deck and bearing install LJS Machine and Speed:
Intake Manifold: Parker Funnel Web which is port matched to the heads, carburetor not included
Intake gasket: Fel Pro 1262R
Oil Pan: Canton Road Race Track Pan with Pickup Oil Pump Pickup
Oil Pump: Precision Oil Pumps Blue Printed Melling's Oil Pump
Rear Main Seal: Ford Performance one piece rear main seal installed
Gaskets: Fel Pro
Pulley's: March Pulleys
Alternator; Motorcraft
Water Pump: Edelbrock 8843 - Edelbrock Victor Series Mechanical Water Pumps driver side hose outlet
ARP Bolt: All ARP Stainless used throughout motor
Distributor: MSD # 8285 Racing Distributor, Billet, Magnetic Trigger, Mechanical Advance, Ford, 289-302,
Distributor Gear: 85833 - MSD Steel, Roll Pin Included, .468 in. Ford
Fly wheel: Aluminum balanced with rotating assembly
Morgan Phone-day: 559-706-4669 Phone-evening: 559-706-4669
List Date: 1/9/2013
For more info, check out this listing in the Pro-Touring.com marketplace: Ford Boss 302 331 Stroked Motor
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On Sale For: $10000 + $400 Shipping

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07-09-2016 #2
Registered User
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- Jul 2016
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I'm very late to this, as I would likely have just bought your motor. I'm on the same path now and building the same engine with one of the 3.255 Bryant NASCAR cranks, and I really need to learn about those custom pistons. Was this a piston guided rod setup? I'm not sure how the Nissan rods work out exactly on the Bryant crank. There is one other option, running Nissan rods bushingless reamed for a .927 piston pin with off the shelf 4.125 Mahle pistons, for a big bore short stroke 348. Trouble is the rod guiding not sure how that's going to work.
Any specs or advice on those custom pistons is GREATLY appreciated!
07-09-2016 #3



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