Tony Gentile's 1974.5 MGB V8 Conversion (347ci Ford Stroker)
BritishV8: the site for enthusiasts of modified British sports carsas published in BritishV8 Magazine, Volume XXIII Issue 1, December 2017
Read the full write-up at BritishV8: the site for enthusiasts of modified British sports cars ↗
Photo: BritishV8: the site for enthusiasts of modified British sports carsA 1974.5 MGB rebuilt around a 347ci stroked Ford V8
Tony Gentile's MGB received a Ford 302 stroked to 347ci, built by Todd's Automotive Machine Shop with a Bessel-prepped race block, paired to a Tremec 5-speed and a narrowed Ford 8.8 rear axle. The car was reworked extensively with custom suspension, brakes, bodywork and interior detailing, and the conversion was carried out by Greg Beishir. On the dyno it produced 375 rear wheel horsepower and ran a 9.8 second quarter mile at 146 mph.
Specs
As stated in the original write-up.
- Engine
- Ford 302 stroked to 347cid, 11:1 compression, AFR 205 aluminum heads, Erson hydraulic roller cam (234/242 at .050, .584 lift)
- Fuel & Ignition
- FAST XFI 2.0 EFI, FAST four-barrel throttle body and fuel rails, Precision Flow 39# injectors, MSD billet distributor and Digital 6A ignition
- Cooling
- Griffin aluminum radiator (Mustang size, PN 7-565BC-FXX) with electric fan
- Exhaust
- Fast Cars Inc. RV8-style four-into-one headers, Doug's Headers Corvette side pipes
- Gearbox
- Tremec 600 5-speed manual, McLeod clutch and pressure plate, Fidanza aluminum flywheel
- Rear axle
- Narrowed Ford 8.8 axle, 3.73:1 gears, Traction-lok differential, Speed and Specialties finned cover
- Front suspension
- Fast Cars coilover front suspension with Art Morrison sway bar spacers
- Rear suspension
- Custom four-link with dual Panhard bars, Strange Engineering adjustable coilovers (#81587), QA1 springs
- Brakes
- Wilwood master cylinder and adjustable proportioning valve, Wilwood front calipers and rotors, Ford rear disc brakes
- Wheels
- Ford Mustang GT V6 aluminum wheels, 16x7, 5x4.5 pattern
- Tyres
- BF Goodrich G-Force Sport Comp-2, 215/55ZR16
- Fuel tank
- Tanks Inc. 15 gallon tank built for fuel injection
- Body
- Bumpers deleted, custom crate style grille, Mk3 vented front apron, VW Rabbit fender flares front and rear, louvered front fenders, two-level hood scoop, Preform Resources rear valance, MGB Mk1 taillamps
- Paint
- Custom two-tone, GM white #8554 and Ford red #6726
- Interior
- Stripped and painted Abingdon pillow-style dashboard, custom glovebox and center console, GM-style tilting steering column, MGB seats reupholstered by Classic Car Studio, electric seat and back heaters
- Instruments
- Autometer volt, tach, speedo, coolant temp and fuel gauges; Smiths oil pressure gauge; AutoMeter oil temp gauge; VDO clock
- Electrical
- Delco-Remy alternator, Pollak battery disconnect switch, vehicle speed sensor on rear axle
- Performance
- 375 rwhp and 341 ft-lbs at 6600 rpm; quarter mile 9.8 seconds at 146 mph on dynamometer
Parts used
Parts named as used in the original write-up, grouped the way the Parts page groups them. Where one of the shops we index lists the same thing for this car, it is shown underneath with a link to the shop.
Engine 13
- Ford 302 block stroked to 347ciBessel Motor Sports
Race-prepped block with splayed 4-bolt mains and 1/4 inch lifter valley gusset plate, assembled by Todd's Automotive Machine Shop
- Forged crankshaftBessel
No-twist forged unit, custom ground for the stroker build
In the shops
Forged Crankshaft - MGB 5-Bearing ↗Betaset (France)· €4,528.80 EUR
Screw/Washer for Forged Crankshaft - MGB ↗Betaset (France)· €107.10 EUR
- H-beam connecting rodsManley
Used in the rotating assembly
In the shops
MANLEY H BEAM RODS ↗
MiataSpeed· $457.20 USD
Connecting Rod ↗
Moss Motors – Triumph TR6/TR250· $6.99 USD
Connecting Rod Bolt ↗
Moss Motors – Triumph TR6/TR250· $21.99 USD - Diamond domed pistonsSpeed Pro
Digital design pistons with valve reliefs giving 11:1 compression
- AFR 205 aluminum cylinder headsAFR
Fitted with minor flow work
In the shops
Aluminum Cylinder Head, Complete ↗
Moss Motors – Triumph TR6/TR250· $1,316.25 USD
Alloy Cylinder Head, Bare ↗
Moss Motors – Triumph TR6/TR250· $1,316.25 USD
Cylinder Head Stud, 7-13/16" ↗
Moss Motors – Triumph TR6/TR250· $19.99 USD - Roller rockersCrower
1.65:1 ratio rockers fitted to the valvetrain
In the shops
Roller Rocker Assembly (6-Cylinder) ↗
Good Parts· $999.00 USD
Roller Rocker Assembly (Spitfire/Midget) ↗
Good Parts· $799.00 USD - Conical valve springs
Dual valve springs fitted to the heads
In the shops
Door Handle / Window Winder Conical Spring ↗James Paddock Ltd· £2.75 GBP
- Hydraulic roller liftersErson
RL962 lifters used with the roller camshaft
In the shops
Tiger V8 Hydraulic Lifters ↗
Sunbeam Car Parts (Alpine, Rapier, Tiger)· £114.00Hydraulic Valve Lifter (84-89 300ZX Z31) ↗Motorsport Auto (The Z Store)· $29.87 USD
- Hydraulic roller camshaftErson
234/242 duration at .050, .584 inch lift
- Valve coversFord Racing
Fitted to the Ford stroker engine
- Super Victor intake manifoldEdelbrock
Intake fitted for the stroker build
In the shops
Intake Manifold ↗
Moss Motors – Triumph TR6/TR250· $305.25 USD
Intake Manifold Adaptor ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Intake Manifold to Head Gasket ↗
Moss Motors – Triumph TR6/TR250· $6.40 USD - Four-into-one headers and collectorsFast Cars Inc.
RV8-style headers routed through the fenderwell
- Side pipesDoug's Headers
Corvette-pattern side pipes fitted to the exhaust
Fuel & Ignition 11
- XFI 2.0 electronic fuel injection control moduleFAST
Engine management for the EFI system
In the shops
Electronic Control Module (C2Z1768) ↗Norman Motors Ltd· £0.00 GBP
Electronic Control Module (C2D24776) ↗Norman Motors Ltd· £0.00 GBP
Electronic Control Module (C2D19843) ↗Norman Motors Ltd· £0.00 GBP
- Billet distributorMSD
Ignition distributor fitted to the engine
- Digital 6A capacitive discharge ignitionMSD
CD ignition box used for the engine
- HVC Blaster II ignition coilMSD
Coil fitted with the MSD ignition system
In the shops
Ignition Coil & Wires ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Pertronix Ignition Coil ↗
Moss Motors – Triumph TR6/TR250· $68.50 USD
Ignition Coil Mounting Bracket ↗
Moss Motors – Triumph TR6/TR250· $50.99 USD - Spiro Pro 8mm spark plug wiresTaylor
Plug wires fitted to the engine
In the shops
Magnecor 8.5mm Spark Plug Wires ↗
Moss Motors – Triumph TR6/TR250· $135.25 USD
NGK Spark Plug ↗
Moss Motors – Triumph TR6/TR250· $3.89 USD
NGK Spark Plug ↗Betaset (France)· €5.52 EUR
- RPM Module Selector (8670)MSD
Used with the ignition control system
In the shops
Automatic Gear Selector Module Linear Switch ↗
British Auto USA· $531.63 USD - RPM Activated Switch (8950)MSD
Used with the ignition control system
- Four-barrel throttle bodyFAST
Fitted as part of the EFI induction
In the shops
Jenvey DCOE Throttle Body Air Horn ↗
Racetorations· £30.00 GBP
Jenvey DCOE Body Throttle Linkage Kit ↗
Racetorations· £134.00 GBP
Jenvey Heritage Throttle Body Air Horn ↗
Racetorations· £42.00 GBP - Fuel rails (model 30351)FAST
Fitted for the fuel injection system
- 39# fuel injectorsPrecision Flow
Fitted to the EFI system
- 15 gallon fuel tankTanks Inc.
Built specifically for fuel injection use
In the shops
16 Gallon Touring Fuel Tank ↗
Moss Motors – Triumph TR6/TR250· $188.25 USD
16 Gallon Touring Fuel Tank (1970-76) ↗
Moss Motors – Triumph TR6/TR250· $252.50 USD
16 Gallon Touring Fuel Tank (1977-80) ↗
Moss Motors – Triumph TR6/TR250· $256.50 USD
Cooling 1
- Aluminum radiatorGriffin
Mustang-size radiator, part number 7-565BC-FXX, fitted with an electric fan
In the shops
Aluminum Radiator ↗
Moss Motors – Triumph TR6/TR250· $355.00 USD
Aluminum Radiator ↗
Moss Motors – Triumph TR6/TR250· $358.50 USD
Aluminum Radiator ↗
Moss Motors – Triumph TR6/TR250· $364.00 USD
Gearbox & Drivetrain 5
- Tremec 600 5-speed manual transmission
Transmission fitted behind the stroker V8
In the shops
Dash Harness (Manual Transmission) ↗
Moss Motors – Triumph TR6/TR250· $255.63 USD
Main Engine/Dash Harness, Manual Transmission ↗
Moss Motors – Triumph TR6/TR250· $704.83 USD
Driveshaft Components (Mk II with Manual Transmission) ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD - Aluminum flywheelFidanza
Fitted with the clutch assembly
In the shops
Lightweight Aluminum Flywheel by Fidanza ↗
Moss Motors – Triumph TR6/TR250· $510.25 USD
Lightweight Aluminum Flywheel by Fidanza ↗
Moss Motors – Triumph TR6/TR250· $394.25 USD
Lightweight Aluminum Flywheel by Fidanza ↗
Moss Motors – Triumph TR6/TR250· $394.25 USD - Single disc clutch and pressure plateMcLeod
Clutch assembly fitted to the driveline
In the shops
AP Clutch Pressure Plate ↗
Moss Motors – Triumph TR6/TR250· $143.50 USD
Clutch Disc - MGB ↗
bpnorthwest.com· $59.95 USD
Clutch Disc (Girling) ↗
Moss Motors – Triumph TR6/TR250· $64.99 USD - Narrowed Ford 8.8 rear axle
Fitted with 3.73 gears and Traction-lok differential
- Finned aluminum differential coverSpeed and Specialties
Fitted to the rear axle
In the shops
Cover, differential, alloy finned with fitting kit ↗Moss Europe (UK)· £190.80 GBP
Suspension & Steering 4
- Coilover front suspensionFast Cars
Front suspension system fitted to the car
- Custom four link rear suspension with dual Panhard bars
Locates the narrowed axle, built with two Panhard rods
In the shops
Five Link Rear Suspension Kit ↗
Moss Motors – Triumph TR6/TR250· $3,154.95 USD
Panhard Bar Kit ↗
Moss Motors – Triumph TR6/TR250· $323.99 USD
Left Sway Bar Link ↗
Moss Motors – Triumph TR6/TR250· $23.99 USD - Adjustable coilover shock absorbers (#81587)Strange Engineering
Fitted at the rear with QA1 springs
In the shops
New Shock Absorber ↗
Moss Motors – Triumph TR6/TR250· $474.25 USD
Shock Absorber Link ↗
Moss Motors – Triumph TR6/TR250· $21.99 USD
Shock Absorber Bolt ↗
Moss Motors – Triumph TR6/TR250· $1.95 USD - Coil springsQA1
Fitted with the Strange rear coilovers
In the shops
Double Coil Spring Washer ↗
Moss Motors – Triumph TR6/TR250· $0.55 USD
Front Coil Spring (MGB 1963-1972) ↗
bpnorthwest.com· $59.40 USD
Sun Visor Mounting Coil Spring (MGB) ↗
bpnorthwest.com· $0.59 USD
Brakes 4
- Brake and clutch master cylindersWilwood
Fitted, requiring one remote reservoir
In the shops
AP Clutch Master Cylinder ↗
Moss Motors – Triumph TR6/TR250· $263.00 USD
Clutch Master Cylinder, MGB ↗
bpnorthwest.com· $34.83 USD
Clutch Master Cylinder Push Rod ↗
Moss Motors – Triumph TR6/TR250· $31.99 USD - Adjustable brake proportioning valveWilwood
Fitted to balance front/rear braking
In the shops
Complete Adjustable Brake Proportioning Kit ↗
Flyin' Miata· $74.99 USD - Front calipers and rotorsWilwood
Fitted as the front brake setup
In the shops
Wilwood Front Forged Dynalite Brake Kit - Red Calipers, Drilled Rotors (92-95 Civic, 93-97 Civic del Sol) ↗
JDMuscle — Mazda MX-5· $1,043.20 USD
Wilwood Forged Dynalite Front Hat Brake Kit - 11.00-Inch Rotor, Red Calipers (92-95 Civic, 93-97 Civic del Sol) ↗
JDMuscle — Mazda MX-5· $905.70 USD
Wilwood Combination Parking Brake Rear Kit - 12.19-Inch Drilled Rotor, Red Calipers (06-15 Civic) ↗
JDMuscle — Mazda MX-5· $1,197.89 USD - Rear disc brakesFord
Fitted at the rear axle
In the shops
Rear Brake Disc (Vented) ↗
British Auto USA· $61.57 USD
Rear Brake Disc (Jaguar 1965-87) ↗
bpnorthwest.com· $47.76 USD
Wheels & Tyres 2
- Mustang GT V6 aluminum wheelsFord
16x7 wheels, 5x4.5 lug pattern, 2005-2008 style
- G-Force Sport Comp-2 tyresBF Goodrich
215/55ZR16 tyres fitted to the wheels
Body & Trim 8
- Custom crate style grille
Fitted to the front of the car with hidden driving lights
- Mk3 vented front apron
Fitted to the front bodywork
- VW Rabbit rear fender flares
Installed at front and rear, mounted on MGB fenders and extended onto the apron
In the shops
Protec Rear Fender Flare Set for Nissan Skyline KPGC10 2D GT-R ↗
JDM Car Parts· $799.99 USD
Speed Forme FRP Fender Flare Set ↗
JDM Car Parts· $579.99 USD
Protec Front Fender Flare Set for Nissan Skyline KPGC10 2D GT-R ↗
JDM Car Parts· $799.99 USD - Rear valancePreform Resources
Fitted at the rear of the car
- MGB Mk1 taillamps
Fitted to the rear of the car
In the shops
MGB Roadster/GT Taillamp Lens ↗
Sports & Classics· $89.95 USD - Side view mirrorsVitaloni
California style mirrors fitted
In the shops
Mirror, rear view, chrome ↗Moss Europe (UK)· £40.00 GBP
MGB GT Interior Rear View Mirror Head ↗
Sports & Classics· $289.95 USD
Mirror, rear view, dashboard mounted, flat, black ↗Moss Europe (UK)· £24.50 GBP - Bimini style soft top
Fitted as the car's convertible top
In the shops
Soft Top Label ↗
Moss Motors – Triumph TR6/TR250· $3.75 USD
Soft Top Latch Bracket ↗
Moss Motors – Triumph TR6/TR250· $30.50 USD
Soft Top Window Repair Kit ↗
Moss Motors – Triumph TR6/TR250· $15.99 USD - LED hidden license plate lampsAlpena
Fitted behind the frenched license plate
In the shops
License Plate Lamp Lens ↗
Moss Motors – Triumph TR6/TR250· $23.99 USD
License Plate Lamp Assembly ↗
Moss Motors – Triumph TR6/TR250· $59.95 USD
Chrome License Plate Lamp Assembly ↗
Moss Motors – Triumph TR6/TR250· $27.99 USD
Interior 7
- Tilting steering column
GM-style column fitted to the interior
In the shops
Steering Column Cowl ↗
Moss Motors – Triumph TR6/TR250· $50.99 USD
Steering Column Cowl ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Steering Column Cowl ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD - Parking brake lever (EHB-7000F)Lokar
Fitted in the custom console
- CD/DVD playerClarion NX405
Head unit fitted in the dashboard
- AntennaAiskaer
Fitted for the audio system
- Reupholstered MGB seatsClassic Car Studio
Headrests removed, seats reupholstered
- Volt meter, tachometer, speedometer, coolant temperature and fuel level gaugesAutometer
Instrument cluster fitted in the dashboard
In the shops
Temperature Gauge ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Temperature Gauge ↗
Moss Motors – Triumph TR6/TR250· $199.95 USD
Temperature Gauge (1977-80) ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD - Oil pressure gaugeSmiths
Fitted to the instrument panel
In the shops
Oil Pressure Gauge ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Oil Pressure Gauge ↗
Moss Motors – Triumph TR6/TR250· $299.99 USD
Oil Pressure Gauge Bezel ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Other 5
- Finned air cleaner
Fitted to the induction system
- Idler pulley
Added for the serpentine belt setup
In the shops
Idler Pulley ↗Norman Motors Ltd· £0.00 GBP
Idler Pulley ↗Norman Motors Ltd· £0.00 GBP
Idler Pulley ↗Norman Motors Ltd· £0.00 GBP
- Oil separator
Fitted to the engine
- Racing oil filterFram Racing
Mounted remotely behind the driver-side headlight
In the shops
3" Racing Harness Pads by G-Force ↗
Moss Motors – Triumph TR6/TR250· $31.99 USD
3" Racing Harness Pads by G-Force - Black, Pair ↗
Moss Motors – Triumph TR6/TR250· $33.99 USD
VP Racing Cool Down Coolant Additive (16oz) ↗
MazSpec MX-5 Spares & Accessories· £14.40 GBP - Sway bar spacersArt Morrison Enterprises
Fitted as part of the front suspension setup
In the shops
Rear Sway Bar ↗
Moss Motors – Triumph TR6/TR250· $0.00 USD
Left Sway Bar Link ↗
Moss Motors – Triumph TR6/TR250· $23.99 USD
Right Sway Bar Link ↗
Moss Motors – Triumph TR6/TR250· $22.99 USD
Photos
40 pictures collected from the write-up, in the order they were posted, shown from BritishV8: the site for enthusiasts of modified British sports cars. A picture opens larger here, with the way through to the page it is on.
How it was done
Engine and drivetrain build
The Ford 302 was stroked to 347ci by Todd's Automotive Machine Shop using a Bessel Motor Sports race-prepped block with splayed four-bolt mains, a forged crank, Manley rods and Speed Pro pistons for 11:1 compression. AFR aluminum heads, an Erson roller cam and lifters, and a FAST XFI 2.0 fuel injection system with MSD ignition complete the package. Power runs through a Tremec 5-speed to a narrowed Ford 8.8 rear axle with Traction-lok.
Suspension and brakes
The front end uses Fast Cars coilover suspension, while the rear is a custom four-link fitted with two Panhard bars, one of which the writer notes is apparently redundant, located on Strange Engineering coilovers with QA1 springs. Braking is handled by Wilwood master cylinder and proportioning valve, Wilwood front calipers and rotors, and Ford rear discs.
Body, interior and exterior detailing
Bodywork includes deleted bumpers, a custom grille with hidden driving lights, VW Rabbit fender flares, louvered fenders, a two-level hood scoop and a custom two-tone white and red paint job. The interior features a modified Abingdon pillow-style dashboard, custom console and glovebox, reupholstered MGB seats, and a full Autometer gauge set.
Performance result
On the dynamometer the finished car produced 375 rear wheel horsepower and 341 ft-lbs of torque at 6600 rpm, with a recorded quarter mile of 9.8 seconds at 146 mph.
A summary in our own words. The full account, with all its detail, is in the original write-up: read it at BritishV8: the site for enthusiasts of modified British sports cars ↗