Thread: 1937 Plymouth 5 Window Coupe

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Well the excitement of building the engine finally got the better of me and I had to start. My plan is to build a 383 stroker. I talked to a lot of people and did a lot a research. Once that was complete I ordered up the parts. Here is what I came up with for my engine build.

Block:
• Summit Racing Block
• Part #SUM-150100-30
• 1996-2000 GM Block
• 4 bolt main
• .030 overbore
• Lined honed mains
• Lined bored cam
• Clearanced/Machined for 3.75” stroke
• Machined deck surface

Crank:
• Scat 9000 Series
• Balanced
• Cast Steel
• One piece RMS
• 350 Mains
• Polished Crank
• 3.75” stroke

Rods:
• Scat Pro-Competition Rods
• 6” Rod Length
• Forged 4340 Alloy
• ARP 8740, 7/16” Cap Screws
• Rod to cam clearancing and sizing

Pistons:
• Wiseco Pistons
• Fully forged
• 4.030 (.030 over)
• -10 cc Dish Top
• D-Cup
• 1.140 Compression Height
• Forged 2618 Aircraft Alloy
• Hastings 2M High Performance, Moly, Standard tension rings

Bearings, Damper, and Flexplate:
• Clevite bearings
• Balanced on CWT balancer
• Pro-Race 6.75” Damper
• Heavy Duty flex plate

Cam:
• Howards Cam
• Part #180345-10
• Hydraulic Roller
• Valve lift = Int. 565/Ext .580
• Duration @ 0.050" = Int. .245/Ext .253
• Lobe Separation = 110 Deg

Heads:
• NKB Ultra High Flow Aluminum Heads
• Part #NKB-200-274
• 200 cc Runners
• 64 cc Combustion Chambers
• 2.02/1.60 Stainless Steel Valves
• Melling 1.46 diameter dual roller springs
• Howards 7.250” Pushrods, 4130 Chromoly, .080 wall thickness, 5/16” diameter
• Straight Plug
• ARP 7/16” Rocker Studs
• Dart Guide Plates
• Extreme Duty Gold Series Stud Girdles and 7/16” Poly Locks
• ARP Head Bolts
• Multi layered graphite/steel, .030 thick head gasket

Rockers:
• COMP Cams
• 17005-16 High Energy
• 7/16" Stud Diameter
• Die Cast Aluminum Roller Rocker Arm
• 1.6 Ratio

Timing Chain:
• Cloyes Hex-A-Just Timing Set
• Part #220-9-3145A-10

Intake:
• Edelbrock 7501 Performer Air-Gap Intake
• Aluminum
• Dual Plane

Carb:
• Quick Fuel SS-750 Carburetor
• Super Street,
• 750 cfm
• 4-Barrel
• Electric Choke,
• Mechanical Secondary
• Double Pumper
• 4.5 Power Valve.

I am in the process of building this engine now in my shop. I hope to have it complete in the next week or two. This engine build is supposed to produce around 510 horsepower at 6200 RPM with 10.5 to 1 compression on pump gas. Of course this is only on paper so the real answer is yet to be determined. Either way this should be lots of power for the old Plymouth. Of course one can never have too much power right……

On a side note I now have a tune port injected 305 SBC (that I know nothing about) sitting in the garage if anybody needs one.

Here are a few pics of the progress.










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