The Mopar 383 {1962 thru 1967} ~ 'You Magnificent Bastard'

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69 Cuda 440

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The Mopar 383 {1962 thru 1967} ~ 'You Magnificent Bastard'

An overview of the 'durable' 383 from 1962 thru 1967.

1962
* 383/305 HP ~ 2-Barrel ......... 305 HP @ 4600 RPM's
* 383/330 HP ~ 4-Barrel ......... 330 HP @ 4600 RPM's
* 383/343 HP ~ 2 x 4 Barrel .... 343 HP @ 5000 RPM's

Lets take a look >
 
Lets take a look .. Got involved in Mopars,late '80's .. The first Mopar that hit hard I liked.. A 70 Challenger, stock cast piston short block : .484 Purple worked heads, basic headers/ 4:30 gears / 10" 3200 stall T/A converter.(11:70's in it.... Y2K reboot,first kid's hot rod... '01 the car club found "a virgin 383 Magnum" long block.. The scary part: the stock shirt block,was sweet!!!) We tapped it ,for the bigger 1/2" pickup ,& better pan.A Crower grind close to the "440 Magnum " grind, lapped the valves on stock heads,shimmed the valves. No head work, no converter: Went 14:20's- 13.90's with 3:23's & and a buttload of family tuning..
 
1962

383 > Low-Deck 'B' Block

383/305 HP ~ 2-Barrel
Compression ............... 10.0-1 {Flat-Top Pistons}
Piston Deck Height ..... {-.051"}

Cylinder Head ............ #2206324
Valve ......................... 2.08" Intake ~ 1.60" Exhaust
Valve Springs ............. Single-Coil w/Damper
Combustion Chamber .. 71.0 CC's {Minimum}

Camshaft {Hydraulic} .. .431"/.431" ~ 268*/268* ~ 48* Overlap

* A Carter BBD 2-Barrel {365 CFM} with 10.0-1 Compression.

This 'upgrade Engine' was found as standard equipment in the high-end 1962
Dodge Polara 500, and big Chrysler's.
 
fratzog lover said:
Not a very big carb, was it?
Click to expand...

Yes, that was puny for a 2-Barrel tossed on a 383 with 10.0-1 Compression.

305 HP @ 4600 RPM's
410 Ft/Lbs. of Torque @ 2800 RPM's

A torque-y monster though.
-------------------------------------------------------------------------------------

Next up the 383/330 HP ~ 4-Barrel

330 HP @ 4700 RPM's
425 Ft/Lbs. of Torque @ 2800 RPM's

Same Compression, Cylinder Heads, Camshaft and Valve-Train as
the 383/305 HP ~ 2-Barrel.

But, equipped with >
* Carter AFB {566 CFM} 4-Barrel {1 7/16" Primary x 1 9/16' Secondary}
* Dual-Exhaust
* Dual-Breaker Distributor
 
Yes, those cam specs were great for moving a c body through traffic and up hills from 1500 to 3000 r's. Downshift? We dont need no stinkin downshift.
 
~ You Magnificent Bastard ~

The 'famous' 383/343 HP ~ 2 x 4-Barrel

343 HP @ 5200 RPM's
425 Ft/Lbs. @ 2800 RPM's

El Facto Mundo >

This combination was never installed on a 1962 Mopar 383 coming out of the Factory.

Yes, that is true.

This package was a mid-year addition, where the following components were
installed in the trunk.

* Dual In-Line Cast Iron Intake Manifold
* '2' Carter AFB Carburetors {#2790; Front} and {2791; Back} = 480 CFM's each
* Linkage
* High-Pressure Fuel Pump {3-Valve}
* Special 'Football-Shaped' Air Cleaners
* Special '413' Long-Branch Exhaust Manifolds
* Clay Smith 'Mechanical' Camshaft
* Solid Tappet Lifters
* Dual High-Load Rate Valve Springs
* Heavy-Duty Valve Spring Retainers
* Mopar '300 J' Cylinder Heads
* Adjustable Rockers w/Special Locking Nuts
* High-Strength Push Rods

When installed in a 1962 Dodge 'Model 440' 2-Door Hardtop #3261 lbs.,
the Dodge came in at a near perfect 9.51 Wt/HP to fit into the {9.50 to 10.59}
Weight Class.
 
What casting#s on those heads? Valve size? Closed chamber? Love this thread!
 
mguner said:
What casting#s on those heads? Valve size? Closed chamber? Love this thread!
Click to expand...

'300 J' Cylinder Heads
Casting # .... 2402557
Design ........ Closed Chamber

Intake Valve ...... 2.08"
Exhaust Valve .... 1.74"

These Cylinder Heads were permitted to be milled to 66.5 CC's by the NHRA.

Piston Deck Height .......... {-.051"}
Gasket Thickness ............. {.020"}

This gave the 1962 383/343 HP > closer to 11.0-1 Compression with the Flat-Top Pistons.

The Clay Smith Camshaft 'Mechanical'
Lift ............ .445"/.445"
Duration ..... 284*/284*
Overlap ...... 55*

Note:
In late-1966, when the '300 J' Cylinder Heads became obsolete {not produced} or difficult to get. The NHRA permitted the 1967 440 HP #915 Cylinder Heads
to be utilized on the 1962 383/343 HP Engines.
 
Rocco Bosco,

The NHRA approved the 383/343 HP combination for the 1963 NHRA campaign
in the 1962 Plymouth or Dodge 'only'.

1st time out at the 1963 NHRA Winternationals.

Rick Johnson in a 1962 Dodge 'Model 440' set the NHRA 'B/SA' National Record.
 
1962 383

Follow This >

383/305 HP ~ 2-Barrel
Compression Ratio ............................. 10.0-1 {Flat Top Pistons}
Piston Height ................................... {-.051"}
Cylinder Head Combustion Chamber ..... 71.0 CC's

383/343 HP ~ 2 x 4-Barrel
Compression Ratio ............................ 10.0-1 {Flat Top Pistons}
Piston Height .................................... {-.051"}
Cylinder Head Combustion Chamber .... 66.5 CC's

Mopar Engineers, You Magnificent Bastards
 
69 Cuda 440 said:
1962 383

Follow This >

383/305 HP ~ 2-Barrel
Compression Ratio ............................. 10.0-1 {Flat Top Pistons}
Piston Height ................................... {-.051"}
Cylinder Head Combustion Chamber ..... 71.0 CC's

383/343 HP ~ 2 x 4-Barrel
Compression Ratio ............................ 10.0-1 {Flat Top Pistons}
Piston Height .................................... {-.051"}
Cylinder Head Combustion Chamber .... 66.5 CC's

Mopar Engineers, You Magnificent Bastards
Click to expand...

It should read, "Mopar Advertising, You Magnificent Bastards!" :)
 
1962 383/343 HP

The Carter AFB Carburetors

Originally for late-1962

Front ... #2798 ..... 1 7/16" Primary ~ 1 9/16" Secondary {Venturi 1.063" x 1.125"}
Rear .... #2799 ..... 1 7/16" Primary ~ 1 9/16" Secondary {Venturi 1.063" x 1.125"}

Up-grade for 1963

Front .... #3258
Rear ..... #3259

These Carter AFB's had a larger Secondary Venturi at 1.250"

Worth another 30 CFM's.

Mopar Engineers, You Magnificent Bastards
 
Frito Lay,

True Fact,

Back in late-1962, Mopar tried the 413 Maximum Performance Camshaft
{.490" Lift ~ 300* Duration} in the 383/343 HP ~ 2 x 4-Barrel.

It destroyed the low-end Torque.

The term 'too much Camshaft' was used. It was back to the {.445" Lift ~ 284* Duration} Clay Smith unit.
 
1963

* 383/305 HP ~ 2-Barrel ..... 10.0-1 Compression Ratio ....... {-.023" Piston Height}
* 383/330 HP ~ 4-Barrel ..... 10.0-1 Compression Ratio ....... {-.023" Piston Height}

Same Compression Ratio, and same Cylinder Heads with a 73.5 CC combustion chamber

Camshaft {Hydraulic} ... Lift .............. Duration ..... Overlap
383/305 HP ............ .398"/.398" ....... 252*/260* ...... 32*
383/330 HP ............ .431"/.431" ....... 268*/268* ...... 48*

It was too bad that Mopar didn't offer the 383/343 HP ~ Dual-Quad for the
sharper looking 1963 Model cars.
 
Pepper-Pete,

In 1963, here are the Compression Rates for the 383

383/305 HP ~ 2-Barrel ....... 9.2-1
383/330 HP ~ 4-Barrel ...... 10.0-1

Both had the same Cylinder Heads with a 73.5 CC Combustion Chamber.

And both had the same Piston/Deck Height at {-.014"}

But, the 383/305 HP had Dish-Pistons with a .045" recess {= 5.11 CC's}

Mopar Engineers...... You Magnificent Bastards

On the 383, Mopar Facts........ 5.11 CC's = .8 in Compression Ratio.
 
We have a 1962 440 Dart 383 2/4bbl auto. Ran AHRA D. optional stock auto, D/OA on a 13.91 nat. record in the 1970's.
 
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