The 361 would continue in production until the end of the series, albeit only for truck installation. Design features of the B and RB engines include 17 capscrews per The 'B' series wedge engine was introduced in 1958 with 350 cu in (5.7 L) and 361 cu in (5.9 L) versions. The GTX received minor cosmetic changes to the tail lights and grille, as well as the side marker lights. Stylists made the lines smoother, and a "power bulge" hood was introduced, as well as non-functional rear-brake air scoops. The 350 cu in (5,735 cc) B engine was, along with the 361, the first production B engine, first available in 1958.
The 400 was used in car, truck, and motorhome chassis. The high performance 440 was standard in the GTX as was the TorqueFlite The GTX was positioned to be an upscale model of the In 1969, the GTX's sales dropped when the Road Runner was also offered in a convertible body style. "A special version of the 383 was created for the 1968 Plymouth Road Runner; it had heads, intake, camshaft, and exhaust manifolds from the 440 Super Commando.
carburetor, it was much easier to live with than either the Super Stock 426-III (aka Max Wedge Stage III) or the Super Commando (aka 426 Hemi), both which had at least 11.0:1 compression and finicky two 4bbl carbs. The standard 440 V8 was still rated at 375 hp (280 kW).
of torque.
The The only other performance luxury model in Plymouth's lineup was the full-size Sport Fury GT, built on the C-Body platform. Three versions of this engine were available: a two-barrel/single exhaust version producing 170 hp (127 kW; 172 PS) at 4,400 rpm with 305 lb⋅ft (414 N⋅m) of torque at 2,400 rpm, a four-barrel/single exhaust version producing 205 hp (153 kW; 208 PS) at 4,400 rpm, and a high performance four-barrel/dual exhaust version rated at 260 hp (194 kW; 264 PS) at 4,800 rpm, 410 lb⋅ft (556 N⋅m) of torque at 3,200 rpm. Chrysler increased the bore size of the 383 to create the 400. This venerable engine was introduced in 1959.
All RB wedge engines share a deck height of 10.725 in (272.4 mm), and were fitted with 6.768 in (171.9 mm) long connecting rods, resulting in a 1.80:1 rod ratio. The new budget performance version of the Belvedere featured the new 383 cu in (6.3 L) "Super Commando" V8 (renamed the "Road Runner 383").
The GT was added to the lineup in 1970. Plymouth called it the Commando 426 and it offered 365 horsepower and 470 ft-lbs. For 1972 through 1974, any Road Runner ordered with the optional 440 was renamed Road Runner GTX and included the badging of both previous models. A new body style was offered for the Fury III, the “Fast Top,” which was a two door semi-fastback hardtop previously only available as a VIP or a Sport Fury. The 440 Six Barrel was down to 385 hp (287 kW), but the Hemi was still rated at 425 hp (317 kW). The last performance year for the Max Wedge came in 1964 with the Stage III. The 400 cu in (6.6 L) B engine was introduced in 1972 to replace the venerable 383, and were power-rated via the net (installed) method. Known as the Super Stock Plymouth and Ramcharger Dodge, the Max Wedge featured high-flow cylinder heads developed through state-of-the-art (at the time) airflow testing.Before the end of the 1963 model year, Chrysler introduced the Stage II Max Wedge with improved combustion chamber design and an improved camshaft. The 361 had a fuel injected version in 1958 only.The 383 cu in B engine — not to be confused with the RB version — was essentially a larger bore version of the 350 and 361, using a 4.25 in (108.0 mm) bore for a 383.03 cu in (6,277 cc) displacement. It also had less insulation and comfort items, which reduced weight and kept it in the low price field. All three versions used the same 8.2:1 compression ratio.
A new hourglass body replaced the previous rectilinear design.
For its last year of production, it only produced 190 hp (142 kW) (although a heavy-duty version was also available).Due to its large factory bore size, short (compared to RB engines) deck height, and bottom end strength that is greater than any other production B or RB engine due to extra material added around the main bearing caps,The 413 cu in (6.8 L) RB was used from 1959 to 1965 in cars. All RB engines have a 3 ⁄4 in (95.3 mm) stroke, with the bore being the defining factor in engine size. Horsepower and torque ratings gradually declined through the years due to the addition of more federally mandated emissions controls, until all Chrysler passenger vehicle big-block production ceased in 1978. With 10.3:1 compression and a 4bbl. The 440 cu in (7.2 L) RB was produced from 1965 until 1978, making it the last version of the Chrysler RB block. The factory-advertised power rating never changed despite the Stage II and III improvements. Emission restrictions such as lower compression ratios and faster-acting choke operation lowered the base 440 output by 5 hp (3.7 kW), to 370 hp (280 kW).
Bore center distance is 4.8 in (120 mm). Due partly to rising insurance rates on muscle cars, sales were low.
There were less than 3,000 units produced in 1971. It had a light wall construction, precision cast-iron block, with iron heads and a bore of 4.32 in (109.7 mm), for an overall From 1967 to 1971, the high-performance version was rated at 375 bhp (380 PS; 280 kW) (370 bhp (375 PS; 276 kW) in 1971) at 4,600 rpm and 480 lb⋅ft (651 N⋅m) at 3,200 rpm of The high-output 440 (4-barrel/mild cam/dual exhausts) was marketed as the Chrysler also offers complete new 'crate' engines through its Mopar parts division in various displacements, these engines are built from entirely new parts.
Of those, eleven were equipped with the 426 Hemi; four were 4-speeds and seven had TorqueFlite automatics.