All information is taken from http://www.musclecarclub.com/

1970 442 Oldsmobile

Comments: 1970 saw the lifting of GM's ban on engines greater than 400 cid installed in midsize cars. Although Oldsmobile had gotten around that rule in 1968 and 1969 through the Hurst/Olds, this now enabled Oldsmobile to offer its 455 cid V8 in all 4-4-2s. The Hurst/Olds was dropped from the lineup and wouldn't reappear until 1972. The W-30 hit its performance peak and included a balanced and blueprinted 455 V8 with a hotter cam, performance carb, low-restriction exhausts and the Force Air induction system which utilized two prominent scoops on the hood. The W-30 package also included a lightweight fiberglass hood, plastic inner fenders, aluminum diferential carrier and cover, and less sound insulation in an attempt to cut weight and improve performance. The W-30 option was offered only on Cutlass models, but a new option, the Rallye 350, was offered. Powered by a 350 cid engine, the smallest displacement Oldsmobile muscle car sported the most outrageous exterior, which was only painted in a very bright yellow. Even the bumpers and wheels were painted yellow. This would be only a one year option as the performance market would collapse after 1970.

Production:
2D Sport Coupe: 1,688
Holiday Hardtop Coupe: 14,709
Convertible: 2,933

Engines:
(Rallye 350) 350 V8 310 bhp @ 4200rpm, 490 lb-ft @ 2400 rpm.
455 V8 365 bhp @ 5000 rpm, 500 lb-ft @ 3200 rpm.
(W-30) 455 V8 370 bhp @ 5200 rpm, 500 lb-ft @ 3600 rpm.

Performance:
(W-30) 455/370: 0-60 in 5.7 sec, 1/4 mile in 14.2 sec @ 100mph.

1972 Chevrolet El Camino SS




Comments: 1972 saw further dilution of the El Camino SS. GM decreed that all engines had to be reported with their net engine ratings, which resulted in several sharp decreases even though engine power was not necessarily changed. The 350 V8 dropped to 175bhp, the 402 to 240bhp, and the 454 to 270bhp. The El Camino was basically unchanged from the year before, with just new turn signal/marker lamp units and the deletion of the Chevy bowtie from the grille. The new grille was black, but the horizontal chrome divider piece was deleted.

Production:
Engines: L65 350 V8 165bhp@4000rpm, 280lb-ft@2400rpm. 350 V8 175bhp@4000rpm, 280lb-ft@2400rpm. LS3 402 V8 240bhp@4400rpm, 345lb-ft@3200rpm. LS5 454 V8 270bhp@4000rpm, 390lb-ft@3200rpm.

1972 Dodge Charger

 

Comments: Starting in 1972, Chrysler had to detune its engines to meet ever stricter emissions laws. They also began to quote engine ratings in terms of net output (engine output with all accessories), rather than gross output. This lead to some dramatic "declines" in rated engine power. With the Hemi gone, the 440 Six Pack became the top engine choice. Its output dropped from 385bhp gross to 330bhp net. The regular 4 bbl 440 dropped from 370bhp gross to 280bhp net. The 383 was unable to meet the new emissions requirements and was dropped. A new 400 V8 which offered 255bhp net took its place.

Production:
Engines: 318 V8. 400 V8 255bhp net. 440 V8 280bhp net. 440 Six Pack V8 330bhp net
Performance:

 

Rebel Machine

A souped-up version of the Rebel called The Machine appeared in 1970 with a 340 bhp version of the 390 (the most powerful engine ever produced by AMC), which hauled its 3,650 pounds through the quarter mile in 14.5 seconds. The combination of wild graphics and flying-brick styling makes the Machine a real love-it-or-leave-it proposition. Machines, unlike SC/Ramblers, were available with virtually all factory options, and after the first 1,000 they were available in regular factory colors without the stripes. Total production was 2,326, with prices starting at $3475.

1970 Chevrolet Chevelle SS

 

Comments: 1970 saw the introduction of the most powerful Chevelle SS of all time. Responding to the lifting of GM's ban on engines larger than 400 cid in midsize cars, Chevrolet responded by dropping in a new 454 cubic engine into its Chevelle SS. The entry level 454 was known as the LS5 and packed 360bhp. The top engine choice was the LS6 version with 450bhp. The LS6 had a 800-cfm Holley four barrel on an aluminum manifold, 11.25:1 compression, solid lifters, four-bolt mains, forged steel crank and connecting rods, forged aluminum pistons, and deep-groove accessory pullies. No production engine ever had a higher factory horsepower rating. The standard Chevelle SS 396 continued with its 402 cid engines, although the 325bhp was dropped and the 350bhp version was now standard. Optional on both the 396 and 454 was a new cowl-induction hood, which had a rear facing flapper near the base of the windshield to feed air into the engine. The styling was new with a "vee" front end, functional hood pins, and five-spoke Rallye wheels. This was truly the pinnacle of the Chevelle SS performance.

Production: 53,599
Engines: L34 402 V8 350bhp@5200rpm, 415lb-ft@3400. 402 V8 375bhp@5600rpm, 415lb-ft@3600rpm. LS5 454 V8 360bhp@5400rpm, 500lb-ft@3200rpm. LS6 454 V8 450bhp@5600rpm, 500lb-ft@3600rpm.
Performance: LS6 454/450: 0-60 in 6.1 sec, 1/4 mile in 13.7 sec @ 103mph.

 

1970 Chevrolet Nova SS

 

Comments: The big change for 1970 was Chevrolet's decision to slightly modify the venerable 396 engine to meet new emission standards. The result was a slight enlargement of the big block to 402 cid although Chevrolet still refered to the engine as the "396" or the "Turbo Jet 400" to take advantage of its name recognition.

Production: 19,558
Engines: 350 V8 295 bhp. 402 V8 350 bhp. 402 V8 375 bhp.


1969 Chevrolet Camaro

 

Comments: 1969 saw several noteworthy changes to the Camaro. The grill became deeper set, the taillamps were longer and thinner and broken into three segments. A heavy "eye-brow" crease was added on the both sides of the car extending from the front wheel well to the rear wheel well. A matching crease went from the rear wheel well to the rear quarter panel. The Camaro also received new fenders, door skins, rear quarter-panels, grille and taillights which gave it a wider, lower appearance. Inside, the Camaro received a redesigned dash and more comfortable seats. Endura rubber bumpers were available on the Camaro as well as two ram air induction systems for the SS. The first was a new special hood with a rear facing inlet and cold-air duct underneath the hood. The second was a dealer installed cowl plenum kit that came with a special air cleaner and adapter. No special hood was needed. 1969 saw an explosion in engine choices. On the low-performance side, a new 307 V8 (a 327 crank in a 283 block) rated at 200bhp was added and a new 350 V8 rated at 255 bhp replaced the more powerful 327 engine. The Z28 continued with its seriously under-rated 302 (now called DZ) engine. The RS package was still popular, and included a special grill with concealed headlights (of a ribbed design) and washers, chrome wheel well moldings, drip rails, pinstripes, and RS badging. The SS standard 350 received a slight power boost to 300 bhp while the 396 engines continued in 325/350/375 bhp versions. Once again, a white RS/SS convertible with the 396 engine paced the Indianapolis 500 race, and Chevy offered replica versions as white convertibles with orange stripes and orange houndstooth upholstery (though most replicas were powered by 350 engines. Because of their collectibility, there are many "fake" 1969 Pace Car replicas out in the collector market so be careful if you are planning on buying one.


Production:
RS: 37,773
SS: 33,980
Z-28: 19,014

Engines:
250 I6 155bhp @ 4200rpm, 235lb-ft @ 1600rpm.
Z28: 302 V8 290bhp @ 5800rpm, 290lb-ft @ 4200rpm.
307 V8 200bhp @ 4600rpm, 300lb-ft @ 2400rpm.
327 V8 210bhp.
327 V8 275bhp.
350 LM1 V8 255bhp.
(SS350) 350 V8 300bhp @ 4800rpm, 380lb-ft @ 3200rpm.
(SS396) 396 V8 325bhp @ 4800rpm, 410lb-ft @ 3200rpm.
(SS396) 396 V8 350bhp @ 5200rpm, 415lb-ft @ 3200rpm.
(SS396) 396 V8 375bhp @ 5600rpm, 415lb-ft @ 3600rpm.
(COPO 9561) 427 V8 425bhp @ 5600rpm, 460lb-ft @ 4000rpm.
(COPO 9560) 427 V8 430bhp @ 5200rpm, 450lb-ft @ 4400rpm.

Performance:
(Z-28) 302/290bhp: 0-60 in 7.4 sec, 1/4 mile in 15.12 sec @ 94.8mph.
(SS396) 396/375bhp: 0-60 in 6.8 sec, 1/4 mile in 14.7 sec @ 98.7mph.
(COPO 9561) 427/425bhp: 0-60 in 5.4 sec, 1/4 mile in 13.5 sec @ 102mph.
(COPO 9560) 427/430bhp: 0-60 in 5.3 sec, 1/4 mile in 13.16 sec @ 110 mph.

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