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Camaro RS / SS / Z28 options 1967 to 1969

The Z28 moniker originates from the Chevrolet Regular Production Order (RPO) codes and the RPO Z28 is a designated special performance package. The ’68 models have few sheet metal revisions although they have a very different look. The newly introduced Astro ventilation system is fresh air inlets dash mounted which renders the side venting as obsolete so these are forever deleted starting in the ’68 model year. The ’68 models now have side marker lights to conform to newly introduced regulations as well as the front running lights are changed from round to oval but the Rally Sport (RS) option retains the round version. The grill has a more pointed look and the tail lights are shorter and separated from each other. If you chose the SS option with a large engine for ’68 it would be equipped with the new chromed hood inserts simulating velocity stacks. Any high performance Camaro will come with multi-leaf rear springs while lesser models retain the single leaf spring as well on the big block options the rear shocks are staggered to minimize wheel hop from a standing start rapid acceleration. In ’68 Chevy advertises the new 396 cu in (261 kW) engine for the SS and the Z28 packages. Many dealers such as Dana, Yenko, and Baldwin-Motion have a dealer order only optional 427 engine, not available as a RPO from the factory, to replace the 396 if you want to step your new Camaro up a few notches.Capture3

If you had optioned a new 1969 Camaro the car would retain the same under pinning as last year but, other than the hood and trunk, the sheet metal has taken a complete change and now look sportier. The Camaro has attitude this year with the headlights inset more, the grill angled obliquely, upgraded door skins, revised rear quarter panels, altered rear valance, the car is wider, longer, and lower looking. For collectors and other enthusiasts a common topic of discussion is the smooth and rounded 67/68 models and how they contrast the more sharply angled, sporty '69 versions. The combined RS/SS packages the exterior would have headlight covers- three vacuum pressure operated semi-transparent louvers and also have a headlight washing system.

Chevrolet Camaro Z28 1969© Gwhitton | Dreamstime.com - 1969 Chevy Camaro Z28 Photo

This uptown combination package comes with a blacked out grill, black rocker panels, fender stripes, accented air vents, with the same treatment for the tail lights while the backup lights in ’69 are now below the bumper. The package is easily identified by RS logo’s on the front fenders, on the grill, with the steering wheel sporting the RS symbol as well. On any ’69 Camaro including all option packs the car can have front disc brakes but only if ordered although the rear is a drum braking system. The automobile is sitting on wheels 108 inches apart and features the recirculating ball steering system on all units. There were 235,147  Camaro models roll off the assembly line in 1968-most are the RS with 40,977 units, the SS version 27,884 units, a better advertising for the Z28 brought the sales figure up to 7,199.There are no figures available for the production of the RS/SS combined package or the RS/Z28 units. For the 1969 model year this sales of all Camaro models climbs a bit to 243,085 with RS sales dropping to 37,773 units, while the SS choice climbs by 20% or so to 34,932 with the Z28 taking the biggest jump to 20,302 units-almost triple the ’68 figures.


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Pontiac GTO 2004-2006 Fourth Generation

The fourth generation GTO is a rebadged G3 Holden Monaro; wholly manufactured and imported from Australia for the N, American markets. Bob Lutz, a board member of GMC in the States, had read an article in Car and Driver magazine on the power and performance of the Holden Monaro. Bob  later drove a Monaro while on a business trip to Australia, which convinced him it would be the perfect car for the American muscle car market revival and a profitable venture for GMC.  The idea is also attractive to General Motors because it promotes a closer relationship with GMC internationally owed holdings. The Monaro receives a new “Pontiac” looking grill insert, the GTO motif is embossed into the front seats and a tuned exhaust are the biggest changes made. The original Monaro style duel exhaust is kept, but the rumble emitted from the twin tailpipes is reminiscent of the Iconic ‘’60’s GTO and not by accident. The sounds had been stored in GMC’s historical archives and these recordings were studied in detail to achieve a similar sound effect for the new GTO. The Holden Monaro genuine duel exhaust system is duplicated and the two independent pipes exit the vehicle at the rear, both on the driver’s side, but with the right sound.

GTO 2005-06 (8)

The car is factory equipped with a 5.7 Liter LS1 V8 engine, which is the same power plant under the hood of the ’04 Corvette, and it is bolted to a four speed automatic or the six speed standard transmission. The G4 GTO can do 0-60 mph (97 km/h) in 5.4 seconds and will do the quarter mile in 13.8 seconds, according to Pontiac tests and is backed up by assorted magazine tests as well. Mr. Lutz engineered the importing of the new GTO, but the original price tag had been inflated from the $25,000 USA funds to more than $34,000 by the time the vehicle was actually landed in the USA, partially due to a drop in the value of the greenback in relation to the Ozzy currency.

GTO 2005-06 (3)

The American public received the vehicle coolly, not only due to its high initial cost, but the GTO was also a little non-descript looking to appeal to true muscle car fans. The majority of performance demanding buyers were more attracted to the Ford Mustang, Dodge Magnum or the Chrysler 300. It is 2004 before the Monaro reaches here, after making revisions to meet our stricter crash test standards. There were only  13,569 sold in ’04 of the 15,728 units that were shipped,  or almost 15% less than the original 18.000 ordered. A dealer installed sport appearance package was offered in ‘04 that would become basic equipment next year consisting of a deeper inset grill and a taller spoiler on the rear deck. The last 794 GTO models to enter the country all came with the W40 appearance pack which included a pulse red exterior paint, matching red embroidery on the seats and a gray colored instrument cluster.

GTO 2005-06 (9)

For 2005 the rear fascia is refreshed and the latest GTO is now basically equipped with optional hood scoop from last year and there are now 18 inch rims also on the table. The biggest news is a new 5.96 Liter (364.1 cu in) LS2 engine that delivers 400 hp (300 kW) and produces 400 lb-ft. (542 N·m) of torque. GMC published test results for a GTO powered by the LS2 engine equipped with the automatic transmission rate the car at 0-60 (97 km/h) in 4.8 seconds and  the quarter mile in 13.3 seconds achieving 105 mph (169 km/h) in the process. Car and Driver does a similar test with a standard transmission GTO turned in an 11.7 second time going from 0-100 mph (160 km/h) and 0-130 mph (209.2 km/h) in 19.6 seconds, but equipped with BFGoodrich g-force 17 inch rubber.The car is equipped with a heavier drive shaft, upgraded half shafts and a bigger flange on the differential to handle the added power. The newer version also adds larger rotors and calipers complete with other hardware which are the same as the Corvette’s. The instrument readout graphics have been changed in all units for ‘05 and there is a new dealer installed Sport Appearance Package available. This pack adds aftermarket muffling system complete with four exhaust pipes, a different spoiler, altered rocker panels, a more recessed grill, then also includes a front and rear fascia extension kit to give a ground hugging look. There were only 24 units of the GTO sold to customers without a hood scoop and 17 units that left the factory with the chrome rim option out of a total of 11,069 vehicles imported in ‘05.

GTO 2005-06 (6)

There are only a few minor changes in 2006 for the GTO with a slight increase in the units sold this year and a total production of 40,808 units over the three year run.

 


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Chevrolet 1955 – 1998 Small Block number-2

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The reasons for the small blocks popularity over its five decade life span can be attributed to its compact light weight and a strong support team with a wide variety of parts readily available. All the Chevy V8 engines from the early “W”, to the big blocks including today’s LS7 and LS9 have evolved from the original 265 small block. This engine is categorized in families by bore size; with the first two in engines in the original family, the 265 and the 283 going into automotive history.

The 3.875 inch bore family from 1955 to 1973-three members:

The start of the long procession of small block V8’s is the 265 which has a two year production run before evolving into the 283. The 265 was initially produced to give the Corvette a more powerful engine than the inline stove bolt six used in the 1955 models. From the design studio to the production floor took only 15 weeks for Ed Cole and his team for the original two barrel carburetor 165 hp (123 kW) version. The engine is a cast iron block, cast push rods, with hydraulic lifters; the power plant is oversquare with a 3.75 inch (95 mm) bore and a 3 inch (76 mm) stroke-for many decades the 4.4 inch (111.8 mm) bore spacing would remain a standard. The Bel Air for ’55 came with a two barrel developing 162 hp (11 kW) but with the option of a Rochester four barrel added giving the engine 195 hp (145 kW). A further option is the “power pack” which adds a dual exhaust and with the four barrel the Bel Air delivers 180 hp (134 kW). The 1955 Corvette had three power option 265 engines; the single four barrel delivers 210 hp (157 kW), the twin four barrels offer 225 hp (168 kW), or added to those for the ultimate Corvette in ’55 is with the high lift camshaft which gives the ‘Vette 240 hp (179 kW).The 265 is not an engine for a casual owner or regular driver in spite of its original sand cast green color-it is a collector’s item only because it lacks adequate oil filtration with its add-on filter.

The 283 cu in (4.64 L) engine is a 265 bored to 3.875 inches (98.4 mm) with a 3.00 inch stroke which becomes available for the 1957 model year. These first versions used the original 265 blocks and they are overbored which make for thin walled cylinders. The later 283 engines were cast with thicker walled blocks to accept the larger bore. There are five power versions of the 283 available offering from the carbureted entry level two barrel putting out 185 hp (138 kW) or with twin carburetors gives a few more horses. With the Ramjet mechanical fuel injection the 283 achieves 283 hp (211 kW)-one hp for each cu in displacement in the 1957 model year. This however, is not the first engine to reach the goal Chrysler did the same in the 1956 model year. The horse power ratings increased each year with the 283 topping out in 1961, still using the injection at 315 hp (231.68 kW). The Chevy 283 was also available for the Checker Cab line up and in Canada the Studebakers for ’65 and ’66 could be ordered with this engine

The last of the 3.875 inch bore family is the 307 (5.025 L)-the higher displacement is attained by increasing the stroke to 3.25 inches (82.6 mm) and was the standard V8 offered from 1968 through 1973. The 327 engine is the source of the crankshaft which offers the longer stroke. The engine is also used by GMC in South Africa and the Australian Holden subsidiaries.


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Pontiac GTO 2004-2006 G4

The fourth generation GTO is a rebadged G3 Holden Monaro; wholly manufactured and imported from Australia for the N, American markets. Bob Lutz, a board member of GMC in the States, had read an article in Car and Driver magazine that gives a sizzling report on the power and performance of this Holden model; then later on he drove a Monaro while on a business trip to Australia.

GTO 2005-06 (8)

The car was factory equipped with a 5.7 Liter LS1 V8 engine, which is the same engine as the ’04 Corvette, and it could be bolted to a four speed automatic or the six speed standard transmission. The man became convinced that this would be the perfect car for the American muscle car market revival and would be a profitable venture for GMC. The idea is also attractive to General Motors because it promotes a closer relationship with GMC internationally.

GTO 2005-06 (3)

The Monaro receives a new “Pontiac” looking grill insert, the GTO motif is embossed into the front seats and a tuned exhaust are the biggest changes made. The original Monaro style duel exhaust is kept, but the rumble emitted from the twin tailpipes is reminiscent of the Iconic ‘’60’s GTO, although this is not by accident. These sounds had been stored in GMC’s historical archives and the recordings were studied in detail to achieve a similar sound for the new GTO. The Holden Monaro genuine duel exhaust system is duplicated and the two pipes exit the vehicle at the rear, both on the driver’s side. The G4 GTO can do 0-60 mph (97 km/h) in 5.4 seconds and will do the quarter mile in 13.8 seconds, according to Pontiac tests and does seem to be close to accurate, backed up by assorted magazine tests as well. Mr. Lutz engineered the importing of the new GTO, but the original price tag had been inflated from the $25,000 USA funds to more than $34,000 by the time the vehicle was actually landed in the USA, mostly due to a drop in the value of the greenback in relation to the Ozzy currency. The American public received the vehicle coolly, not only due to its high initial cost, but the GTO was also a little non-descript looking to appeal to muscle car fans. The majority of performance demanding buyers were more attracted to the Ford Mustang, Dodge Magnum or the Chrysler 300. It is 2004 before the Monaro reaches here, after making revisions to meet our stricter crash test standards.

GTO 2005-06 (9)

There were only of the 15,728 shipped units that were 13,569 sold in ’04 which is less than the original 18.000 units ordered. A dealer installed sport appearance package was offered in ‘04 that would become basic equipment next year included a deeper inset grill and a taller spoiler on the rear deck. The last 794 GTO models to enter the country all came with the W40 appearance pack which included a pulse red exterior paint, matching red embroidery on the seats and a gray colored instrument cluster.

GTO 2005-06 (6)

For 2005 the rear fascia is refreshed and the latest GTO is now basically equipped with optional hood scoop from last year and there are now 18 inch rims also on the table. The biggest news is a new 5.96 Liter (364.1 cu in) LS2 engine that delivers 400 hp (300 kW) and produces 400 lb-ft. (542 N·m) of torque. GMC published test results for a GTO powered by the LS2 engine equipped with the automatic transmission rate the car at 0-60 (97 km/h) in 4.8 seconds and  the quarter mile in 13.3 seconds achieving 105 mph (169 km/h) in the process. Car and Driver does a similar test with a standard transmission GTO turned in an 11.7 second time going from 0-100 mph (160 km/h) and 0-130 mph (209.2 km/h) in 19.6 seconds, but equipped with BFGoodrich g-force 17 inch rubber.The car is equipped with a heavier drive shaft, upgraded half shafts and a bigger flange on the differential to handle the added power. The newer version also adds larger rotors and calipers complete with other hardware which are the same as the Corvette’s. The instrument readout graphics have been changed in all units for ‘05 and there is a new dealer installed Sport Appearance Package available. This pack adds aftermarket muffling system complete with four exhaust pipes, a different spoiler, altered rocker panels, a more recessed grill, then also includes a front and rear fascia extension kit to give a ground hugging look. There were only 24 units of the GTO sold to customers without a hood scoop and 17 units that left the factory with the chrome rim option out of a total of 11,069 vehicles imported in ‘05.

There are only a few minor changes in 2006 for the GTO with a slight increase in the units sold this year and a total production of 40,808 units over the three year run.


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