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Showing results 1 to 25 of 104
Search took 0.01 seconds. Search: Posts Made By: John Witzke
Forum: Pontiac - Street 07-02-2005, 05:51 AM
Replies: 8
Views: 343
Posted By John Witzke
As info, starting in 1975, Pontiac reportedly...

As info, starting in 1975, Pontiac reportedly removed material from its engine blocks in order to make them lighter resulting in potentially weaker blocks as compared to the earlier blocks. In...
Forum: 77-81 Firebird & Trans Am TECH 06-21-2005, 06:17 AM
Replies: 6
Views: 370
Posted By John Witzke
Michelle, Code Z49 Canada Base Equipment,...

Michelle,

Code Z49 Canada Base Equipment, means your car was built for the Canadian market. For example, the main numbers on your speedometer will be in Kilometers vs MPH for US cars.

Hope...
Forum: 77-81 Firebird & Trans Am TECH 06-06-2005, 05:23 PM
Replies: 14
Views: 1,486
Posted By John Witzke
Philo, my information comes from actual Pontiac...

Philo, my information comes from actual Pontiac Motor Division sources.

Brian, Pontiac has problems with the cars produced at the Van Nuys, CA assembly plant due to water base enamel paint. All...
Forum: 77-81 Firebird & Trans Am TECH 06-05-2005, 02:39 PM
Replies: 14
Views: 1,486
Posted By John Witzke
Philo, I believe you meant K = 403-cid engine. ...

Philo, I believe you meant K = 403-cid engine.

Paint code 50 is Solar Gold and a regular 1979 Firebird color for the 1979 model year.

Hope this helps
Forum: 77-81 Firebird & Trans Am TECH 05-29-2005, 07:04 AM
Replies: 6
Views: 254
Posted By John Witzke
Vidguy, Thanks, There is a lot of inaccurate...

Vidguy,

Thanks, There is a lot of inaccurate information about these engines, so I have tried to simplify some of the W72 information I have (highlight the major parts) in to an easy to understand...
Forum: 77-81 Firebird & Trans Am TECH 05-29-2005, 06:54 AM
Replies: 8
Views: 177
Posted By John Witzke
DeWayne, Out of the 187,285 Firebirds (all...

DeWayne, Out of the 187,285 Firebirds (all models) produced during the 1978 model year, 153,147 came with UPC code C60 air conditioning or approx 81.8%. Theoretically if you take 18.2% evenly for...
Forum: 77-81 Firebird & Trans Am TECH 05-18-2005, 05:54 PM
Replies: 369
Views: 33,287
Posted By John Witzke
Formula W72 production for 1977 was 2,491 units,...

Formula W72 production for 1977 was 2,491 units, 1,735 4-speeds as already mentioned and 756 automatics.
Forum: 77-81 Firebird & Trans Am TECH 05-15-2005, 04:59 AM
Replies: 7
Views: 163
Posted By John Witzke
For unknown reasons Pontiac used the earlier...

For unknown reasons Pontiac used the earlier style 400-cid blocks for the last run of the W72 engines. I do not think these were leftover earlier blocks from early 1975 as Pontiac produced 43,579...
Forum: 77-81 Firebird & Trans Am TECH 05-08-2005, 05:11 AM
Replies: 10
Views: 287
Posted By John Witzke
Colin, Sorry no special factory produced Formulas...

Colin, Sorry no special factory produced Formulas called a "Hurst Formula" during 1977-78 model year. Hurst t-tops were a Firebird option during the 1977-78 model year.

Hope this helps

John
Forum: 77-81 Firebird & Trans Am TECH 05-08-2005, 05:04 AM
Replies: 19
Views: 604
Posted By John Witzke
For the 1979 model year. Through June 1979...

For the 1979 model year. Through June 1979 Pontiac production records show 19,902 Firebirds with U75 power antenna mounted on the front driver-side fender.

Hope this helps

John
Forum: 77-81 Firebird & Trans Am TECH 05-08-2005, 05:00 AM
Replies: 3
Views: 255
Posted By John Witzke
It is very hard to determine a value without...

It is very hard to determine a value without seeing the car. Several factors are taken into consideration to establish a value for this car (or any car) such as numbers matching, exterior and...
Forum: 77-81 Firebird & Trans Am TECH 05-07-2005, 09:55 PM
Replies: 6
Views: 254
Posted By John Witzke
The answer can be found www.78ta.com/w72.htm...

The answer can be found www.78ta.com/w72.htm (http://www.78ta.com/w72.htm)
You can also email me an I will go into even more indepth detail
Forum: 77-81 Firebird & Trans Am TECH 05-05-2005, 06:17 PM
Replies: 3
Views: 271
Posted By John Witzke
The left and right inlet area of the 1977 shaker...

The left and right inlet area of the 1977 shaker scoop in question was originally painted a semi-flat black divided by a body color center area. In fact all 1977-81 shaker scoops were painted this...
Forum: 77-81 Firebird & Trans Am TECH 03-17-2005, 06:44 PM
Replies: 10
Views: 271
Posted By John Witzke
It sounds as if this car was sent to Pontiac zone...

It sounds as if this car was sent to Pontiac zone office for use by Pontiac employees as company car. It appears the car was drop shipped at the Pontiac zone in Dallas TX instead of the original...
Forum: 77-81 Firebird & Trans Am TECH 03-12-2005, 10:12 PM
Replies: 4
Views: 475
Posted By John Witzke
The correct shaker scoop decal should be T/A 6.6...

The correct shaker scoop decal should be T/A 6.6 for the L78/W72 engine. While 1979 Pontiac memos list the 400-cid as L78 it was a W72. Just like 1977 & 78, all 1979 Firebird 400-cid factory build...
Forum: 77-81 Firebird & Trans Am TECH 02-22-2005, 08:36 PM
Replies: 4
Views: 248
Posted By John Witzke
For Pontiac cars the service manual is a good...

For Pontiac cars the service manual is a good source for numbers and their applications.
Forum: 77-81 Firebird & Trans Am TECH 02-22-2005, 08:33 PM
Replies: 8
Views: 576
Posted By John Witzke
Carb # 17058264 was used on the 1978 base L78 400...

Carb # 17058264 was used on the 1978 base L78 400 engine for the B series (Bonneville,Catalina) models.

Hope this helps

John
Forum: 77-81 Firebird & Trans Am TECH 02-18-2005, 06:44 PM
Replies: 8
Views: 576
Posted By John Witzke
Hope this helps 1978 Block Code WC 4-speed ...

Hope this helps

1978 Block Code WC 4-speed
Carburetor – part # 17058263
Primary Jets - #70 part # 7031970
Primary Metering Rods – part # 17051340 stamped 40K
Secondary metering rods –...
Forum: Pontiac - Street 02-09-2005, 06:38 PM
Replies: 17
Views: 210
Posted By John Witzke
Dave, per factory build documents there were no...

Dave, per factory build documents there were no factory produced 1979 W72 Firebirds with automatic transmissions, all were 4-speeds.

Lobe lift on the 1978-79 W72 camshaft is approx .385" at the...
Forum: Pontiac - Street 02-08-2005, 08:04 PM
Replies: 17
Views: 210
Posted By John Witzke
You might also try this W72 website ...

You might also try this W72 website

www.78ta.com/w72.htm (http://www.78ta.com/w72.htm)

John
Forum: Pontiac - Street 01-29-2005, 06:59 AM
Replies: 31
Views: 678
Posted By John Witzke
Pontiacguiy, sometimes mistakes can happen at the...

Pontiacguiy, sometimes mistakes can happen at the factory, however, they are rare and should not be considered correct or how Pontiac actually intended the cars to be built. My post about correct...
Forum: Pontiac - Street 01-26-2005, 05:28 AM
Replies: 31
Views: 678
Posted By John Witzke
As info all 1977 W72, 1978 W72 automatics and...

As info all 1977 W72, 1978 W72 automatics and 1979 W72 (4-speed only) Firebirds came from the factory with 3.23:1 gears. The 1978 W72 4-speed cars came with 3.42:1 gears.

The only 1978 shaker to...
Forum: Pontiac - Street 01-25-2005, 05:31 PM
Replies: 31
Views: 678
Posted By John Witzke
Play 400 & 69GTO1 Please reference my W72 page,...

Play 400 & 69GTO1 Please reference my W72 page, Cotton has posted the link. This link gives an overview of the option with accurate information. If you need more in-depth information regarding the...
Forum: 77-81 Firebird & Trans Am TECH 01-12-2005, 09:32 AM
Replies: 7
Views: 252
Posted By John Witzke
Pontiac production records I have show all 1978...

Pontiac production records I have show all 1978 Y88 gold special edition Trans Ams came with T-Tops. You could get a base model Trans Am with paint code 50. The build sheet would have the UPC Y88...
Forum: 77-81 Firebird & Trans Am TECH 01-09-2005, 06:10 AM
Replies: 15
Views: 346
Posted By John Witzke
Larry, the letter "N" in the partial VIN...

Larry, the letter "N" in the partial VIN indicates the car this engine originally came with was produced at the Norwood OH assembly plant. Had the letter be an "L" then the car would have been built...
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