Author Topic: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project  (Read 28382 times)

MalteseFalcon

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #80 on: August 01, 2020, 10:12:38 PM »
I saw you mentioned early on in your post, that the stock Pontiac 400 W72 oil sump and system won't work well with the suspension upgrades, has this got to do with the motor being starved of oil when cornering?? Man I'll really have to look into a better oiling system....

Hi Max, and thanks! About the oil pan, the W72 does have a pretty good factory oil pan - they added a baffle to it early on in the 1977 production because some owners reported lifters rattling on hard acceleration or cornering; I read that they actually did a recall on it to replace it.  Herb Adams believed that the Pontiac oil pan wasn't up to racing conditions, because a long, fast sweeping turn could result in the oil pick-up sucking air. He recommended this oil pan for autocross and a full dry sump system for road racing. A Fire Am with solid control arm bushings and the rest of the upgrades can corner at close to 1G (on 1980's tires) which is a lot more cornering force than the factory oil pan was designed for.

Also, the 180-degree headers won't fit under the engine without that oil pan!
« Last Edit: August 01, 2020, 10:25:06 PM by MalteseFalcon »
Steve

1978 WS6 - W72 4 Speed, Martinique Blue on Light Blue - Fire Am Restification Project

2000 WS6 6-Speed Trans Am, Black on Ebony

Maxthe222

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #81 on: August 01, 2020, 10:39:23 PM »
Very curious to know!!! As for the pump system, does it utilise the same 60psi pump, or does it have a higher PSI contrasted to the W72 spec one?
1979 T/A Y84 WS6
1979 F/A W72 WS6
1971 Formula 400 4-Speed

MalteseFalcon

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #82 on: August 01, 2020, 11:01:01 PM »
It's a the heavy duty 60 psi oil pump with a thick bottom plate and the heavier spring - same as the W72.  They actually just sold the HD spring, plate, and shaft to upgrade whatever pump you had.



« Last Edit: August 01, 2020, 11:03:40 PM by MalteseFalcon »
Steve

1978 WS6 - W72 4 Speed, Martinique Blue on Light Blue - Fire Am Restification Project

2000 WS6 6-Speed Trans Am, Black on Ebony

MalteseFalcon

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #83 on: August 02, 2020, 12:01:37 PM »
Here is a link to a very informative article on the Pontiac oil pump by Rocky Rotella; it explains that the difference between the 40 and the 60 psi pumps is the weight of the spring in the bypass valve, that regulates the pressure, which is why VSE could just sell the heavy duty plate, spring, and driveshaft to upgrade the standard-performance pump to the high-performance pump specifications.

https://www.pontiacv8.com/articles/2018/3/26/oilpump
Steve

1978 WS6 - W72 4 Speed, Martinique Blue on Light Blue - Fire Am Restification Project

2000 WS6 6-Speed Trans Am, Black on Ebony

Maxthe222

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #84 on: August 02, 2020, 07:06:54 PM »
Hmmmm... I'm hoping I still have it! If not I'll have to try and find one specifically out of a W72 engine. I'll look into getting the heavy duty plate, spring and driveshaft as well!
1979 T/A Y84 WS6
1979 F/A W72 WS6
1971 Formula 400 4-Speed

MalteseFalcon

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #85 on: August 02, 2020, 07:19:04 PM »
Hmmmm... I'm hoping I still have it! If not I'll have to try and find one specifically out of a W72 engine. I'll look into getting the heavy duty plate, spring and driveshaft as well!

This is one part, at least, that you can still buy new. I would not recommend using a used oil pump. And there is no need.

Edit: Here is a link to the 60 PSI pump from Butler: https://butlerperformance.com/i-31643248-melling-performance-pontiac-high-vol-60-psi-oil-pump-with-pick-up-mel-10540.html?ref=category:1234738

Ames also sells the same pump for $74:
FN756 1967-79 Standard 60 PSI Oil Pump w/Screen,
Pontiac V8 Exc. 301 and RA-IV (AP)........... $74.00/ea.
FN756G 1967-79 Oil Pump Gasket, Pontiac V8 (AP).............. 2.50/ea.
FN757 1967-79 80 PSI High Pressure Oil Pump
w/Screen, Pontiac V8 Exc. 301 (AP )........... 99.00/ea

« Last Edit: August 02, 2020, 07:37:01 PM by MalteseFalcon »
Steve

1978 WS6 - W72 4 Speed, Martinique Blue on Light Blue - Fire Am Restification Project

2000 WS6 6-Speed Trans Am, Black on Ebony

Maxthe222

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #86 on: August 02, 2020, 08:31:24 PM »
Jeez you're really doing my homework for me there Steve  :razz: :razz: :-P
1979 T/A Y84 WS6
1979 F/A W72 WS6
1971 Formula 400 4-Speed

MalteseFalcon

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Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #87 on: August 02, 2020, 09:25:46 PM »
Jeez you're really doing my homework for me there Steve  :razz: :razz: :-P

I've already done it.  :)
Steve

1978 WS6 - W72 4 Speed, Martinique Blue on Light Blue - Fire Am Restification Project

2000 WS6 6-Speed Trans Am, Black on Ebony

Re: MalteseFalcon's 1978 WS6-W72 Fire Am Restification Project
« Reply #87 on: August 02, 2020, 09:25:46 PM »
You can help support TAC!

 



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