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#1
07-30-2023, 04:39 AM
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Oil level in the engine.
If pontiac thought it was a good idea to put a total of 7 Qt in the 1966-67 V8s, using a 6 Qtr dip stick, why didn't they continue with it for 1968 and later engines?
And, yesterday when I filled the engine in my 66 GTO with a total of 6 Qts, my 6 Qts dipstick indicated "Full", which obviously indicates that the block pipe is too short. I then fabricated an extender for the block tube so that a 5 Qtr dipstick indicated "Full". 5 Qts in the tray plus 1 Qtr for the (long) filter. Should i add another Quart of oil to have "Full" on the original 6 Qtr dipstick (total of 7 Qts)? Thoughts on this? |
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#2
07-30-2023, 09:57 AM
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My 67 Catalina Sport Coupe with a 325 HP 400 needed 6 quarts to fill the pan. My 79 Trans Am needs 5 quarts. The pans are virtually identical.
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1979 Trans Am WS-6 .030 455 zero decked flat pistons 96 heads with SS valves 041 cam with Rhoads lifters 1.65 rockers RPM rods 800 Cliffs Q Jet on Holley Street Dominator ST-10 4 speed (3.42 first) w 2.73 rear gear __________________________________________________ _______________________________ 469th TFS Korat Thailand 1968-69 F-4E Muzzle 2 |
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#3
07-30-2023, 12:45 PM
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The sticks are the same with the full mark a little higher on the stick.
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#4
07-30-2023, 02:16 PM
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Drain oil and filter completely. Install new filter and exactly 6 quarts. Start for a few minutes. Let sit. Check where it is on stick and scratch a new line for full. If I’ve run hundreds of 9 second passes on 6 quarts, your street cruiser will be fine with 6 too.
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LIFT HEAVY, LIFE IS TOO SHORT TO BE SMALL! |
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#5
07-30-2023, 02:31 PM
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The engines before and after 1966-67 use 5 Qt rods but both the 5 Qt and the 1966-67 6 Qt rod say "Do not overfill".
Why was it necessary to overfill the engines with 1 Qt in 1966-67? |
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#6
07-30-2023, 03:42 PM
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Pictures, I have used these for years that’s the difference at some point they determined 5+ filter was enough. I still run 6 to the full mark.
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#7
07-30-2023, 04:45 PM
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The operators manual specified 6 quarts + 1 for the filter. The dip stick always read at the full mark after running it checking for leaks.
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1979 Trans Am WS-6 .030 455 zero decked flat pistons 96 heads with SS valves 041 cam with Rhoads lifters 1.65 rockers RPM rods 800 Cliffs Q Jet on Holley Street Dominator ST-10 4 speed (3.42 first) w 2.73 rear gear __________________________________________________ _______________________________ 469th TFS Korat Thailand 1968-69 F-4E Muzzle 2 |
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#8
07-30-2023, 07:43 PM
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Quote:
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If it breaks. I didn't want it in the first place. _____________________________________________ 69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN. |
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#9
07-30-2023, 07:50 PM
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Not an expert but I have had 4 Pontiacs and have always just put in 6 quarts and looked at dipstick. Never had an issue with oil volume, just other things LOL
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
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#10
07-30-2023, 08:18 PM
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It could be reason is that later Pontiac 400's got rid of the windage tray.
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1979 Trans Am WS-6 .030 455 zero decked flat pistons 96 heads with SS valves 041 cam with Rhoads lifters 1.65 rockers RPM rods 800 Cliffs Q Jet on Holley Street Dominator ST-10 4 speed (3.42 first) w 2.73 rear gear __________________________________________________ _______________________________ 469th TFS Korat Thailand 1968-69 F-4E Muzzle 2 |
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