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  #1  
Old 08-27-2020, 01:53 PM
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Default 177 Supercharger on a 400 Pontiac
On a mild built street/strip 400 Pontiac, would a 177 be big enough or would it need atleast a 6-71?

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1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1980 Formula 350 Pontiac back burner project
1972 LeMans 350 Pontiac
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  #2  
Old 08-27-2020, 03:00 PM
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How fast you want to go?



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Old 08-30-2020, 09:42 AM
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With a 30 over 455 I’ve went 9.40’s with a 177 on only 3-4 lbs of boost in a 2,800 lb car. Aluminum heads with a roller cam. Could only get 3-4 lbs of boost out of the 177. On steel heads and a smallish hydraulic cam aNd the same 455 I could get 6-9 lbs of boost. I also went 9 teens with a 250 blower.



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Old 08-30-2020, 11:19 PM
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George, what intake did you use to attach that 177 blower to?

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Johnny US Army Retired
1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1980 Formula 350 Pontiac back burner project
1972 LeMans 350 Pontiac
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Old 09-01-2020, 10:46 AM
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George, what intake did you use to attach that 177 blower to?
The first 177 I bought was a universal set up, it actually bolted to the single four barrel intake. The 250 I had I used a BDS blower intake, the 177 on my wife’s TA I also used a BDS blower intake so I could squeeze it under its hood. I’ll try to get pics later.



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Old 09-07-2020, 01:02 AM
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The first 177 I bought was a universal set up, it actually bolted to the single four barrel intake. The 250 I had I used a BDS blower intake, the 177 on my wife’s TA I also used a BDS blower intake so I could squeeze it under its hood. I’ll try to get pics later.



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Do they still sell the one's that bolt to the intake?

GT.

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Old 09-07-2020, 08:40 AM
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Do they still sell the one's that bolt to the intake?

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No, it would be nice. The downside was it put the blower up a bit high, using a bds intake I squeezed it under my wife’s TA hood.......thanks to the Dude Scoop!


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Old 09-12-2020, 01:23 AM
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No, it would be nice. The downside was it put the blower up a bit high, using a bds intake I squeezed it under my wife’s TA hood.......thanks to the Dude Scoop!


GTO George
Did you have to make your own adapter?

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Johnny US Army Retired
1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1980 Formula 350 Pontiac back burner project
1972 LeMans 350 Pontiac
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  #9  
Old 09-12-2020, 07:14 AM
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Did you have to make your own adapter?
Yes I did, I used a 5/8” (over kill) piece of a aluminum.


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