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Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#1
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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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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 |
#2
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How fast you want to go?
GTO George |
#3
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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.
GTO George |
The Following User Says Thank You to GTOGEORGE For This Useful Post: | ||
#4
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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 |
#5
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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.
GTO George |
#6
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Quote:
GT. |
#7
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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 |
#8
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Did you have to make your own adapter?
__________________
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 |
#9
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Yes I did, I used a 5/8” (over kill) piece of a aluminum.
GTO George |
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