Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here.

          
Reply
 
Thread Tools Display Modes
  #1  
Old 09-11-2023, 12:04 PM
performerrpm's Avatar
performerrpm performerrpm is offline
Ultimate Warrior
 
Join Date: Jul 2007
Location: oklahoma
Posts: 1,936
Send a message via AIM to performerrpm
Default hiding a 871 under the hood ...65 gto

i coukd have swore i seen a youtube vid of a guy with an 871 under his gto hood...cant find it...anyone tried to get one to fit under a 65 with 4inch cowl..?

  #2  
Old 09-11-2023, 01:40 PM
misterp266's Avatar
misterp266 misterp266 is offline
Ultimate Warrior
 
Join Date: Jun 2005
Location: Raynham, MA
Posts: 1,761
Default

ďAinít no wayĒ

Aretha Franklin

__________________
" Darksiders Rule "
The Following 2 Users Say Thank You to misterp266 For This Useful Post:
  #3  
Old 09-11-2023, 02:02 PM
tom s tom s is offline
Ultimate Warrior
 
Join Date: Jan 2000
Location: long beach ca usa
Posts: 18,536
Default

Maybe a 653.Tom

  #4  
Old 09-11-2023, 09:07 PM
performerrpm's Avatar
performerrpm performerrpm is offline
Ultimate Warrior
 
Join Date: Jul 2007
Location: oklahoma
Posts: 1,936
Send a message via AIM to performerrpm
Default

i set it all up this evening, even without the carb adapters my 4" hood just aint enough

  #5  
Old 09-11-2023, 11:53 PM
Jack Gifford's Avatar
Jack Gifford Jack Gifford is offline
formerly 'Pontiac Jack'
 
Join Date: Dec 2004
Location: Phelps, NY 14532
Posts: 10,129
Default

What about electronic injection with custom low-rise throttle bodies?

__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons?
... or has built a record breaking DOHC hemi four cylinder Pontiac?
... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967)
  #6  
Old 09-12-2023, 12:09 AM
Stuart's Avatar
Stuart Stuart is offline
Moderator
 
Join Date: Apr 2003
Location: Minneapolis
Posts: 7,791
Default

Maybe some side draft carbs, like a Latham setup?


  #7  
Old 09-12-2023, 12:33 AM
242177P's Avatar
242177P 242177P is offline
Ultimate Warrior
 
Join Date: Oct 2004
Location: Vancouver, BC
Posts: 1,617
Default

Quote:
Originally Posted by Stuart View Post
Maybe some side draft carbs, like a Latham setup?

https://www.youtube.com/watch?v=R2-07ZzhQWA

  #8  
Old 09-12-2023, 01:16 AM
Sirrotica's Avatar
Sirrotica Sirrotica is offline
Ultimate Warrior
 
Join Date: Jan 2005
Location: Catawba Ohio
Posts: 7,094
Default

There's this X 400 showcar built to fit under the hood of a 63 GP. It would be a challenge to use 4 sidedraft carbs on a custom built intake to fit the top of a GMC blower. The throttle linkage would be a challenge for sure, but it fits under the stock hood. I believe that blower is a 671, but the snout could be shorter to fit an 871. Notice 7, V belts to drive the blower instead of a cogged belt.



If you wanted a blower under the hood, and were willing to use a Magnuson, or Whipple style blower, and went with electronic FI, it shrinks the package down considerably. This is a 2004-06 late model LS GTO with a Magnuson blower that fits easily under a stock hood. it's not an 871, but it's in a package that is much easier to fit under a stock hood.



I didn't find any 65 GTOs with a 871 blower under even a 4 inch bubbled hood when I searched the net. That big chunk of aluminum is going to be difficult to disguise under most any hood after the late 50s cars. I've seen 55-57 chevys with a blower under the hood, but the hood is quite a bit higher than a GTO hood.

__________________
Brad Yost
1973 T/A (SOLD)
2005 GTO
1984 Grand Prix

100% Pontiacs in my driveway!!! What's in your driveway?

If you don't take some of the RACETRACK home with you, Ya got cheated

  #9  
Old 09-12-2023, 01:59 AM
b-man's Avatar
b-man b-man is offline
Moderator
 
Join Date: Sep 2002
Location: Sunny So Cal
Posts: 16,149
Default

Put a flat hood on your car and cut a big hole in it.

Show your 8-71 to the world, that’s the right way.

__________________
1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/2.56
2002 WS6 Convertible LS1/4L60E/3.23
  #10  
Old 09-12-2023, 10:33 AM
tom s tom s is offline
Ultimate Warrior
 
Join Date: Jan 2000
Location: long beach ca usa
Posts: 18,536
Default

Wait for someone to make a pontiac screwtype blower system!Tom

  #11  
Old 09-14-2023, 09:48 AM
i82much's Avatar
i82much i82much is offline
Ultimate Warrior
 
Join Date: Dec 2005
Posts: 2,684
Default

Quote:
Originally Posted by b-man View Post
Put a flat hood on your car and cut a big hole in it.

Show your 8-71 to the world, thatís the right way.
is there a way to safely drive in the rain if you do that?

  #12  
Old 09-14-2023, 10:46 AM
b-man's Avatar
b-man b-man is offline
Moderator
 
Join Date: Sep 2002
Location: Sunny So Cal
Posts: 16,149
Default

My hobby cars are all used in fair weather, none get driven in the rain whether or not there’s a blower sticking out of the hood.

That’s what my late model modern cars are for, I’d rather one of those get in an accident on a slick road than one of my old cars I have invested a lot of time and money.

There are guys who drive old hot rods in every kind of weather with the engine completely exposed so it’s not like you can’t drive in the rain. So as long as you don’t mind the cleaning afterwards have at it.

There are dozens of ways to add boost that will package nicely under the hood but a GMC 8-71 roots blower really isn’t one of them. They’re traditionally exposed through a hole in the hood, pretty much meant for displaying as it should be.

__________________
1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/2.56
2002 WS6 Convertible LS1/4L60E/3.23
  #13  
Old 09-14-2023, 03:40 PM
misterp266's Avatar
misterp266 misterp266 is offline
Ultimate Warrior
 
Join Date: Jun 2005
Location: Raynham, MA
Posts: 1,761
Default

Quote:
Originally Posted by b-man View Post
Put a flat hood on your car and cut a big hole in it.

Show your 8-71 to the world, that’s the right way.
This. ^ ^ ^ !

One of the reasons to run a roots blower is the awesome look!
Don’t hide it!

i82much; is there a way to safely drive in the rain if you do that?


Take the cheater slicks off and stay out of the throttle!

__________________
" Darksiders Rule "
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:52 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017