| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#61
12-13-2009, 09:20 PM
|
||||
|
||||
Update!
All is well.....no changes whatsoever....running cool all summer!
Joe
__________________
1966 GTO Conv't, 4-speed, Tri-Power(sold) 1967 GTO Ram Air, PHS Doc. 4sp, #'s match, 15+ options 1 of 751 (Featured on Cover plus 6 page spread in May 2006 HPP) 1970 GTO Judge, PHS Doc. 4sp, #'s match, Ram Air III 2006 GTO Spice Red. M6,18" wheels, 400 HP LS2 richmondcountypontiac.com Need High Quality Printing fast and reasonable? www.farbetterprinting.com Since 1974 Quotes at: sales@farbetterprinting.com |
|
#62
01-06-2010, 10:43 PM
|
||||
|
||||
|
Bump!
__________________
1966 GTO Conv't, 4-speed, Tri-Power(sold) 1967 GTO Ram Air, PHS Doc. 4sp, #'s match, 15+ options 1 of 751 (Featured on Cover plus 6 page spread in May 2006 HPP) 1970 GTO Judge, PHS Doc. 4sp, #'s match, Ram Air III 2006 GTO Spice Red. M6,18" wheels, 400 HP LS2 richmondcountypontiac.com Need High Quality Printing fast and reasonable? www.farbetterprinting.com Since 1974 Quotes at: sales@farbetterprinting.com |
|
#63
02-23-2010, 11:06 PM
|
||||
|
||||
|
Joe,
After reading over this post, I'm inclined to ask if you feel the same 5.5" and 7.25" pulley set up would work on the later model 11 bolt pump set-up? |
|
#64
02-24-2010, 09:27 PM
|
||||
|
||||
|
Anyone???
|
|
#65
02-24-2010, 10:00 PM
|
||||
|
||||
|
Since I have never seen an advantage either way between the 8 bolt and 11 bolt pumps, I would say that pulley ratios will have the same effect with either pump. I've found that my engines prefer the 8" bottom and 6.5" top pulleys, and that gives us an overdriven ratio of 23%. Using a 7.25 bottom pulley and a 5.5" top pulley gives us an overdriven ratio of 32%. This ratio should provide even better cooling at low engine speeds. Only thing you have to watch out for is the actual water pump speed. If I shift at 6,000 RPM with my 8/6.5 setup my water pump will be turning about 7,400 RPM; but with the 7.25/5.5 setup the speed will be 8,000 RPM. The clutch fan should be free wheeling after 4,600 RPM shaft speed so except for extra stress on the clutch bearings, it shouldn't make that much of a difference to the fan. If you never hold your shifts, then the extra ratio doesn't even need to be considered. All that for - yea, the pulleys should work great.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
|
#66
02-24-2010, 10:55 PM
|
||||
|
||||
|
So where exactly could one find a 7.25" bottom pulley and a 5.5" top pulley for an 11bolt water pump?
__________________
The Firebird, GTO & LeMans are gone...the garage is now occupied by 2005 Porsche 997 C2S and more guitars in the house... |
|
#67
02-24-2010, 11:13 PM
|
||||
|
||||
|
Quote:
__________________
'68 GTO 4-spd Hardtop (11) '68 GTO Convertible AT (1) '70 LeMans Sport Land of Lakes Muscle Car Classic Facebook Event Facebook Wall (Kurt Smith,Minneapolis) |
|
#68
08-01-2011, 08:28 PM
|
||||
|
||||
|
Still Running Cool
As of today the pulley has done wonders! No issues at all. Just a complete pleasure!
Thanks to Nunzi.
__________________
1966 GTO Conv't, 4-speed, Tri-Power(sold) 1967 GTO Ram Air, PHS Doc. 4sp, #'s match, 15+ options 1 of 751 (Featured on Cover plus 6 page spread in May 2006 HPP) 1970 GTO Judge, PHS Doc. 4sp, #'s match, Ram Air III 2006 GTO Spice Red. M6,18" wheels, 400 HP LS2 richmondcountypontiac.com Need High Quality Printing fast and reasonable? www.farbetterprinting.com Since 1974 Quotes at: sales@farbetterprinting.com |
| Reply |
|
|
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.
Linear Mode
