Just joined. Own a 64 Pontiac GTO with a 455 and Paxton VR4. I have a lot to learn and welcome the opportunity to share with others. Dave
Printable View
Just joined. Own a 64 Pontiac GTO with a 455 and Paxton VR4. I have a lot to learn and welcome the opportunity to share with others. Dave
Hi Dave. Welcome to SCH.
Sounds like you've got a sweet ride. Post some photos if you can.
Quote:
Originally Posted by Michael
x2 Sounds awesome.
Welcome.
Nice, pictures please
Here are a couple photos. The general exterior photo of the car was professionally done. Makes it look much nicer than it actually is. I just took the under hood photo. Only getting one or two lbs. of boost. Next step is to change pulley diameters and widths. Dave
WOW!!! That is one sweet ride! Very nice indeed.
One or two psi from a Paxton SN? The standard SN is capable of 5-5.5psi, so a new set of pulleys definitely sounds like a very good idea.
It's worse than that. It's a VR4. I'm told that it's a problem with a combination of too many cubes (455) and high flow heads (Edelbrock). We will see what happens when I get the pulleys, and the weather improves.
Not entirley, I have a 454 with big heads/cam and headers no cats and I got as much as 8 psi.Quote:
Originally Posted by 455indian
But I used 10 rib pulleys to prevent beltslip and a 3.5 inch blowerpulley, but be aware not to overspin the unit or it will fail.
How large a crank pulley did you use?
Crank Dia.
-----------
Blower Dia. x RPM x 4.44=Impeller Speed
Keep the impeller speed below 45000 rpm.
I use a 7.8 " crank pulley:
http://www.superchargersonline.com/product_detail.asp?PartNumber=V4MA018-061
Crank Dia.
-----------
Blower Dia. x RPM x 4.44=Impeller Speed
Keep the impeller speed below 45000 rpm.
I use a 7.8 " crank pulley:
http://www.superchargersonline.com/p...er=V4MA018-061