With the 3.73s I rev just about 3200 rpm at 65 mph. That's with 245 60 14 tires. A diameter of 25.57 in. I'm glad I'm using synthetic oil in the 327. Now the 4.56s with a 5 speed... The "rev calculators" on the web are a real good thing!
Chuck '65 Malibu - 327 4 speed vin wrote: > if small block you will be rev. high with 4.56 track use mostly would > work better with a big block------3.73 are a good all around gear--- I > have 3.90 in my small block---at 60 r.p.m.s are 3500 > ----- Original Message ----- From: "J. Brady" <[EMAIL PROTECTED]> > To: "Chevelle Group" <[email protected]> > Sent: Monday, November 28, 2005 4:24 PM > Subject: [Chevelle-list] 3.73 or 4.56? > > >> OK folks, >> >> I have the opportunity to use 3.73 or 4.56 gears in >> the 10-bolt posi I'm going to put in the '66. The car >> has a 300+/-HP 327 and PG. Anyone have any thoughts >> or previous experience with the 4.56 gears and the >> PG/small block setup? >> >> I drive the car to local shows, and want to be able to >> take it to Cecil on occasion. A relative told me to >> do the 4.56s and nothing less, thus my indecision. >> >> Thanks, >> >> Jim >> > >
