need more low end
Thread Starter
Intermediate
Joined: May 2010
Posts: 28
Likes: 1
need more low end
have 80. engine was built up form previous onwer. runs like a bear on high end. thinking of swappin rear end but dont want to get to drastic.
only put 500 mi a yr on so not concerned bout gas mi.
thanks in advance
only put 500 mi a yr on so not concerned bout gas mi.
thanks in advance
Racer
Joined: Oct 2006
Posts: 412
Likes: 1
From: St. John's Newfoundland
What gears and transmission are you using now. I am running 3.55 with a 2004r 4 gear auto in my '79. About 1800 rpms on at 100kmh/60mph. I could go to 4:10 and with the 4 speed not rev a whole lot higher on the highway, maybe 22 or 2400. I guess what i'm getting at is members would need to know what transmission, rearend, tires and maybe what cam you are using in order to give you a GOOD ANSWER.
c
c
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
I'm running 3.90's and they are great but obviously rev when on the highway without an O/D transmission. 3.55-3.70 would be a good balance ratio for a street car IMO.
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
This is probably not the advice you're looking to hear, but is something a lot of guys make mistakes with. The intended use of the car. If you're drag racing,....do the gears and converter swap. If you are street,...why not recam with something mild, and keep the gears you have? It will result in better economy, better driveability,....
Cruising
Joined: Jan 2008
Posts: 13
Likes: 0
From: Houston TX
This is probably not the advice you're looking to hear, but is something a lot of guys make mistakes with. The intended use of the car. If you're drag racing,....do the gears and converter swap. If you are street,...why not recam with something mild, and keep the gears you have? It will result in better economy, better driveability,....
