Best Heads for the LT1
Staging Lane
Joined: Mar 2007
Posts: 82
Likes: 0
From: NJ
In fact I have just ordered another LE1 Emissions cam for an LE3 equipped 383 A4 I picked up recently.
Since this definitely has to be an emissions legal setup I would go with the Lingenfelter LT1 CNC heads, 211/219 cam, Comp Cams HiTech RR's and some sort of emissions legal headers. Either that or get longtubes and do a Y-pipe with hi-flow cats depending on how strict your e-check is.
I had this setup and couldn't of been happier. I was able to put down 350rwhp/350rwtq through the stock Y-pipe with cats and Edelbrock 1 5/8" shorties. Car was a real sleeper since it had a smooth idle. Was able to run a best of 12.5 @ 110 while emissions compliant. I had the setup on the car for almost 70,000 miles without one problem.
If you're deciding on a mild cam you also may need to change up your rear ratio to possibly a 3.42. It's one of those things where you're going to have to dyno to see where your power peak is, maybe run at the track and then decide what would be the best gear to get you right at power peak when you're crossing the traps. That's, of course if you're concerned w/ 1/4mi performance. Driveability was fantastic. The power curve was phenominal. Torque band was as broad as stock, only higher.
I would say that would be a good choice as well.
I had this setup and couldn't of been happier. I was able to put down 350rwhp/350rwtq through the stock Y-pipe with cats and Edelbrock 1 5/8" shorties. Car was a real sleeper since it had a smooth idle. Was able to run a best of 12.5 @ 110 while emissions compliant. I had the setup on the car for almost 70,000 miles without one problem.
If you're deciding on a mild cam you also may need to change up your rear ratio to possibly a 3.42. It's one of those things where you're going to have to dyno to see where your power peak is, maybe run at the track and then decide what would be the best gear to get you right at power peak when you're crossing the traps. That's, of course if you're concerned w/ 1/4mi performance. Driveability was fantastic. The power curve was phenominal. Torque band was as broad as stock, only higher.
I would say that would be a good choice as well.
