LT4 383 Cam selection - sim results
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,007
From: Texas
Jim, run your sim using a 224/236 on a 112 or even a 113. I recently used that cam with high lift lobes in a 350 LT1. The combo was AFR 195 LT4 Comp Ported Eliminator heads, Crane Gold race 1.6 rocker arms, Edelbrock LT4 intake ported to match, Long tube headers by Hooker/Jet Hot and a CAT LESS exhaust. I was amazed that the combo yielded 400+ on my dyno, in a 1995 F body with a M6 transmission. Drivability was excellent, it had a lopey idle at 800, no noticable cam surge anywhere.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Careful w/ your cam choice.
People always talk about cam lope, or idle. They never seem to discuss exhaust smell at idle w/ a higher duration cam.
I have a 93 LT1 6spd w/ the hotcam. I have LT headers w/heated O2 sensors. I do not run cats on my setup. I have had a custom tune by both Ed Wright and Alv!n. The smell at idle is absolutely terrible. It 'smokes' you out of the car and makes you not want to drive it. The smell sticks on your clothes and lets people know you've been driving the corvette.
I am also not a very smell sensitive person. Its just that bad.
Maybe its bc I have speed density based system, and the MAF systems better tolerate mods.
Ive been round and round on here trying to figure out why my car stinks so bad. Nothing.
So theres more to consider then lope or smooth idle in a cam choice.
People always talk about cam lope, or idle. They never seem to discuss exhaust smell at idle w/ a higher duration cam.
I have a 93 LT1 6spd w/ the hotcam. I have LT headers w/heated O2 sensors. I do not run cats on my setup. I have had a custom tune by both Ed Wright and Alv!n. The smell at idle is absolutely terrible. It 'smokes' you out of the car and makes you not want to drive it. The smell sticks on your clothes and lets people know you've been driving the corvette.
I am also not a very smell sensitive person. Its just that bad.
Maybe its bc I have speed density based system, and the MAF systems better tolerate mods.
Ive been round and round on here trying to figure out why my car stinks so bad. Nothing.
So theres more to consider then lope or smooth idle in a cam choice.
Here is a video of it idling:
