Driving notes with a BIG cam: 346 & 254/260
02-07-2006, 10:21 AM
#1
Driving notes with a BIG cam: 346 & 254/260 We've been able to get the tune close(+- 3%) and boy it runs good. Everyone always asks about driveability concerns with a big cam and I have always wondered what does everyone mean. Here are some issues/notes:
- Right not my idle is set @ 975 and it hits and sticks
- Can cruise in 6th @ 1250 very with little cam surge
- On Decel idle will hang @ 1250-1300 until you come to a complete stop and idle will fall to 975
- Car pulls seamless through the RPM band no real major difference in feel, nice quick constant pull
- Idle does not dip @ lights
- Idle does not dip on braking
- only thing I would change is cat-back, car is pretty loud @ 1800, cruising @ 1300 is fine and 2000 + she screams.
- Right not my idle is set @ 975 and it hits and sticks
- Can cruise in 6th @ 1250 very with little cam surge
- On Decel idle will hang @ 1250-1300 until you come to a complete stop and idle will fall to 975
- Car pulls seamless through the RPM band no real major difference in feel, nice quick constant pull
- Idle does not dip @ lights
- Idle does not dip on braking
- only thing I would change is cat-back, car is pretty loud @ 1800, cruising @ 1300 is fine and 2000 + she screams.
02-07-2006, 11:35 AM
#3
10 Second Club
iTrader: (4)
Join Date: Sep 2004
Location: memphis
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
Hey Phil which catback do you have? Maybe you might consider a stock z06 cat back. I am cam only with headers and no cats and mine sounds almost stock at cruising speeds!!
02-07-2006, 11:49 AM
#5
Originally Posted by hc_performance
Hey Phil which catback do you have? Maybe you might consider a stock z06 cat back. I am cam only with headers and no cats and mine sounds almost stock at cruising speeds!!
LG Pro Long Tubes
3" Center section
3" Rear section with Borla XR1 mufflers.
Trending Topics
02-07-2006, 12:50 PM
#9
King of Pigskin Knowledge
iTrader: (7)
Join Date: Dec 2002
Location: Ohio
Posts: 602
Likes: 0
Received 0 Likes
on
0 Posts
People always think my car w/ the t-rex is going to drive terrible, until they ride in it. Very streetable cam. I think w/ the LS1 and tuning ability, big cam driving issues aren't a problem. As long as you can live with lope (I like it), it'll drive fine.
03-01-2006, 05:44 AM
#11
Originally Posted by Phil99vette
The tune is almost done, I want to get everything 100% done before we dyno it, still need to get the vacuum pump and nitrous done. videos are coming..
