Cam suggestions needed for .550 lift
09-12-2004, 07:51 PM
#1
Senior Member
Thread Starter
Join Date: Jun 2001
Location: Saskatchewan
Posts: 920
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Iroc
Engine: 454 Demon 850DP
Transmission: TH350, 3500 stall
Axle/Gears: 3.73
Cam suggestions needed for .550 lift
I need a cam suggestion that would be just under 550 lift with my 1.6 rockers. The engine is a 400 .030 over with flat top pistons and Fastburn heads. I have a Super Victor Vortec intake and a Demon 850DP. The car runs 12.25 @ 110mph now.
Last edited by Blackroc86; 09-12-2004 at 07:56 PM.
09-12-2004, 09:01 PM
#2
Supreme Member
Join Date: Jul 1999
Location: Saskatoon, Saskatchewan, Canada
Posts: 1,011
Likes: 0
Received 0 Likes
on
0 Posts
Car: 86 Trans Am
Engine: 406
Transmission: TH350, 4200
Axle/Gears: Moser 9", 3.89
Comp 294S - 294/294 Adv, 248/248 @ .050", .525"/.525" with 1.5s....looks like .560" lift with the 1.6s.
Valvespring limitations?
Valvespring limitations?
09-12-2004, 09:05 PM
#3
Senior Member
Thread Starter
Join Date: Jun 2001
Location: Saskatchewan
Posts: 920
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1986 Iroc
Engine: 454 Demon 850DP
Transmission: TH350, 3500 stall
Axle/Gears: 3.73
Yes limited to 550 lift unless I go for some springs good to 650 and I am considering that. Want to stay ahead of a buddy who will have his car ready next spring. 
09-12-2004, 10:05 PM
#4
Supreme Member
Join Date: Jul 1999
Location: Saskatoon, Saskatchewan, Canada
Posts: 1,011
Likes: 0
Received 0 Likes
on
0 Posts
Car: 86 Trans Am
Engine: 406
Transmission: TH350, 4200
Axle/Gears: Moser 9", 3.89
You may need bigger springs but a flat tappet cam with .600-.650" lift will have tons of duration and will probably push your power band above where your bottom end is capable of going (more than once).
I am sure some of the guys on here will have good suggestions though...
I am sure some of the guys on here will have good suggestions though...
09-13-2004, 01:30 AM
#5
Junior Member
Join Date: Dec 2002
Location: Bordentown, NJ
Posts: 61
Likes: 0
Received 0 Likes
on
0 Posts
Car: 82 Camaro Z/28
Engine: 383 SBC
Transmission: TH350
Comp 294S - 294/294 Adv, 248/248 @ .050", .525"/.525" with 1.5s....looks like .560" lift with the 1.6s.
That's the same cam I'm running. I ordered it on a small base circle for clearance on the 5.7 rods that I was going to at the same time.
Specs off the cam card at 106 intake centerline read as follows:
Gross valve lift .534
duration at .050 was 250 intake and exhaust
lobe lift .3560
lobe separation 110
part# 12-000-5
grind# CS 6014/6014 S 110.0 +4
I'm pretty satisfied with it, still got power brakes though I use a vacuum reserve can. Power band to 6500. The specs are a little different from the off the shelf part but thats what I ordered, I guessing here but probaly getting it on the small base might of had something to do with it. I even called tech back up and questioned it and he assured me I got the 294S grind on the small base.
That's the same cam I'm running. I ordered it on a small base circle for clearance on the 5.7 rods that I was going to at the same time.
Specs off the cam card at 106 intake centerline read as follows:
Gross valve lift .534
duration at .050 was 250 intake and exhaust
lobe lift .3560
lobe separation 110
part# 12-000-5
grind# CS 6014/6014 S 110.0 +4
I'm pretty satisfied with it, still got power brakes though I use a vacuum reserve can. Power band to 6500. The specs are a little different from the off the shelf part but thats what I ordered, I guessing here but probaly getting it on the small base might of had something to do with it. I even called tech back up and questioned it and he assured me I got the 294S grind on the small base.
Last edited by SS CAM; 09-13-2004 at 01:33 AM.
Thread
Thread Starter
Forum
Replies
Last Post
