FI Cam Advice/opinions
Thread Starter
Teching In
Joined: Apr 2008
Posts: 32
Likes: 0
FI Cam Advice/opinions I need your opinions/advice for a cam that’s going in my 57Chevy project.
Engine specs:
Procharger F1A (maybe an R) w/ intercooler
6.0 block
4” stroke
Wiesco –20 cc pistons
Livernois Stage 3 L-92 heads
GMPP single plane carb intake
Blow through Carb
? converter
TH 400 with trans brake
9” with 3.73 gears
~28” tall tires
This is the cam Comp Cams recommended for my motor.
GROSS VALVE LIFT .586 .596
DURATION @ .006
TAPPET LIFT 291 303
VALVE TIMING OPEN CLOSE
@ .050 INT 7 51
EXH 61 9
SPECS FOR CAM INST. @ 112.0 CENTERLINE
INT EXH
DURATION @ .050 238.00 250.00
LOBE LIFT .345 .351
LOBE SEPARATION 114.0 FIRING ORDER LS1
Thanks in advance,
Jason
Engine specs:
Procharger F1A (maybe an R) w/ intercooler
6.0 block
4” stroke
Wiesco –20 cc pistons
Livernois Stage 3 L-92 heads
GMPP single plane carb intake
Blow through Carb
? converter
TH 400 with trans brake
9” with 3.73 gears
~28” tall tires
This is the cam Comp Cams recommended for my motor.
GROSS VALVE LIFT .586 .596
DURATION @ .006
TAPPET LIFT 291 303
VALVE TIMING OPEN CLOSE
@ .050 INT 7 51
EXH 61 9
SPECS FOR CAM INST. @ 112.0 CENTERLINE
INT EXH
DURATION @ .050 238.00 250.00
LOBE LIFT .345 .351
LOBE SEPARATION 114.0 FIRING ORDER LS1
Thanks in advance,
Jason
Joined: Jun 2004
Posts: 1,501
Likes: 7
From: Ft. Irwin, California (But Virginia is home)
Using a DCR calculator (you can find this in the internal section), you want a cam with zero overlap for turbo applications......to keep from blowing the forced intake charge out the exhaust. The 114LSA is decent and the #'s look doable.
I ran a CC228 w/ .588 lift on a 115LSA when I had the STS installed. Cam worked wonderfully in this application.
Anyhow, just my $0.02.
BTW, my CC228 cam is currently for sale in the Parts section, but I used it on a stock 346 bottom end. For a 6.0 I'd probably go for a little more duration and lift.
Good luck in your search.
I ran a CC228 w/ .588 lift on a 115LSA when I had the STS installed. Cam worked wonderfully in this application.
Anyhow, just my $0.02.
BTW, my CC228 cam is currently for sale in the Parts section, but I used it on a stock 346 bottom end. For a 6.0 I'd probably go for a little more duration and lift.
Good luck in your search.
Thread Starter
Teching In
Joined: Apr 2008
Posts: 32
Likes: 0
Thanks Schantin,
I was thinking that this one would work out OK, because of the extra lift/duration on the exhaust, I didn't think about bleeding off cylinder pressure. Also, I was expecting a little more lift on both sides.
I was really hoping some one on here was running a similar cam.
I was thinking that this one would work out OK, because of the extra lift/duration on the exhaust, I didn't think about bleeding off cylinder pressure. Also, I was expecting a little more lift on both sides.
I was really hoping some one on here was running a similar cam.
