help with cam please
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 768
Likes: 25
From: Cape Cod
help with cam please
I am hoping a few pros will chime in, i am think in putting this cam in the vette, want to make as much power as possible.
we have added meth injection
Cam recommendation: 1998 Corvette with forged 402 short block, 72cc AFR 225 heads, .051" gasket, FAST 90 intake, 90mm TB, 6 speed manual, 3.42 gear, 1 7/8" headers, Intercooled procharger D1SC running 16-18psi, 6400 rpm shift points, 6800 rev limiter.
234/242 .612”/.615” 115LSA +4 advance (with 1.7 ratio rockers)
Comp LXL/LXL lobes 54-000-11 3 bolt cam core
13160R/13162R HR115LSA +4 advance (111 installed intake centerline)
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 286 234 155 13160R LXL lobe .609"
Exhaust Duration - ED 294 242 162 13162R LXL lobe .615"
Lobe Center Angle - LSA 115 115 115
Intake Centerline - ICL 111 111 111
Intake Valve opens - IVO 32 6 -33.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC 74 48 8.5 ABDC
Exhaust Valve Opens - EVO 86 60 20 BBDC
Exhaust Valve Closes - EVC 28 2 -38 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 119 119 119
Overlap 60 8 -71.5 degrees
we have added meth injection
Cam recommendation: 1998 Corvette with forged 402 short block, 72cc AFR 225 heads, .051" gasket, FAST 90 intake, 90mm TB, 6 speed manual, 3.42 gear, 1 7/8" headers, Intercooled procharger D1SC running 16-18psi, 6400 rpm shift points, 6800 rev limiter.
234/242 .612”/.615” 115LSA +4 advance (with 1.7 ratio rockers)
Comp LXL/LXL lobes 54-000-11 3 bolt cam core
13160R/13162R HR115LSA +4 advance (111 installed intake centerline)
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 286 234 155 13160R LXL lobe .609"
Exhaust Duration - ED 294 242 162 13162R LXL lobe .615"
Lobe Center Angle - LSA 115 115 115
Intake Centerline - ICL 111 111 111
Intake Valve opens - IVO 32 6 -33.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC 74 48 8.5 ABDC
Exhaust Valve Opens - EVO 86 60 20 BBDC
Exhaust Valve Closes - EVC 28 2 -38 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 119 119 119
Overlap 60 8 -71.5 degrees
Last edited by leo12; Dec 2, 2013 at 03:54 PM. Reason: speling
Melting Slicks
Joined: Feb 2006
Posts: 2,163
Likes: 5
From: Houston
What's the static comp come out to? I think you are going to want to bump the shift point a little bit. Not sure why you'd be after the most power possible on a cam swap for a FI street car. It's not going to drive like stock no matter what anyone tells you. Must easier to run a little more boost.
Huge cam with not too much overlap will make power, but it's going to want LOTS of meth because of the higher dynamic compression.
Huge cam with not too much overlap will make power, but it's going to want LOTS of meth because of the higher dynamic compression.
Instructor
Joined: May 2013
Posts: 114
Likes: 45
If I remember correctly you static compression is low.I would raise that,then run a 236lsl/242lxl on 116. Get static as close as possible to 10.5-1.
Last d1 402 we did made 840hp/750tq with that combo, LS2 intake.
Last d1 402 we did made 840hp/750tq with that combo, LS2 intake.
Safety Car
Joined: Mar 1999
Posts: 3,603
Likes: 170
From: Toronto, Canada
I have a very similar combo:
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Whats your definition of low? Given his combo, I wouldn't go any higher than 9.5 or 10 : 1 on the static. 10.5 :1 isn't outrageous but its definitely at the point where at 16-18 psi boost, he would have to inject a bunch of meth to keep things under control. For the amount of power gained unless the car is a dedicated race car, it's not worth it to jack the compression up that high.
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ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Former Vendor
Joined: Sep 2013
Posts: 187
Likes: 2
From: Mount Airy North Carolina
ISIS SUCKS FAT CHOAD
Joined: Oct 2008
Posts: 8,124
Likes: 53
From: Earth, United States
Thread Starter
Burning Brakes
Joined: Nov 2006
Posts: 768
Likes: 25
From: Cape Cod
I have a very similar combo:
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
AKA "The CLOWN"
Joined: Feb 2010
Posts: 6,261
Likes: 13
From: Chicago South Suburbs
I have a very similar combo:
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
402ci
AFR 225 heads
1 7/8 headers
Novi 2000
With a 234/240 114 I made over 900+ rwhp. This cam was ground on xer lobes that many don't recommend, but it seems to be working okay. I think your choice of cam is great and will work well...limiting factor will be the d1.
Manual or Auto? What pulley was on the Novi 2k?
Instructor
Joined: May 2013
Posts: 114
Likes: 45
Whats your definition of low? Given his combo, I wouldn't go any higher than 9.5 or 10 : 1 on the static. 10.5 :1 isn't outrageous but its definitely at the point where at 16-18 psi boost, he would have to inject a bunch of meth to keep things under control. For the amount of power gained unless the car is a dedicated race car, it's not worth it to jack the compression up that high.
I just find it funny that the OP lives near our shop, uses our shop, know we only build LS cars and still doesn't ask us.
Guess who we are? LOL
Former Vendor
Joined: Sep 2013
Posts: 187
Likes: 2
From: Mount Airy North Carolina
Here is a cam I did for a D1SC blower motor. LS3 motor, but still utilizes a D1SC.
Granted it was the stock camshaft. It's seems hard for some to add a cam and not lose any power to the stock camshaft down low. This one does not. Most all of my cams do not unless they are very large and don't have optimum compression.
Graph with air fuel and timing was kept the same for the runs with new cam and stock cam.
Granted it was the stock camshaft. It's seems hard for some to add a cam and not lose any power to the stock camshaft down low. This one does not. Most all of my cams do not unless they are very large and don't have optimum compression.
Graph with air fuel and timing was kept the same for the runs with new cam and stock cam.
