whats everyone using? I currently have a 246 248 .614 .615 114 my 383 with patriot heads(62cc) and -7cc pistons so the dcr is really low.
I was suggested to use a 242 248 .621 .615 111 +2 or +4 about a year ago but never got around to switching. anything new out I should try?
A 383 will want around 6 degrees more overlap/duration to behave like a smaller 346. Look at the popular, strong running 346 combos with similar mods and street manners close to what you want, add 6 degrees and that will get you in the ballpark to get started.
__________________ 2009 Pontiac G8 GT Vararam, EFI Live tuned, Cruising in 4 cylinder mode, hauling on 8. 2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAEMods list, Idle Sound Clip, WOT video, 183.092mph video 2007 Suburban 5.3L K&N FIPK, EFI Live tuned for max power and fuel economy. 2007 Jeep Grand Cherokee SRT8 sold: 12.12@112.70mph, 150.942mph Texas Mile. LS1,LS2,LS3,LS7 Custom Camshaft Specialist For custom camshaft help press here. Custom LSX drivability & dyno tuning by appointment only.
Exactly the information I am also looking for! Keep it coming! I was considering either the MS3 Or a custom grind around 239/249/.600.609 111.5......Not sure what to go with.
Yeah but it gives up a lot of torque through out the entire power band. A cam in the 23X/24X duration will make as good or better power and better torque.
I was just playing with the DCR calc. How would a 236 242 .602 .610 111+4 work.
On the street it would probably be better but what about on the track. How about with a 150-200 shot?
would a lsk 242 .621 work better on the exhaust?
I was just playing with the DCR calc. How would a 236 242 .602 .610 111+4 work.
On the street it would probably be better but what about on the track. How about with a 150-200 shot?
would a lsk 242 .621 work better on the exhaust?
Good cam for a 383. Comparable to a 230/236 in a 346. Now you're getting cams that are more appropriately sized for excellent street/strip action. The earlier EVO you get from advancing your cam +4 will help reduce pumping losses on the spray. It will be good on a 150-200 shot.
__________________ 2009 Pontiac G8 GT Vararam, EFI Live tuned, Cruising in 4 cylinder mode, hauling on 8. 2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAEMods list, Idle Sound Clip, WOT video, 183.092mph video 2007 Suburban 5.3L K&N FIPK, EFI Live tuned for max power and fuel economy. 2007 Jeep Grand Cherokee SRT8 sold: 12.12@112.70mph, 150.942mph Texas Mile. LS1,LS2,LS3,LS7 Custom Camshaft Specialist For custom camshaft help press here. Custom LSX drivability & dyno tuning by appointment only.
do you think it would gain or lose power over the cam I have.
from what I can tell the dcr will go from 7.60 to about 8.5
btw. that 230 236 cam you posted runs great in a cam only ls2 too
241/245 .645 .633 114 +4 and direct port nitrous.The cam has good streetability and pulls hard when running NA.1.67 short = 10.57 @138.54 on spray.
__________________ 98 Vette Coupe black on black - W2W forged 383 ZEX Directport 175 shot - Cam Motion 241/245 .645 .633 114 +4 - GMPP 243 CNC 59cc heads/Comp 921 springs - FAST 78mm/modified MAS &TB/Vortex ram air/Delphi 42#injectors/255 Walbro with hot wire - SLP LT/Bassani X pipe/B&B PRT- Six Speeds Inc stage 4/Mcleod street twin and more.
Last edited by david vericker; 01-12-2009 at 12:42 AM..
Location: Was New Orleans, but swam to Baton Rouge
Posts: 1,527
Quote:
Originally Posted by AlohaC5
239/243 .612/.617 113+3
I ran that cam on a 112+4 in my Z06. It was a good cam. I now run a 244/250 .646/.612 on a 112+4. Both work really well. If I wanted to have more of a street car I would stick with the 239/243 cam.
A 383 will want around 6 degrees more overlap/duration to behave like a smaller 346. Look at the popular, strong running 346 combos with similar mods and street manners close to what you want, add 6 degrees and that will get you in the ballpark to get started.
That was the rule of thumb I used for my 383. I like 224 cam'd 346's so my 383 has a ~ 230 cam
__________________ 99 T/A TEA 5.3 S2 (very old ones), SRP-224 cam, MTI tune, LS6 intake, Hooker LT's, Mufflex Y, cut-out & SLP D/D- 4.10's -Dyno -418rwhp & 404 rwtq Arctic White 91 RS new 383 LS1 w/TEA 2.5 LS6 ready to install 72 Vette
I have no driveability issues at all with the 246 248. it seems really mild to me. I drive it about everynice day in the summer. I don't even think something like a 258 264 would bother me at all.
my car has a faceplated trans and spool so driveability isn't a huge concern
That was the rule of thumb I used for my 383. I like 224 cam'd 346's so my 383 has a ~ 230 cam
230/230 is not consider a large cam by 346 standards.I am not trying to knock your set up,however,you are leaving a lot of power on the table with such a small cam by 383 standards.If you would have went a bit larger on the duration side your power (HP/TQ) would have increased nicely with no loss of streetability.
__________________ 98 Vette Coupe black on black - W2W forged 383 ZEX Directport 175 shot - Cam Motion 241/245 .645 .633 114 +4 - GMPP 243 CNC 59cc heads/Comp 921 springs - FAST 78mm/modified MAS &TB/Vortex ram air/Delphi 42#injectors/255 Walbro with hot wire - SLP LT/Bassani X pipe/B&B PRT- Six Speeds Inc stage 4/Mcleod street twin and more.
383 Cam? 
B] Lower control arms, TQ arm, airlid, K&N filter, shift kit, Vig. 3200stall, Long Tube headers, bullet y-pipe, P&P TB w/bypass.[/b] 
