383 Cam?
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From: oxford, Michigan
383 Cam? 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?
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.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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From: oxford, Michigan
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?
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?
Last edited by 1BADAIR; Jan 11, 2009 at 01:39 PM.
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.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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From: oxford, Michigan
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
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.
Last edited by david vericker; Jan 11, 2009 at 11:42 PM.
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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
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From: oxford, Michigan
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
my car has a faceplated trans and spool so driveability isn't a huge concern
Last edited by 1BADAIR; Jan 12, 2009 at 09:03 AM.
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.
That is the cam I am running, but it just seems I am leaving something on the table. I will probably recam in the summer.