Need a bigger Cam: Big Cam 402/408's Chime in
02-16-2010, 11:17 PM
#1
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Need a bigger Cam: Big Cam 402/408's Chime in I'm looking to install a bigger cam on my 402 very soon. I'm using a smaller size MS3 right now. I'm curious if my heads can support the extra duration. I will be getting my FAST 92 professionally ported, adding 1 7/8's headers and installing a better merge ORY over my Catted Y-pipe. I will also be putting in some 4.10's soon. I'm trying to squeeze any bit of more NA power before I install my nitrous kit...
I'm looking to use around mid 240 to high 240 on the intake and high 240 to low 250 on the exhaust.
Big cam 402/408's chime in and let me know about your setup
My setup is as follows:
TSP 402 w/ around 7500 miles on it
PRC Stage 1 243's independently flowed 307 @ .600
MS3 cam 237/242 .603/.609
Fast 92/92 Unported (Intake will be professionally ported when the cam goes in)
85mm MAF w/ 85mm Lid
Pacesetter 1 3/4 headers (Will be swapped out for 1 7/8's size TSP headers)
Catted TSP y-pipe (Will be replaced with TSP's ORY with there new better merge design)
Magnaflow Catback
12 bolt w/ 3.73's (Will be installing 4.10's very soon)
Built t-56 using a Monster stage 3 clutch
42 lb injectors and a Walbro 255l pump
My car only gets driven around once or twice per week and I have a good tuner down here. I will also be spraying 100-150 shot with my 92 mm plate setup after I finish with this new setup. Thanks for your input!
I'm looking to use around mid 240 to high 240 on the intake and high 240 to low 250 on the exhaust.
Big cam 402/408's chime in and let me know about your setup
My setup is as follows:
TSP 402 w/ around 7500 miles on it
PRC Stage 1 243's independently flowed 307 @ .600
MS3 cam 237/242 .603/.609
Fast 92/92 Unported (Intake will be professionally ported when the cam goes in)
85mm MAF w/ 85mm Lid
Pacesetter 1 3/4 headers (Will be swapped out for 1 7/8's size TSP headers)
Catted TSP y-pipe (Will be replaced with TSP's ORY with there new better merge design)
Magnaflow Catback
12 bolt w/ 3.73's (Will be installing 4.10's very soon)
Built t-56 using a Monster stage 3 clutch
42 lb injectors and a Walbro 255l pump
My car only gets driven around once or twice per week and I have a good tuner down here. I will also be spraying 100-150 shot with my 92 mm plate setup after I finish with this new setup. Thanks for your input!
Last edited by Fifedogg; 02-17-2010 at 06:11 PM.
02-17-2010, 10:29 AM
#3
Agreed. A bigger cam will show dimishing returns with the small heads you have. Better investment would be in some 235-245 heads from TFS, AFR, or PRC.
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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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
02-17-2010, 11:14 AM
#4
Did they recover your car?? That's great news! Was it still in good shape?
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02-17-2010, 12:15 PM
#5
I pulled 45 more rwhp by getting rid of CNC 243 and fast 92 to a Ls3 CNC and fully ported LS3 intake. Note same cam! I'll be pulling the cathedral port cam specs for a LS3 rev split cam.
02-17-2010, 02:13 PM
#7
Nice! Did you buy a lottery ticket??
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
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02-17-2010, 04:21 PM
#9
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Thanks for your help!
02-18-2010, 10:44 PM
#10
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I've decided I'm gonna go with the PRC 237's as soon as I get my tax return and work bonus 
I plan on going bigger cubes in the future and these heads should accomidate those extra ci's just fine.
I plan on going bigger cubes in the future and these heads should accomidate those extra ci's just fine. 