Cam specs for N/A 418? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Ravener · 06-22-2013, 09:05 AM

Parts ordered and (hopefully) shipped for 418 build (TSP LS3 4.080 block and forged Callies/Comp star rotating assembly). Heads will be CNC ported to match a Fast 102 and Nick W 102 TB. Cam spec being considered is 235/250 .642/.642 114 lsa. This was based off a build producing 626 rwhp @ 6400 / 583 Tq @ 5300. There's a lot of knowledgeable folks on here...any recommendation? Cam specs?

willhe64 · 06-22-2013, 09:27 AM

That's a massive cam. You might want to run your G6X3. At least at first.

Ravener · 06-22-2013, 09:41 AM

In all honesty I'm very gun shy about touching the G6X3 cam again. After 2 engines failures with it i'm not comfortable going that route again. I admit the failures could be attributed to builder/installer issues but i'm leery.

AG454 · 06-22-2013, 09:48 AM

With the extra cubes your new build will have, that cam should feel a lot like the G6X3 did in the LS3. Is that cam what TSP is recommending?

Ravener · 06-22-2013, 09:51 AM

The cam specs come from a build write up on LME's 418 producing the numbers posted.

FosterSS · 06-22-2013, 09:55 AM

Damn, 418ci. Jealous man, that sure is a monster cam though! keep us updated on the build?

AG454 · 06-22-2013, 10:04 AM

Those are impressive numbers. What compression ratio are you going with? I'm sure some of the experts will chime in soon. I can tell you I too broke a LS3 with a G6X3, and when you get your stroked engine you are going to be so much happier with the low end torque you will wish you swapped earlier.

Ravener · 06-22-2013, 10:12 AM

Planning on 11.7:1 CR. Hope to dial in A/F at 12.6:1.

AG454 · 06-22-2013, 10:36 AM

Your short block plan is very good. With that cam I would say make sure you have a similar plan for your lifters, valve springs, pushrods, rockers, and valve train geometry and you should end up with a killer engine.

Ravener · 06-22-2013, 10:58 AM

Lifters will be LS7 (yes...same darn thing as LS3...) unless builder thinks going to something more stout would be in order, however the LME build specs used LS7s to no ill effect. Dual springs...though need to make sure they'll support 170 lbs seat pressure and 430 lbs of open pressure...and getting trunion upgrade to be smart.

litle88 · 06-22-2013, 10:59 AM

I say go with this cam
http://www.compcams.com/Company/CC/c...csid=1415&sb=0

My dumb azz should of done it! I kick my self in the azz I ended up with the one in my sig.
On a dynojet I would of been close to 600hp thru a heavy 4.11 geared 9" and a spool and driveshaft. My stroker sucked that cam right up!

As far a springs, get the Brian Tooley platinum springs, if you want to keep the lifter trays (which I'd advise not to) get the BTR SLR lifters which is an ipgrade to the GM Ls7 lifters if not then get some linkbar lifters like morel or lunati they are the same ones and avoid a lifter turning on you. I'd also recommend a set of BTR 3/8 pushrods which are thicker and not at all more expensive than the 5/16 ones. NOTE since the heads are off they will need just a bit of clearancing and most porters do this anyways but let then know you'll be running them.

Just my .2

litle88 · 06-22-2013, 11:01 AM

430 is ALOT of open pressure, that's why I decided to go linkbar lifters. And I have nothing to worry about.

litle88 · 06-22-2013, 11:03 AM

I edited post 11 sorry.

Ravener · 06-22-2013, 11:08 AM

Ok researching linkbar lifters...and reviewing the linked cam specs, excellent suggestions!

06-22-2013, 09:05 AM	#1
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	Cam specs for N/A 418? Parts ordered and (hopefully) shipped for 418 build (TSP LS3 4.080 block and forged Callies/Comp star rotating assembly). Heads will be CNC ported to match a Fast 102 and Nick W 102 TB. Cam spec being considered is 235/250 .642/.642 114 lsa. This was based off a build producing 626 rwhp @ 6400 / 583 Tq @ 5300. There's a lot of knowledgeable folks on here...any recommendation? Cam specs? __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.

06-22-2013, 09:27 AM	#2
willhe64 Drives: 2012 45th Vert, 2011 4x4, 9sec Vega Join Date: Mar 2012 Location: Canada Posts: 2,188	That's a massive cam. You might want to run your G6X3. At least at first. __________________ I feel it only fair to warn you, I have a black belt in CAPS LOCK.

06-22-2013, 09:41 AM	#3
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	In all honesty I'm very gun shy about touching the G6X3 cam again. After 2 engines failures with it i'm not comfortable going that route again. I admit the failures could be attributed to builder/installer issues but i'm leery. __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.

06-22-2013, 09:48 AM	#4
AG454 I am not "Fast & Furious" Drives: 2010 Camaro LSX454 1LE Join Date: Nov 2008 Location: Greeley Colorado Posts: 1,040 View My Garage	With the extra cubes your new build will have, that cam should feel a lot like the G6X3 did in the LS3. Is that cam what TSP is recommending? __________________ The day I take a bend too fast Judgement that could be my last I'll be wiped right off the slate Don't wait up 'cause I'll be late, I'll be late

06-22-2013, 09:51 AM	#5
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	The cam specs come from a build write up on LME's 418 producing the numbers posted. __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.

06-22-2013, 09:55 AM	#6
FosterSS Guardians Of The Night Drives: '13 ZL1 CRT Join Date: May 2011 Location: New Mexico Posts: 500 View My Garage	Damn, 418ci. Jealous man, that sure is a monster cam though! keep us updated on the build? __________________ 2013 ZL1 Crystal Red Tintcoat, Stock...for now 1968 SS/RS 396- being resurrected. 2011 SS LS3-Cammed, bolt-ons.(SOLD)

06-22-2013, 10:04 AM	#7
AG454 I am not "Fast & Furious" Drives: 2010 Camaro LSX454 1LE Join Date: Nov 2008 Location: Greeley Colorado Posts: 1,040 View My Garage	Those are impressive numbers. What compression ratio are you going with? I'm sure some of the experts will chime in soon. I can tell you I too broke a LS3 with a G6X3, and when you get your stroked engine you are going to be so much happier with the low end torque you will wish you swapped earlier. __________________ The day I take a bend too fast Judgement that could be my last I'll be wiped right off the slate Don't wait up 'cause I'll be late, I'll be late

06-22-2013, 10:12 AM	#8
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	Planning on 11.7:1 CR. Hope to dial in A/F at 12.6:1. __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.

06-22-2013, 10:36 AM	#9
AG454 I am not "Fast & Furious" Drives: 2010 Camaro LSX454 1LE Join Date: Nov 2008 Location: Greeley Colorado Posts: 1,040 View My Garage	Your short block plan is very good. With that cam I would say make sure you have a similar plan for your lifters, valve springs, pushrods, rockers, and valve train geometry and you should end up with a killer engine. __________________ The day I take a bend too fast Judgement that could be my last I'll be wiped right off the slate Don't wait up 'cause I'll be late, I'll be late

06-22-2013, 10:58 AM	#10
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	Lifters will be LS7 (yes...same darn thing as LS3...) unless builder thinks going to something more stout would be in order, however the LME build specs used LS7s to no ill effect. Dual springs...though need to make sure they'll support 170 lbs seat pressure and 430 lbs of open pressure...and getting trunion upgrade to be smart. __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.

06-22-2013, 10:59 AM	#11
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	I say go with this cam http://www.compcams.com/Company/CC/c...csid=1415&sb=0 My dumb azz should of done it! I kick my self in the azz I ended up with the one in my sig. On a dynojet I would of been close to 600hp thru a heavy 4.11 geared 9" and a spool and driveshaft. My stroker sucked that cam right up! As far a springs, get the Brian Tooley platinum springs, if you want to keep the lifter trays (which I'd advise not to) get the BTR SLR lifters which is an ipgrade to the GM Ls7 lifters if not then get some linkbar lifters like morel or lunati they are the same ones and avoid a lifter turning on you. I'd also recommend a set of BTR 3/8 pushrods which are thicker and not at all more expensive than the 5/16 ones. NOTE since the heads are off they will need just a bit of clearancing and most porters do this anyways but let then know you'll be running them. Just my .2 __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

06-22-2013, 11:01 AM	#12
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	430 is ALOT of open pressure, that's why I decided to go linkbar lifters. And I have nothing to worry about. __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

06-22-2013, 11:03 AM	#13
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	I edited post 11 sorry. __________________ 2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.

06-22-2013, 11:08 AM	#14
Ravener Drives: 2010 2SS RS M6 Blk Join Date: Jul 2010 Location: Md Posts: 287	Ok researching linkbar lifters...and reviewing the linked cam specs, excellent suggestions! __________________ 418 LS3, custom cam, tuned vararam, ported tb, Kooks stepped LT's, Kooks Hi-Flo cats and 2.5" street sleeper cat back, 18% UDP, crap stock rear tire size 12.03 @ 117 mph.