Comp Cam
Thread Starter
Melting Slicks
Joined: Mar 2009
Posts: 2,300
Likes: 115
From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
Comp Cam
Anyone using the the Comp Cam XFI™ XE-R, XER273HR (224/230 .581/.588 114)?
What were your supporting mods (heads, intake, headers)?
With the other mods and a tune what were the results (rwhp/rwtq) and was it street friendly in the sense of idle, lope, surging, etc.?
Any input would be greatly appreciated. Thanks in advance.
What were your supporting mods (heads, intake, headers)?
With the other mods and a tune what were the results (rwhp/rwtq) and was it street friendly in the sense of idle, lope, surging, etc.?
Any input would be greatly appreciated. Thanks in advance.
Le Mans Master
Joined: May 2006
Posts: 7,826
Likes: 221
From: Hillsboro OR
My recent build used a Comp Cam X-ER lobes 224/230 .585/.595 113. I also added new stock 243 heads, dual springs, LS2 timing chain and a hi-vloume oil pump, etc.
Makes great power. 416 rwhp/392 rwtq on a loaded Mustang dyno. It is my DD. Idle park=900 Idle gear=750 Nice lope at idle. It's like music to my ears.
The car shakes you a little at idle too. 
Makes great power. 416 rwhp/392 rwtq on a loaded Mustang dyno. It is my DD. Idle park=900 Idle gear=750 Nice lope at idle. It's like music to my ears.
The car shakes you a little at idle too.
Last edited by Bluefire; Aug 29, 2010 at 04:32 AM.
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
If you do that cam just use a good behive spring package installed correctly and a stiff set of pushrods. No need to lose HP by running dual springs on that cam. The Pac 1218's or 1518's would be work very well.
Thread Starter
Melting Slicks
Joined: Mar 2009
Posts: 2,300
Likes: 115
From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
My recent build used a Comp Cam X-ER lobes 224/230 .585/.595 113. I also added new stock 243 heads, dual springs, LS2 timing chain and a hi-vloume oil pump, etc.
Makes great power. 416 rwhp/392 rwtq on a loaded Mustang dyno. It is my DD. Idle park=900 Idle gear=750 Nice lope at idle. It's like music to my ears. The car shakes you a little at idle too.
Makes great power. 416 rwhp/392 rwtq on a loaded Mustang dyno. It is my DD. Idle park=900 Idle gear=750 Nice lope at idle. It's like music to my ears.
The car shakes you a little at idle too. Last edited by alxltd1; Aug 29, 2010 at 11:16 AM.
Le Mans Master
Joined: Nov 2003
Posts: 8,003
Likes: 249
From: Tampa Fl
St. Jude Donor '12-'13-'14
if you go with the AFR 205 heads milled to 62cc ( which is .020 off ), you'll make you goal of 420 RWHP and have a very nice street mild running car.
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
So would this cam (the 224/230 .581/.588 114) in combination with AFR 205 heads (62cc), LS6 Intake, LS6 throttle body and MAF, XS Power 1 3/4 headers and X pipe, Ti exhaust and a dual cone CAI through a Vararam power duct be in the 420rwhp neighborhood? This is on a well maintained LS1 (60,000 miles) in a 2000 coupe 6speed with a 3:90 rear. Would the LS2 timing chain or an aftermarket, and a different oil pump be required? Would I have to change the injectors to something larger as well?
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Thread Starter
Melting Slicks
Joined: Mar 2009
Posts: 2,300
Likes: 115
From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
if you go with the AFR 205 heads milled to 62cc ( which is .020 off ), you'll make you goal of 420 RWHP and have a very nice street mild running car.
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
If you're going to buy AFR heads go ahead and get the 225's as they're nothinmg more than a ported 243 with a thick deck. If you don't already have the headers get the 1 7/8 " which will help in your power goals. I would use a Pro Gears timing set because they are very strong and about the most accurate timing set i've used. I would also replace the stock oil pump with a Melling oil pump. At 60K miles there's no good reason not to change the oil pump. Your stock injectors will be pretty much maxed out with those mods.
Thread Starter
Melting Slicks
Joined: Mar 2009
Posts: 2,300
Likes: 115
From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
Their web site says it will, but recommends these heads for more radical mods. They imply that it may, on a stock 346ci or mildly modded LS1, lose some low end torque but increase high end hp. They also say it is intended more for a 396-427 cubic inch engine.
Le Mans Master
Joined: Nov 2003
Posts: 8,003
Likes: 249
From: Tampa Fl
St. Jude Donor '12-'13-'14
I was at a shop before the summer and someone had 224 with the AFR225 heads. It was in a camaro and it didnt break 400 RWHP. My personnal opinion was it was to much heads for such a small cam.
205's are what you'd want for your application
205's are what you'd want for your application
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
The AFR 225s fit on a stock LS1/LS6 and they're not going to be to much head. IMO the 205's are to small unless you have them ported and then you might as well buy the 225's.
If I were going to buy an off the shelf set of heads it would be the TFS's.
If I were going to buy an off the shelf set of heads it would be the TFS's.
Melting Slicks
Joined: Aug 2006
Posts: 2,205
Likes: 2
From: port monmouth nj
if you go with the AFR 205 heads milled to 62cc ( which is .020 off ), you'll make you goal of 420 RWHP and have a very nice street mild running car.
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
Its clode to my set up before my FAST 90/90 and I put down 425 RWHP.
Its very easy on the street, and lots of fun when you put your foot down.
No you wont be in the 10's
ing side once it warms up
Pro
Joined: Dec 2003
Posts: 654
Likes: 1
From: chandler az
I have TSP 5.3 stage 2.5 with a 228/228 588/588 cam running 36lb injectors. I talked to the guys at TSP and they said some guys were fine with stock injectors and some guys were running out of duty cycle on thier stock injectors. I opted for the bigger injectors because I didn't want to do a tune twice.
I like the numbers the FAST manifolds are getting, but really pissed off about how much they are asking for that setup.
TSP was working on a set of LS3 heads to work on a 346 ci engine. That would allow the use of an L76 manifold which runs about $400 versus a FAST at $900.
I like the numbers the FAST manifolds are getting, but really pissed off about how much they are asking for that setup.
TSP was working on a set of LS3 heads to work on a 346 ci engine. That would allow the use of an L76 manifold which runs about $400 versus a FAST at $900.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
I was under the impression the LS3 heads have just too big of a chamber and the L76 manifold and tb are just about useless.
243 heads and stock LS6 manifold and tb would still be a better choice for a 346 LS1/LS6 block.
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
Pro
Joined: Dec 2003
Posts: 654
Likes: 1
From: chandler az
The LS3 heads flow big. If you want to make use of the flow numbers they produce, you need to run a big cam. It comes stock on a 6.2 liter engine which is not a whole lot bigger than a 5.7, but this is all a moot point if they head is not available for an engine with less than a 4 inch bore. It's almost cheaper to just get a bigger bore engine to take advantage of the price and flow of the LS3 head with L-76 manifold. I keep eyeing that 418 short block from TSP.
Thread Starter
Melting Slicks
Joined: Mar 2009
Posts: 2,300
Likes: 115
From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
Willyfastz, Chevylad, and AU N EGL
Thanks guys for the info and insight. It looks like the Comp Cam I referenced will do what I am aiming to accomplish. As far as the heads go I will probably just have a set of 243's ported. Please feel free to continue to use the thread to debate the different head configurations and application to the LS1 5.7, interesting stuff.
