but lets also not assume what other people may think without proof about the claim you just made. 
Cam expert needed for my set up
Cam expert needed for my set up OK, my Z28 is the daily driver, my wants are as follows:
I'm planning on AFR 205 heads this fall, but trying to decide whether I need a new cam. My current cam and other mods are in the sig. I appreciate the help as I want to achieve the goals listed above on the first pass. I'm thinking my current cam might get me there, but I'd love some opinions.
- Peak power before 6,500 rpms
- Peak HP of 440+
- Solid low end & midrange torque
- Lift below .600
- Good lope
I'm planning on AFR 205 heads this fall, but trying to decide whether I need a new cam. My current cam and other mods are in the sig. I appreciate the help as I want to achieve the goals listed above on the first pass. I'm thinking my current cam might get me there, but I'd love some opinions.
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Why lift below .600?
I would also call tony, since you will be using their heads.
You may not need to swap cams. AFR's plus underdrive crank pulley could get you pretty dang close. You could always spring for an LSX intake manifold.
I would also call tony, since you will be using their heads.
You may not need to swap cams. AFR's plus underdrive crank pulley could get you pretty dang close. You could always spring for an LSX intake manifold.
Teching In
Joined: Jul 2005
Posts: 26
Likes: 0
From: Napa, Ca
Originally Posted by blkZ28spt
Why lift below .600?
.
.
maybe because cams with .600+ lift make mostly high end power and i believe one of his criteria for his choice of cam was low end and midrange power
just a guess Teching In
Joined: Jul 2005
Posts: 26
Likes: 0
From: Napa, Ca
Originally Posted by blkZ28spt
You need to read the cam guide and cam discussions. For one, duration/overlap is largely what determines the powerband, not lift. High lift cams don't necessarily make mostly high end power. It's also a misconception that staying with slighly lower lifts will be easy on springs. There are plenty of .580 lift cams that are hell on springs due to the harsh lobes.
again, it was just a guess. okayy............
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Originally Posted by yaboy
i said MOSTLY buddy, not all cams.
Originally Posted by yaboy
maybe because cams with .600+ lift make mostly high end power
I just threw the spring thing out there because people seem to think that if they get a .585 lift cam it'll automatically be much easier on springs than one with .605 lift.
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Verdad Gallardo 11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Originally Posted by yaboy
yes i did. you just interpreted it incorrectly, thats all
Man, step away from the computer for an hour and you miss everything.
Really, the .600 lift thing was just to try and get some longevity out of the springs, and yes, combined with the fact I'd like solid low end and most cams with .600+ lift also have well over 230+ duration. I figure with the AFR heads I won't have to go with a huge cam to make my hp goal. I'd like good hp but strong low to mid range torque as well.
Really, the .600 lift thing was just to try and get some longevity out of the springs, and yes, combined with the fact I'd like solid low end and most cams with .600+ lift also have well over 230+ duration. I figure with the AFR heads I won't have to go with a huge cam to make my hp goal. I'd like good hp but strong low to mid range torque as well.
228/232 .588/.595 113LSA 112ICL. Perfect valve events for ARF 205s. Basically, a little beefier version of Tony Mamo's 224/228 114LSA 113ICL cam. Valve events are almost identical, but mine's just a hair bigger. I'll probably run this 228/232 cam in my can in the future. It's that good.
__________________
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.
Originally Posted by Patrick G
228/232 .588/.595 113LSA 112ICL. Perfect valve events for ARF 205s. Basically, a little beefier version of Tony Mamo's 224/228 114LSA 113ICL cam. Valve events are almost identical, but mine's just a hair bigger. I'll probably run this 228/232 cam in my can in the future. It's that good.
I appreciate the info., I'll keep that cam in mind. Who sells it, I don't immediately recognize the specs.
Originally Posted by Patrick G
228/232 .588/.595 113LSA 112ICL. Perfect valve events for ARF 205s. Basically, a little beefier version of Tony Mamo's 224/228 114LSA 113ICL cam. Valve events are almost identical, but mine's just a hair bigger. I'll probably run this 228/232 cam in my can in the future. It's that good.
You could slow down the ramp speed on the exhaust lobe, but that would increase overlap at .006". Increased overlap at .006" (but not at .050") will make idle worse, vacuum at idle worse and low speed driveability worse. I'd rather trade a little spring life for better street manners and more power.
BTW, nobody makes this cam, but Thunder Racing can have Comp grind it for you for $399.
BTW, nobody makes this cam, but Thunder Racing can have Comp grind it for you for $399.
Originally Posted by EverclearZ
OK, my Z28 is the daily driver, my wants are as follows:
I'm planning on AFR 205 heads this fall, but trying to decide whether I need a new cam. My current cam and other mods are in the sig. I appreciate the help as I want to achieve the goals listed above on the first pass. I'm thinking my current cam might get me there, but I'd love some opinions.
- Peak power before 6,500 rpms
- Peak HP of 440+
- Solid low end & midrange torque
- Lift below .600
- Good lope
I'm planning on AFR 205 heads this fall, but trying to decide whether I need a new cam. My current cam and other mods are in the sig. I appreciate the help as I want to achieve the goals listed above on the first pass. I'm thinking my current cam might get me there, but I'd love some opinions.
You are going to need more cam than what you have now to hit 440 RWHP..
Last edited by slt200mph; Jul 16, 2005 at 02:38 PM.
Originally Posted by slt200mph
You are going to need more cam than what you have now to hit 440 RWHP..
Really I'd like 500 fwhp, I figured at 440 rwhp through the 12 bolt I'd easy be over 500 at the crank. Maybe I really only need to shoot for 430 or slightly less considering the additional parasitic loss from the rear and gears.
Originally Posted by EverclearZ
Because of the 12 bolt and 4.10s? I had 390 without most bolt-ons, but that was before the Moser. I figured the AFRs would be worth close to 50 peak hp. Is that not a good assumption?
Really I'd like 500 fwhp, I figured at 440 rwhp through the 12 bolt I'd easy be over 500 at the crank. Maybe I really only need to shoot for 430 or slightly less considering the additional parasitic loss from the rear and gears.
Really I'd like 500 fwhp, I figured at 440 rwhp through the 12 bolt I'd easy be over 500 at the crank. Maybe I really only need to shoot for 430 or slightly less considering the additional parasitic loss from the rear and gears.
I think that you are being a little optimistic on 50 HP for the heads..
Figure about a 15% loss from crank to rear wheels. 500 HP minus 15% is 425HP..you going to need about 520 HP at the crank to get to 440 RWHP ..that makes me think you are going to need alot more cam than what you have with the addition of good heads..IMHO they worth 35 HP...just my .02 cents..good luck with the project..
