Full Mamo H/C/I build on low mile C5 Zo6 with dyno results - LS1TECH - Camaro and Firebird Forum Discussion

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Full Mamo H/C/I build on low mile C5 Zo6 with dyno results

Old 03-08-2018, 01:30 PM
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Default Full Mamo H/C/I build on low mile C5 Zo6 with dyno results

Bought the car at the end of November with 2,900 miles on it. Due to the snow and salt I have only been able to drive it 200 or so miles since. I ordered a full N/A setup from Tony Mamo that was installed by Complete Street Performance in Pa. List as follows

Fast 102 ported by Tony
NW 102 TB
LPE 100mm Maf
LS3 injectors
Mamo 220cc heads with lightweight valve upgrade
Heads milled to 59cc
Cometic head gaskets .040 to aim for 11.45 comp
10mm rocker studs machines in
Yella Terra Pro rocker arms
Johnson limited travel lifters
Custom Comp Cam 229/232 .615/.610 114
New timing chain assembly
Ported and blueprinted oil pump
ATI dampener 10% underdrive
Manton custom pushrods 7.500

The car already had Kooks 1 3/4 longtubes with cats and midpipe and a vararam intake. I ditched the cats with the heads and cam install. Dyno had an issue with the rpm pickup so unfortunately it's in mph. Final was 468/423

Baseline with the longtubes vs the finished product
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Old 03-08-2018, 01:43 PM
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Nice! I bet it rips with that build
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Old 03-08-2018, 03:38 PM
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Nicely done sir!
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Old 03-08-2018, 04:16 PM
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You're almost exactly where I was while I still had the heavy clutch and similar cam. Very nicely done, Sir!
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Old 03-08-2018, 04:53 PM
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Originally Posted by Darth_V8r View Post
You're almost exactly where I was while I still had the heavy clutch and similar cam. Very nicely done, Sir!
Thanks, what clutch setup did you switch to and how much difference I'd it make?
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Old 03-08-2018, 05:47 PM
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Congratulations on Excellant Results!
Especially with a smedium cam.
Driving impressions yet?
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Old 03-08-2018, 05:49 PM
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Originally Posted by NAVYBLUE210 View Post
Congratulations on Excellant Results!
Especially with a smedium cam.
Driving impressions yet?
unfortunately the shop got snow yesterday so they can't finish up the street tuning side yet. Hopefully I'll have it back next week
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Old 03-08-2018, 07:39 PM
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Went from a monster S3 to a RPS carbon twin. Well worth the upgrade. Really woke the car up, which sounds strange after those kind of numbers, but you could really feel a difference
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Old 03-08-2018, 09:33 PM
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Originally Posted by itsslow98 View Post
Thanks, what clutch setup did you switch to and how much difference I'd it make?
Jacob (Darth V8r) purchased one of my unique "Mamofied" RPS designs that is five pound lighter than a typical RPS BC2 that's already pretty light. I have come to call it my "Holy Grail" clutch as I feel it is the ultimate street strip clutch for serious manual transmission enthusiasts

Here is a thread that Jacob himself wrote reviewing the clutch at the time as well as another well written thread posted more recently from another one of my clients

https://ls1tech.com/forums/manual-tr...ll-review.html

https://ls1tech.com/forums/manual-tr...ll-review.html

Both are extremely informative and make for excellent reads.

Email (or PM) me back if you need more information

This clutch will transform the way the car drives and complete the package you have already set in motion. I bet with a brush up of the tune and this clutch your well in the 485+ range. Consider a Mezziere EWP if that isn't already in the mix as well.....its alot of nickel and dimes from here that get you creeping up close to 500 in a very drivable combination that still has solid low RPM power and tons of midrange grunt as well.....doesnt get much better than that!

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Anything worth doing is worth doing well. Build it right the first time....its alot cheaper than building it twice!!
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Old 03-08-2018, 09:51 PM
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Tony, every post you make is a must-read!
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Old 03-09-2018, 10:21 AM
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I have the RPS carbon with aluminum flywheel. Excellent clutch
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Old 03-09-2018, 03:34 PM
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I have the MMS RPS BC2 Lightened with Steel Flywheel.
Excellant Clutch.
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Old 03-09-2018, 04:19 PM
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Does the RPS clutch rattle at all in higher gears at low rpm load?

I have an LT1-S monster clutch and without the sprung hub at 1750 rpm in 4th it shakes the whole car. I've read about the same issue with Mcleod RXT's on mustang forums. Surprisingly not much on LS1tech about vibration with either clutch. Glass smooth in neutral at every RPM..needs to be loaded up. More load more vibration.

It is worst in 4th gear, but also does it in 3rd and 5th. I feel like the power flow through the transmission being 1:1 offers the least damping.

1750 is a classic resonant point for a cross plane v8..I'm not surprised, but I'd sure be glad to get rid of it without having to add a ton of weight! I otherwise like the LT1-S quite a lot.
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Old 03-13-2018, 09:11 AM
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Originally Posted by itsslow98 View Post
Bought the car at the end of November with 2,900 miles on it. Due to the snow and salt I have only been able to drive it 200 or so miles since. I ordered a full N/A setup from Tony Mamo that was installed by Complete Street Performance in Pa. List as follows

Fast 102 ported by Tony
NW 102 TB
LPE 100mm Maf
LS3 injectors
Mamo 220cc heads with lightweight valve upgrade
Heads milled to 59cc
Cometic head gaskets .040 to aim for 11.45 comp
10mm rocker studs machines in
Yella Terra Pro rocker arms
Johnson limited travel lifters
Custom Comp Cam 229/232 .615/.610 114
New timing chain assembly
Ported and blueprinted oil pump
ATI dampener 10% underdrive
Manton custom pushrods 7.500

The car already had Kooks 1 3/4 longtubes with cats and midpipe and a vararam intake. I ditched the cats with the heads and cam install. Dyno had an issue with the rpm pickup so unfortunately it's in mph. Final was 468/423

Baseline with the longtubes vs the finished product
Whats your clutch setup?
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Old 03-13-2018, 11:26 AM
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Originally Posted by spanks13 View Post
Does the RPS clutch rattle at all in higher gears at low rpm load?

I have an LT1-S monster clutch and without the sprung hub at 1750 rpm in 4th it shakes the whole car. I've read about the same issue with Mcleod RXT's on mustang forums. Surprisingly not much on LS1tech about vibration with either clutch. Glass smooth in neutral at every RPM..needs to be loaded up. More load more vibration.

It is worst in 4th gear, but also does it in 3rd and 5th. I feel like the power flow through the transmission being 1:1 offers the least damping.

1750 is a classic resonant point for a cross plane v8..I'm not surprised, but I'd sure be glad to get rid of it without having to add a ton of weight! I otherwise like the LT1-S quite a lot.
Not that I've noticed. I did pick up some gear whine in fourth at low RPM when I swapped transmissions, but thats all.

But come on, who makes a 470HP 346 just to run it at low RPM all the time???? LOL kidding. that's a DD for ya!
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Old 03-13-2018, 12:31 PM
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Originally Posted by Darth_V8r View Post
Not that I've noticed. I did pick up some gear whine in fourth at low RPM when I swapped transmissions, but thats all.

But come on, who makes a 470HP 346 just to run it at low RPM all the time???? LOL kidding. that's a DD for ya!
Haha yeah very true! Ironically I lugged my C5Z way more than I do my stroked LS2. Kinda funny actually.

With my car being an LS swapped RX7 nvh is pretty ****. My engine mounts are nearly solid, and the car is a tin can lol. The chassis is also super sensitive to wheel balance and driveshaft balance. It is maddening.
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Old 03-13-2018, 01:13 PM
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Originally Posted by Tony Mamo View Post
Jacob (Darth V8r) purchased one of my unique "Mamofied" RPS designs that is five pound lighter than a typical RPS BC2 that's already pretty light. I have come to call it my "Holy Grail" clutch as I feel it is the ultimate street strip clutch for serious manual transmission enthusiasts
Do you also have a 'lightened' version of the typical RPS BC2 that includes the aluminum flywheel? I believe the off the shelf version weighs 25lbs.
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Old 03-13-2018, 03:02 PM
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Originally Posted by spanks13
Haha yeah very true! Ironically I lugged my C5Z way more than I do my stroked LS2. Kinda funny actually.

With my car being an LS swapped RX7 nvh is pretty ****. My engine mounts are nearly solid, and the car is a tin can lol. The chassis is also super sensitive to wheel balance and driveshaft balance. It is maddening.
Yeah. You may want a CF driveshaft. Kills a lot of that crap
Originally Posted by JimMueller
Do you also have a 'lightened' version of the typical RPS BC2 that includes the aluminum flywheel? I believe the off the shelf version weighs 25lbs.
I have steel with windows cut in for WR. It's around 31 lbs iirc. Full shipped er including packaging was 33.
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Old 03-13-2018, 04:03 PM
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Originally Posted by Darth_V8r View Post
Yeah. You may want a CF driveshaft. Kills a lot of that crap
I've considered a CF driveshaft - also a CV joint shaft.

This is what I'm dealing with. The low rpm vibe around 1750 I easily drive around. Another buzz comes in at higher rpm, 3600-ish. It is less intense, but more annoying. Double the rpm and halve the intensity makes me believe it is the same harmonic, just second order. For how much time, money, and effort I've put into this car I hate things like this.

Doesn't do it at all in neutral. 4th gear is the most intense. 3rd and 5th also does it, but more limited. 6th gear I try not to lug that hard so idk what it does. 4th gear being 1:1 has the least amount of damping through the transmission. The higher the load the more it shakes.


Sorry for the thread derail lol. I am really interested in the RPS clutch for performance reasons, and if it had less vibration I would have an easier time justifying a swap.
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Old 03-13-2018, 10:31 PM
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Originally Posted by Efx View Post
Whats your clutch setup?
Factory clutch setup, didn't wanna touch it till it gives up. Heard good thing about the monster lt1s as well but I like the rps setup as well
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