AFR 215 Bullet UPDATE!!
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,780
Likes: 934
From: Indianapolis IN
AFR 215 Bullet UPDATE!!
Well it has been awhile since the engine dyno day at Westech of my new Tony Mamo built stroked LS2 with the brand new AFR 215 LS heads. I figure you all were due an update.
Reference this thread for those who didnt follow the detailed build…..
http://forums.corvetteforum.com/c5-t...-complete.html
The engine has been reinstalled in my 2002 EB Z06. Shortly after installation and during normal break-in and “test driving”, the pilot bearing decided to fail. OF COURSE!! A $12 part to ruin my week LOL!!. That took some time to get replaced. Then bad weather prevented making any real head way with tuning along with Mike Norris being busy with other scheduled customer projects. Why he didn’t think that I was the only person on earth that needed my car worked on is beyond me LOL!!
Anyway, I have some preliminary dyno results we got a month ago from Mike’s stingy dyno (I think his dyno’s nickname was/is “The Humbler” when it was in Florida LOL!). I have been waiting to see if we could tweak a few more with the final tune but with mine (and Mike's) hectic schedule that may be a few more weeks, so I thought I would share what I have now. And for those who will point to the fact it's in STD (versus SAE), know that Mike normally tests with that correction factor to get his numbers closer to the typical SAE results on other dyno's. In fact when I told Tony I was going to have Mike do the tune after he moved from Florida to Indy, I heard crickets on the phone, and he mentioned he liked Mike but knew how stingy his dyno was known to be. The plan is for Mike to spend more time with some street tuning/drivability and WOT stuff to finalize everything (Mike is on vacation this week) and when we do will look for the last bit of TQ and HP we didn't have time to find in the first go round which was more about getting the car up and running to allow me to put some miles on the chassis to make sure everything is AOK. Once Mike is back in town, 41that the final tuning will be taken care of.
I am also planning on strapping the car to another local dyno soon, just as a comparison (it’s always good to have several sample sets of data). Also, I hope to get to the track in a couple of months for some big MPH numbers to back up the dyno results (there are no dyno tricks going on with this pony and I plan on proving that for everyone – I have nothing to hide).
A note about how this car drives: IT IS INSANE!!! The low end, low RPM throttle response is instant. The torque down low is asphalt peeling. On street tires (Nitto INVO 305/30’s) 1st gear is useless. 2nd gear is useless. The car will blow the rear tires off in 3rd gear if I stab the gas at anything above 2500rpm. I literally can not get full tire grab until 4th gear. It really is a tad bit ridiculous for a car that will never see the track LOL!! I actually LOVE IT. It is EXACTLY what I wanted out of the build. I wanted more low rpm torque than the tires could handle and I got that and more. She still idles all day long at 950RPM, cruises at 1100RPM in 6th gear without issue. The car makes enough torque I can accelerate in 6th gear form 1500RPM and it actually sets you back in the seat a tad bit.
The RPS Street Twin Lite Tony helped me with has taken some getting used to, but it is working flawlessly. Simply a GREAT clutch! I can feather it in a parking lot or take off from a stop without touching the gas. And since it is very light, it allows the motor to rev like a freaking banshee on crack! Anyone on the fence about a clutch, I would HIGHLY recommend the RPS unit.
The GHL Bullet exhaust is a dream. I came from B&B Bullets (which I loved – but too much damn drone). The GHL’s allow me to cruise around without getting a headache now. And I can actually hear the stereo! Still has a nice aggressive pop at idle, and makes women mess their mascara up when I go to full throttle.
The Pfadt coilovers are simply the best mod for the money, period. Ride quality is far and above the previous lowered on stock bolts w/ Bilstein shocks setup. The car is FUN to drive! And I mean FUN! A firm but not tooth rattling ride. Car tells you what is doing. I LOVE IT I LOVE IT I LOVE IT!!!
Once again MAJOR kudos to Tony Mamo for all of his advice, direction, and of course building me one of the baddest street driven LS2’s on the planet.
Graph below along with a “teaser” vid of the car idling.
Stay tuned for some vids showing drivability, and of course maybe some “spirited” reference material
93 octane - weekend grocery getter :angel:
http://s459.photobucket.com/albums/q...=Idleclip1.flv
Reference this thread for those who didnt follow the detailed build…..
http://forums.corvetteforum.com/c5-t...-complete.html
The engine has been reinstalled in my 2002 EB Z06. Shortly after installation and during normal break-in and “test driving”, the pilot bearing decided to fail. OF COURSE!! A $12 part to ruin my week LOL!!. That took some time to get replaced. Then bad weather prevented making any real head way with tuning along with Mike Norris being busy with other scheduled customer projects. Why he didn’t think that I was the only person on earth that needed my car worked on is beyond me LOL!!
Anyway, I have some preliminary dyno results we got a month ago from Mike’s stingy dyno (I think his dyno’s nickname was/is “The Humbler” when it was in Florida LOL!). I have been waiting to see if we could tweak a few more with the final tune but with mine (and Mike's) hectic schedule that may be a few more weeks, so I thought I would share what I have now. And for those who will point to the fact it's in STD (versus SAE), know that Mike normally tests with that correction factor to get his numbers closer to the typical SAE results on other dyno's. In fact when I told Tony I was going to have Mike do the tune after he moved from Florida to Indy, I heard crickets on the phone, and he mentioned he liked Mike but knew how stingy his dyno was known to be. The plan is for Mike to spend more time with some street tuning/drivability and WOT stuff to finalize everything (Mike is on vacation this week) and when we do will look for the last bit of TQ and HP we didn't have time to find in the first go round which was more about getting the car up and running to allow me to put some miles on the chassis to make sure everything is AOK. Once Mike is back in town, 41that the final tuning will be taken care of.
I am also planning on strapping the car to another local dyno soon, just as a comparison (it’s always good to have several sample sets of data). Also, I hope to get to the track in a couple of months for some big MPH numbers to back up the dyno results (there are no dyno tricks going on with this pony and I plan on proving that for everyone – I have nothing to hide).
A note about how this car drives: IT IS INSANE!!! The low end, low RPM throttle response is instant. The torque down low is asphalt peeling. On street tires (Nitto INVO 305/30’s) 1st gear is useless. 2nd gear is useless. The car will blow the rear tires off in 3rd gear if I stab the gas at anything above 2500rpm. I literally can not get full tire grab until 4th gear. It really is a tad bit ridiculous for a car that will never see the track LOL!! I actually LOVE IT. It is EXACTLY what I wanted out of the build. I wanted more low rpm torque than the tires could handle and I got that and more. She still idles all day long at 950RPM, cruises at 1100RPM in 6th gear without issue. The car makes enough torque I can accelerate in 6th gear form 1500RPM and it actually sets you back in the seat a tad bit.
The RPS Street Twin Lite Tony helped me with has taken some getting used to, but it is working flawlessly. Simply a GREAT clutch! I can feather it in a parking lot or take off from a stop without touching the gas. And since it is very light, it allows the motor to rev like a freaking banshee on crack! Anyone on the fence about a clutch, I would HIGHLY recommend the RPS unit.
The GHL Bullet exhaust is a dream. I came from B&B Bullets (which I loved – but too much damn drone). The GHL’s allow me to cruise around without getting a headache now. And I can actually hear the stereo! Still has a nice aggressive pop at idle, and makes women mess their mascara up when I go to full throttle.
The Pfadt coilovers are simply the best mod for the money, period. Ride quality is far and above the previous lowered on stock bolts w/ Bilstein shocks setup. The car is FUN to drive! And I mean FUN! A firm but not tooth rattling ride. Car tells you what is doing. I LOVE IT I LOVE IT I LOVE IT!!!
Once again MAJOR kudos to Tony Mamo for all of his advice, direction, and of course building me one of the baddest street driven LS2’s on the planet.
Graph below along with a “teaser” vid of the car idling.
Stay tuned for some vids showing drivability, and of course maybe some “spirited” reference material
93 octane - weekend grocery getter :angel:
http://s459.photobucket.com/albums/q...=Idleclip1.flv
Drifting
Joined: Jan 2004
Posts: 1,419
Likes: 6
From: Alamosa CO
Those are great numbers and a great looking torque curve!
I can guarantee you if you bolt a drag pack on it and make a few passes to get the launch figured out you will be running deep into the 10's. My car is making similar power numbers out of a 416 and I know what you are going through trying to get traction on the street, but it sure is FUN driving the beast! Enjoy the crap out of it and keep the shiny side up! 
Jimbo
I can guarantee you if you bolt a drag pack on it and make a few passes to get the launch figured out you will be running deep into the 10's. My car is making similar power numbers out of a 416 and I know what you are going through trying to get traction on the street, but it sure is FUN driving the beast!
Enjoy the crap out of it and keep the shiny side up! Jimbo
Drifting
Joined: Jan 2004
Posts: 1,419
Likes: 6
From: Alamosa CO
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 2,780
Likes: 934
From: Indianapolis IN
Thanks all. Car is ABSOLUTELY fun!!
Here is some interesting comparo data. When I bought this car, it came with a "built" (built by a forum vendor that will remain unnamed) 402 with ETP LS7 style heads (big dollar heads), LS7 intake and a 244/252 .602/.612 114LSA cam. It "supposedly" made 540 RWHP. Well it didnt. Below is the original dyno sheet from DTE shortly after I bought the car. Below that graph is my current graph with DTE's dyno results "overlayed" onto it (DTE did NOT build the car, they simply retuned it for me after I bought it). The power difference (area under the curve) is simpy amazing. And you sure can feel it on the street. The previous motor had zero throttle reponse below 4500 rpm. I had trouble spinning the rear tires in 2nd gear with the old motor. I can easily blow the rear tires off the car in 3rd gear with the new motor. I LOVE IT!! The new powerplant combo is MUCH more fun! Just goes to show that bigger is not always better.
Here is some interesting comparo data. When I bought this car, it came with a "built" (built by a forum vendor that will remain unnamed) 402 with ETP LS7 style heads (big dollar heads), LS7 intake and a 244/252 .602/.612 114LSA cam. It "supposedly" made 540 RWHP. Well it didnt. Below is the original dyno sheet from DTE shortly after I bought the car. Below that graph is my current graph with DTE's dyno results "overlayed" onto it (DTE did NOT build the car, they simply retuned it for me after I bought it). The power difference (area under the curve) is simpy amazing. And you sure can feel it on the street. The previous motor had zero throttle reponse below 4500 rpm. I had trouble spinning the rear tires in 2nd gear with the old motor. I can easily blow the rear tires off the car in 3rd gear with the new motor. I LOVE IT!! The new powerplant combo is MUCH more fun! Just goes to show that bigger is not always better.
