15” conversion question

Installer.613 · 10-26-2022, 02:38 PM

I was wondering how much a 15” rear brake and wheel conversion actually helps.

laynlo15 · 10-26-2022, 03:16 PM

How much power are you making? My 16 SS made over 850 rwhp and I ran 17" Street R. Ran 9.41@147 w/1.35 60ft, after I sold it the new owner went 9.33@149 w/1.37 60ft. He was 50 to 60 lbs lighter then me on a very well prepped track. On my new 2022 we are making 707/662 and went 9.86@142 on a RC Drag Pack with MT front runner and Hoosier 28x10-17 Slicks. Put you money in other mods to make enough power to need them. Just my humble opinion.

Installer.613 · 10-26-2022, 04:59 PM

I have a 2017 SS and I'm making roughly 710 and 770 torque at the wheels on a conservative pump gas tune with water meth. It weights 4120 lbs with me in it. My 60ft was 1.39 and 9.89@139.50 and a 1.44 and 9.88@140.49 on 17 ET street R radial.

laynlo15 · 10-26-2022, 05:16 PM

Quote:

Originally Posted by Installer.613

I have a 2017 SS and I'm making roughly 710 and 770 torque at the wheels on a conservative pump gas tune with water meth. It weights 4120 lbs with me in it. My 60ft was 1.39 and 9.89@139.50 and a 1.44 and 9.88@140.49 on 17 ET street R radial.

Nice numbers, we are working on the launch timing on mine for this weekend to get mine into the 1.30s. I don't think you'll see any pickup and for sure not worth the time and money to switch it out. It's pretty costly to change so I'd stay where your at and have some fun with it. You have a great running ride. What are your mods?

Installer.613 · 10-26-2022, 06:31 PM

My current mods are Edelbrock 2650 ported by Kong,103 tb, 3.2 upper pulley I believe the lower is a 9.17 forged bottom end, BTR cam, ported heads 2” Kooks headers, Circle D torque converter and complete BMR suspension

laynlo15 · 10-26-2022, 08:22 PM

Nice mods

*Joshinator99* · 10-26-2022, 08:37 PM

Quote:

Originally Posted by Installer.613

I have a 2017 SS and I'm making roughly 710 and 770 torque at the wheels on a conservative pump gas tune with water meth. It weights 4120 lbs with me in it. My 60ft was 1.39 and 9.89@139.50 and a 1.44 and 9.88@140.49 on 17 ET street R radial.

Like Laynlo said you can definitely add some more power before making the switch to 15”. I’m learning the hard way that the timing needs to be gradually ramped in on these high power PD blower cars so you can tinker with that if need be, but your 60’ is better than mine anyway lol.

laynlo15 · 10-26-2022, 08:40 PM

I'm hoping this weekend we'll work our way into the 1.30s and if so we should be 9.70s. We are getting killed with the freaking torque management right now.

asthmamax11 · 10-26-2022, 11:16 PM

Would lightweight brakes be more beneficial to him over the 15" conversion at this point of his build ?

laynlo15 · 10-27-2022, 08:40 AM

Quote:

Originally Posted by asthmamax11

Would lightweight brakes be more beneficial to him over the 15" conversion at this point of his build ?

I'm not sure about that, I just don't know how well they work on a daily driver either, it wouldn't be an option for me but maybe for OP.

Duramacr1 · 10-27-2022, 12:49 PM

I’ll sell you my budget 15” conversión with brand new AC Delco rotors and calipers already shaved . It will bolt right on . All you need is the rear toe rods. 350.00plus shipping . I have the rear aerospace brakes now so I do t need them. This kit is basically the Gm 16” conversión with the calipers already shaved .

10-26-2022, 02:38 PM	#1
Installer.613 Drives: 2010 Camaro 2SS/RS , 1967 camaro SS Join Date: Jun 2010 Location: Ontario Canada Posts: 85	15” conversion question I was wondering how much a 15” rear brake and wheel conversion actually helps.

10-26-2022, 11:16 PM	#9
asthmamax11 Drives: 1SS Summit White 6 speed Join Date: Jul 2017 Location: Gainesville GA Posts: 582	Would lightweight brakes be more beneficial to him over the 15" conversion at this point of his build ? __________________ 16 1SS M6 White Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver

10-26-2022, 03:16 PM	#2
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	How much power are you making? My 16 SS made over 850 rwhp and I ran 17" Street R. Ran 9.41@147 w/1.35 60ft, after I sold it the new owner went 9.33@149 w/1.37 60ft. He was 50 to 60 lbs lighter then me on a very well prepped track. On my new 2022 we are making 707/662 and went 9.86@142 on a RC Drag Pack with MT front runner and Hoosier 28x10-17 Slicks. Put you money in other mods to make enough power to need them. Just my humble opinion.

10-26-2022, 04:59 PM	#3
Installer.613 Drives: 2010 Camaro 2SS/RS , 1967 camaro SS Join Date: Jun 2010 Location: Ontario Canada Posts: 85	I have a 2017 SS and I'm making roughly 710 and 770 torque at the wheels on a conservative pump gas tune with water meth. It weights 4120 lbs with me in it. My 60ft was 1.39 and 9.89@139.50 and a 1.44 and 9.88@140.49 on 17 ET street R radial.

10-26-2022, 06:31 PM	#5
Installer.613 Drives: 2010 Camaro 2SS/RS , 1967 camaro SS Join Date: Jun 2010 Location: Ontario Canada Posts: 85	My current mods are Edelbrock 2650 ported by Kong,103 tb, 3.2 upper pulley I believe the lower is a 9.17 forged bottom end, BTR cam, ported heads 2” Kooks headers, Circle D torque converter and complete BMR suspension

10-26-2022, 08:22 PM	#6
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	Nice mods

10-26-2022, 08:40 PM	#8
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,882	I'm hoping this weekend we'll work our way into the 1.30s and if so we should be 9.70s. We are getting killed with the freaking torque management right now.

10-27-2022, 12:49 PM	#11
Duramacr1 2Spdsy Drives: 2021 Camaro LT1 A10 Join Date: Mar 2016 Location: Mission hills Posts: 122	I’ll sell you my budget 15” conversión with brand new AC Delco rotors and calipers already shaved . It will bolt right on . All you need is the rear toe rods. 350.00plus shipping . I have the rear aerospace brakes now so I do t need them. This kit is basically the Gm 16” conversión with the calipers already shaved .

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