CPP Wheel Offset list! - TriFive.com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice

cpptech · 11-18-2009, 12:26 PM

This is a list of wheel offsets for the 55-57 cars. All measurements where taken from the wheel mounting surface to the center of the lower ball joint using a surface plate and height gauge. Many companies claim different measurements for the exact same rotor and spindle combination. If in doubt, ask which brake rotor they are using.

0.0 CPP drop spindle = No change in track width. Minimum wheel: 14” disc type.

+3/8” O.E. spindle with narrow hub and CPP 13” rotor = 3/8” wider per side. Minimum wheel: some 16” all 17”.

+3/8” O.E. spindle with CPP “Minimum Offset” 10.8” rotor = 3/8” wider per side. Minimum wheel: 14” disc type.

+7/8” O.E. Stock spindle with standard hub and CPP13” rotor = 7/8” wider per side. Minimum wheel: some Some16”(template avalible) all 17” and larger!

+7/8” O.E. Stock spindle with standard 11” rotor (common Chevelle rotor) = 7/8” wider per side. Minimum wheel: 14” disc type. Wide Offset

+7/16” O.E. spindle with ECI “Minimum Offset” 10.5” rotor = 7/16” wider per side. Minimum wheel: 14” disc type.

+3/16” Heidts drop spindle with 8215 rotor = 3/16” wider per side. Minimum wheel: 14” disc type.

+7/8” Heidts drop spindle with CPP 13” rotor = 7/8” wider per side. Minimum wheel: some 16”(Template available) all 17” and larger.

Chevynut · 11-18-2009, 02:56 PM

Wow, great work! That is really valuable data. I love those "zero offset" parts.

cpptech · 11-19-2009, 10:02 AM

No problem! Hope this information is handy for people.

Chevynut · 11-23-2009, 07:24 PM

Quote:

Originally Posted by cpptech

This is a list of wheel offsets for the 55-57 cars. All measurements where taken from the wheel mounting surface to the center of the lower ball joint using a surface plate and height gauge. Many companies claim different measurements for the exact same rotor and spindle combination. If in doubt, ask which brake rotor they are using.

0.0 CPP drop spindle = No change in track width. Minimum wheel: 14” disc type.

Which disc brake setup gives 0.0 offset with these spindles?

cpptech · 11-24-2009, 10:07 AM

The 55-57 with the CP30102 10.5 brake kit will move only 1/8" per side.

Chevynut · 11-24-2009, 10:34 AM

Quote:

Originally Posted by cpptech

The 55-57 with the CP30102 10.5 brake kit will move only 1/8" per side.

So why did you put 0.0" in the table if it's 1/8"? Sometimes 1/8" can make a big difference.

Thanks.

carls 56 · 11-24-2009, 04:03 PM

thanks aaron!

56Mark · 11-24-2009, 08:39 PM

It is nice to have all of this info in one place and thanks for putting it together, but I have a couple of questions. Like Chevynut mentioned above, is the zero offset option really 1/8"? Also, I have the CPP 2" dropped spindles that uses the 12" camaro rotors with the large early model Chevelle calipers, and I like them. I did not see them in the list. Also, I asked about offset when I ordered them and was told on the phone that it was 3/8". I measured more than that and the last time I ordered something from CPP I received a new catalog and it stated that the offset for this kit is 5/8" for a trifive, 3/8" for later models. 5/8" matches what I measured because I have 60 3/4" between wheel mounting surfaces (stock is about 59 1/2). Knowing it was 5/8" might have affected my decision. I am hoping to buy wheels soon and the extra 1/4" offset is $40 per wheel more for the TT II's.

cpptech · 11-25-2009, 10:08 AM

The 12" new style kits that are not on the list will yeild a .625 offset on a Tri-five.

The CP30102 (originally quoted at 1/8") with the 10.5 rotor is actually zero offset.

Hope this correction helps!

bob p · 02-21-2010, 09:05 PM

Quote:

Originally Posted by cpptech

+3/16” Heidts drop spindle with 8215 rotor = 3/16” wider per side. Minimum wheel: 14” disc type.

what's an 8215 rotor? who's part number is that?

thanks.

PS - still waiting for that catalog that I pm'd you about.

11-18-2009, 12:26 PM	#1
cpptech Official Trifive Sponsor Join Date: May 2009 cpptech's Garage Location: Anaheim, CA Posts: 298 Member #8851	CPP Wheel Offset list! This is a list of wheel offsets for the 55-57 cars. All measurements where taken from the wheel mounting surface to the center of the lower ball joint using a surface plate and height gauge. Many companies claim different measurements for the exact same rotor and spindle combination. If in doubt, ask which brake rotor they are using. 0.0 CPP drop spindle = No change in track width. Minimum wheel: 14” disc type. +3/8” O.E. spindle with narrow hub and CPP 13” rotor = 3/8” wider per side. Minimum wheel: some 16” all 17”. +3/8” O.E. spindle with CPP “Minimum Offset” 10.8” rotor = 3/8” wider per side. Minimum wheel: 14” disc type. +7/8” O.E. Stock spindle with standard hub and CPP13” rotor = 7/8” wider per side. Minimum wheel: some Some16”(template avalible) all 17” and larger! +7/8” O.E. Stock spindle with standard 11” rotor (common Chevelle rotor) = 7/8” wider per side. Minimum wheel: 14” disc type. Wide Offset +7/16” O.E. spindle with ECI “Minimum Offset” 10.5” rotor = 7/16” wider per side. Minimum wheel: 14” disc type. +3/16” Heidts drop spindle with 8215 rotor = 3/16” wider per side. Minimum wheel: 14” disc type. +7/8” Heidts drop spindle with CPP 13” rotor = 7/8” wider per side. Minimum wheel: some 16”(Template available) all 17” and larger. __________________ Thanks, Aaron Strietzel aaron@classicperform.com Classic Performance Products Inc. 378 E Orangethorpe Ave Placentia, Ca. 92870 www.classicperform.com 714/522-2000 ext. 125 Have you received CPP’s 2013 Product Catalog? Our newest catalog is now available and features full-color images, technical information and hundreds of new parts for your classic GM or Ford trucks and cars. To receive one, please email with your name and address so we can get one out to you ASAP! Last edited by cpptech; 11-20-2009 at 10:31 AM..

11-19-2009, 10:02 AM	#3
cpptech Official Trifive Sponsor Join Date: May 2009 cpptech's Garage Location: Anaheim, CA Posts: 298 Member #8851	No problem! Hope this information is handy for people. __________________ Thanks, Aaron Strietzel aaron@classicperform.com Classic Performance Products Inc. 378 E Orangethorpe Ave Placentia, Ca. 92870 www.classicperform.com 714/522-2000 ext. 125 Have you received CPP’s 2013 Product Catalog? Our newest catalog is now available and features full-color images, technical information and hundreds of new parts for your classic GM or Ford trucks and cars. To receive one, please email with your name and address so we can get one out to you ASAP!

11-24-2009, 10:07 AM	#5
cpptech Official Trifive Sponsor Join Date: May 2009 cpptech's Garage Location: Anaheim, CA Posts: 298 Member #8851	The 55-57 with the CP30102 10.5 brake kit will move only 1/8" per side. __________________ Thanks, Aaron Strietzel aaron@classicperform.com Classic Performance Products Inc. 378 E Orangethorpe Ave Placentia, Ca. 92870 www.classicperform.com 714/522-2000 ext. 125 Have you received CPP’s 2013 Product Catalog? Our newest catalog is now available and features full-color images, technical information and hundreds of new parts for your classic GM or Ford trucks and cars. To receive one, please email with your name and address so we can get one out to you ASAP!

11-24-2009, 04:03 PM	#7
carls 56 Trifive Leaders Club 2 Ball Pool Champion! Alien Invasion 2 Champion! Altex Champion! Anti Aircraft Gun Champion! Baccarat Champion! Block Buster Champion! Cliff Diver Champion! Get-A-Head Champion! Ninja Turtles 2 Champion! Pong Champion! Super Kickups Champion! Ultimate Ping Champion! Weetabix Games:Running Champion! Clash`N Slash Champion! Graveler Gunblast Champion! Cone Crazy Champion! Bug Hunt Champion! PelPet Champion! Hamster Race Champion! pursuit Champion! Weetabix Games:Cycling Champion! Red Kens Pigeon Cull Champion! Lotads Lament Champion! Desert Dash Champion! Bubble Blubbs Champion! Ed, Edd, Eddy Champion! Snowboarding Santa Champion! piljard Champion! Mini Putt 2 Champion! Weetabix Games:Swimming Champion! J&B Snowman Punch Champion! Roving Reporter Champion! Cone Crazy Champion! Extreme Racing Champion! Pepsi Bucket Launcher Champion! Springfield Snow Fight Champion! Lumpy Artist Champion! Dribble Worldcup Champion! Flyswatter Champion! Subzero Champion! Starfrosch Champion! Tobby Stick Balance Champion! Flash Golf Champion! Fruity Shuffler Champion! Spy Hunter Champion! Juice Squeezer Champion! Spell Catcher Champion! Klingemon Champion! Harry Potter: The Marauder`s Map Champion! Chansey Champion! JigSaw Puzzle Dog Champion! Renault Mr.X Champion! Grab-A-Snack Hurdles Champion! Slider Puzzle Champion! Plops Champion! Conundrum 3D Champion! Join Date: Feb 2008 carls 56's Garage Location: brandy station, va Posts: 33,125 Member #4923	thanks aaron! __________________ "DRIVE AND ENJOY THEM WHILE YOU WORK ON THEM, LIFES TO SHORT" my toys: 56 4dr 210 & 57 4dr belair ARMY NAM VET (so proud)

11-24-2009, 08:39 PM	#8
56Mark Senior Member 1 Silver Star Join Date: Jun 2008 56Mark's Garage Location: Kingsport, Tennessee Posts: 931 Member #5675	It is nice to have all of this info in one place and thanks for putting it together, but I have a couple of questions. Like Chevynut mentioned above, is the zero offset option really 1/8"? Also, I have the CPP 2" dropped spindles that uses the 12" camaro rotors with the large early model Chevelle calipers, and I like them. I did not see them in the list. Also, I asked about offset when I ordered them and was told on the phone that it was 3/8". I measured more than that and the last time I ordered something from CPP I received a new catalog and it stated that the offset for this kit is 5/8" for a trifive, 3/8" for later models. 5/8" matches what I measured because I have 60 3/4" between wheel mounting surfaces (stock is about 59 1/2). Knowing it was 5/8" might have affected my decision. I am hoping to buy wheels soon and the extra 1/4" offset is $40 per wheel more for the TT II's. __________________ 56-210 2 dr sedan Mark

11-18-2009, 02:56 PM	#2
Chevynut member Join Date: Jan 2007 Chevynut's Garage Location: Fort Collins, CO Posts: 12,277 Member #1769	Wow, great work! That is really valuable data. I love those "zero offset" parts.

11-25-2009, 10:08 AM	#9
cpptech Official Trifive Sponsor Join Date: May 2009 cpptech's Garage Location: Anaheim, CA Posts: 298 Member #8851	The 12" new style kits that are not on the list will yeild a .625 offset on a Tri-five. The CP30102 (originally quoted at 1/8") with the 10.5 rotor is actually zero offset. Hope this correction helps! __________________ Thanks, Aaron Strietzel aaron@classicperform.com Classic Performance Products Inc. 378 E Orangethorpe Ave Placentia, Ca. 92870 www.classicperform.com 714/522-2000 ext. 125 Have you received CPP’s 2013 Product Catalog? Our newest catalog is now available and features full-color images, technical information and hundreds of new parts for your classic GM or Ford trucks and cars. To receive one, please email with your name and address so we can get one out to you ASAP!

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