LS1 to 69 Camaro caliper template.Where?

[billybobdupree]

Search didn't help!!!
I'm looking for the C5/LS1 caliper template...
I have the template for the C4 caliper bracket, but it is different than the C5/LS1 caliper bracket template, (just found out. DOH!).


thanks for the help.
billy

[Hammered]

The C5 and LS1 brackets are different. The C5 uses a 13" rotor and the LS1 uses a 12" rotor. Rotor backspacings are different too.

[MrQuick]

Give bigblockolds a hollar, he might have a few he doesn't need. https://www.pro-touring.com/forum/member.php?find=lastposter&t=32210

[billybobdupree]

The C5 and LS1 brackets are different. The C5 uses a 13" rotor and the LS1 uses a 12" rotor. Rotor backspacings are different too.


OK ,I guess I posted incorrect or confusing info.
I am using the LS1 calipers not the C5 calipers.
I could have sworn they were the same externally except for the cooling fins and the vette logo.
I thought the bolt pattern was the same also.
My plan is to use the C4 rotors which are 13''( I think they are actually 12.75'' ).
Will this combo not work?
Do I need the C5 callipers instead of the LS1 callipers?


I know I have seen the templates somewhere on this site before but just can't remember where.

any help?
thanks,
Billy

[MrQuick]

You can use the C5's in LS1 abutments....check Pozzi's site.

[billybobdupree]

You can use the C5's in LS1 abutments....check Pozzi's site.

So, does that mean that the bolt pattern is the same?

[Apogee]

The LS1 and C5 caliper bodies are interchangeable, but not the same. The pin spacing is the same at 204mm [8.032"], but the LS1 calipers are less rigid due to both less material across the bridge and being gravity cast versus pressure cast. The pad abutment brackets are totally different, though the mounting bolt spacing is the same at 128mm [5.039"]. The LS1 PAB uses M12x1.75 and the C5 PAB uses M14x2.0 hardware. Pads are a different FMSI spec and the anti-rattle springs/shims are different as well.

[Hammered]

An even bigger difference between LS1 and C5 calipers is the piston bore size. The LS1s have larger pistons to compensate for the smaller rotor. I've read that using them on 13" rotors will cause biasing problems.

[jonnyc]

kind of a stupid question here but isn't a c5 an ls1.you have corvette calipers and f-body calipers.they are both ls1's.

[Apogee]

An even bigger difference between LS1 and C5 calipers is the piston bore size. The LS1s have larger pistons to compensate for the smaller rotor. I've read that using them on 13" rotors will cause biasing problems.

LS1 F-body calipers have 43mm pistons, C5/C6 front calipers have 40.5mm pistons. This results in just over 10% more piston area with the LS1 F-body calipers which in part helps to offset the decreased rotor diameter (about 7% smaller than the C5 rotor) and in part offsets the heavier forward weight bias of the LS1 F-body versus a C5 Corvette.

Since overall brake balance is always a concern, you can easily bump the rears up to the C6 Z51 330mm rotors and PABs, increasing your rear brake torque by about 8%. Or, depending on the situation, you could also reduce rear brake torque by about 5% by choosing to run the smaller piston C6 rear calipers (42mm) versus the C5's (45mm). :hmm: As the saying goes, there's more than one way to skin a cat...I'm just not sure what the one way is that everybody knows.

[70TWO NOVA]

Hey Billy, this may help: http://www.kore3.com/tech.php#fitment_templates

[billybobdupree]

kind of a stupid question here but isn't a c5 an ls1.you have corvette calipers and f-body calipers.they are both ls1's.

Well kinda...
Incase you haven't figured out the "lingo" yet, we are refering to
f-body's with LS1's as "LS1 calipers" and C5's as "C5" calipers.

But, Yes jonnyc, you are correct in stating that both cars have LS1's.

Apogee- you sound like you know your stuff. So much it makes me wonder if I should even use the LS1 calipers.
I will be using 17'' wheels, and I already have the LS1 calipers, so that's why I was going to go the LS1 route.
It's the first I have heard of that biasing problems can occur if used with the C4 rotor. Maybe thats why I haven't seen a kit out there with the LS1 calipers.

So, since the LS1 and C5 abutment brackets are the same as MR.Quick stated, that would mean that I am {still} searching for an 'image' (I'll stop calling it a template) of the 'conversion bracket' to mount the C5 calipers to my 1st gen drum spindle. By "image" I mean a CAD, dxf, jpeg, gif, tiff etc, drawing with dimensions. I'm sure I'm not the only person to do this without the aid of the online vendors...or am I???

Thanks again for the help
Billy

[Hammered]

I think that if you read closely, the abutments are not the same. Either caliper will work with either abutment, but the abutments are specific to the rotor/spindle combo. Plus the mounting threads are different.

You can buy:

C5 Caliper/C5 Rotor brackets from:
www.kore3.com
http://www.speedtech-performance.com
and others

C5 Caliper/C4 Rotor brackets from:
www.touring-classics.com

LS1 Caliper/LS1 Rotor brackets from:
Rich Hoag on this board (can't remember forum name)
http://www.brphotrods.com/parts.html

I'm in the process of making my own front and rear LS1 brackets. I've got the rears done but am still working on the fronts. I wanted something different from what is offered by BRP up front.

Your best be for 17" rims is Touring Classics. Download their template and if you can't make that work with a modest spacer or mods, then I would go the LS1 route.

[billybobdupree]

I'm in the process of making my own front and rear LS1 brackets. I've got the rears done but am still working on the fronts. I wanted something different from what is offered by BRP up front.

.

After talking to just about all of the vendors, I've decided to go with BRP (front and rear brackets) because:
1, I already have all of the LS1 stuff from a donor car.
2, I would not invest my time in creating a bracket for the price that Phil sells them for.
3, keeps everything simple/common in case theres a problem- Front and Rear LS1 including parking brake.

but on the other hand, if I had the C5 callipers, I'd go with Speedtech, just my opinion

:confused:But please help me understand Mr. Hammered, why are you recreating the front bracket? What in your opion should be different about the bracket?

From what Phil Brewer told me, it is a bolt on part. No need to trim down the top of the boss on the drum spindle.

Billy

[jonnyc]

[quote=billybobdupree]Well kinda...
Incase you haven't figured out the "lingo" yet, we are refering to
f-body's with LS1's as "LS1 calipers" and C5's as "C5" calipers.

But, Yes jonnyc, you are correct in stating that both cars have LS1's.

yes i know the lingo.i was just think thats some people might get confussed as to what ls1 calipers are.thats why i suggested refering to them as f-body and c5.
and yes, i know that the f-body lt1 and ls1 calipers are different also.

[Hammered]

Billy,

The last time I spoke to BRP they had no good provision for the parking brake plus I have bearing retained axels instead of c-clips. Thus, I designed and made my own brackets that both retain the axle and provide a cable mount.

On the front, I didn't like the idea of grinding the spindle boss and I also wanted to run a different offset hub so there again, I needed to design and build my own brackets.

Both my fronts and backs can be easily adapted to standard offset hubs and a c-clip rear, respectively.

John

[billybobdupree]

Billy,

The last time I spoke to BRP they had no good provision for the parking brake plus I have bearing retained axels instead of c-clips. Thus, I designed and made my own brackets that both retain the axle and provide a cable mount.

On the front, I didn't like the idea of grinding the spindle boss and I also wanted to run a different offset hub so there again, I needed to design and build my own brackets.

Both my fronts and backs can be easily adapted to standard offset hubs and a c-clip rear, respectively.

John

I totally understand now what your doing and your situation.
You don't have to grind the boss on the spindle anymore, from what BRP told me. I'll get pics up when they get to me later this week but I'm sure they probably look like everyone's.
But just to let you and others know, the complete LS1 rear brake assy is bolted to the 1st gen with the use of an inexpensive bracket from BRP. So the e-brake works the same way it does on the LS1 car. You even use the factory e-brake cables!
And in my situation, I am using the DSE 4 link, so I have nothing in my way as far as shocks are concerned.
Billy

[zman1969]

LS1 Caliper/LS1 Rotor brackets from:
Rich Hoag on this board (can't remember forum name)
zman1969


that would be me! please PM or email me [email protected]
I still carry these brackets

[1badchevelle]

Not to high jack the thread but I have a c5 rear caliper and a ls1 backing plates w/ e-brakes, what else do I need to make this work? This will be going into a 71 chevelle w a 12 bolt rear? I would like to go with a kore 3 set up but dont have the $$$ and since I have these parts I would like to use them. I know kore 3 makes a bracket w a e brake provision will that work with the e brake as well or who make a bracket that I can use the parts I have since they are new?

[MrQuick]

The rears in your case are different. The caliper on the one is threaded so the bolt passes through the bracket and locks into the caliper where as the other is threaded on the bracket and the bolt passes through the caliper ears. Does that make sence?

[1badchevelle]

Mr quick was this for me?

[MrQuick]

yep, thats all you boss. Sorry, I had thought I had quoted you.