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Great info. I am looking for a rotor that is machined on the inside so I can use it on the outside of my hub. The 01 Chevy is this way but I cant get a wilwood caliper for the 1.5" rotor. My theory behind the wilwoods is a great caliper with 4 pistons so I dont have to use a huge master. The 97 dodge is cast inside so I would have to machine it to work adn I am looking for a simple rotor swap. These are going on a Volvo axle also. Is the chevy rotor machined inside?

Toddy
By 2001 Dodge used a slip-on rotor on the CTD trucks - still 1.5" thick.

99+ E350 rears are slip on also, but thinner. E450 rear rotors are 1.5 thick. Dunno if they slip on or not.
 

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Got a 01 2500 Suburban rear rotor to work. 1.25 think right at 8" inside and 3.100" inches from inside face to the back face of the rotor. I will post up more when I get it all together.

Toddy
 

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Hope this isn't a Hijack, but I'd like to resurrect the discussion on the P30 callipers or something similarly sized.

I know there were fitment issues with 16 inch wheels, but from looking at them, it seems they might work in my application.

looking at using them on a Ford HP60 with DRW hubs, and stock H1 rims.

Any insight on this? They look like they just miss fitting on the rims tested.

Thanks
Doug
 

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P30 calipers are the same as GM/Dodge D60 calipers.
Actually, I misspoke. it is the Rotors that I was interested in, not the calipers.

Thanks
Doug
 

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Discussion Starter · #67 ·
the sitment problem was on a 16.5 if i remember correctly... it was also a factory wheel... most likely like 5 inches of backspacing... it depends how fast the wheels step down inside...

might fit, might not

dc
 

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Hey thanks for the info on the P30 rotor, Im putting a Dana60 under a 92C3500 and im going big on the rotor. Im gonna use an 18 inch wheel- that should have plenty of clearance right? I have thoughts of monster calipers from C6500 or F550, I will report back after research.
 

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No, these:
Ok...not a bad deal at $59 each from NAPA.
http://www.napaonline.com/MasterPage...oaded)+-+Remfd
http://www.napaonline.com/MasterPage...oaded)+-+Remfd

Their part number is SDC2422224 / SDC2422225

They list the pistons at 2.6" for RAYBESTOS Part # FRC11031 (RockAuto)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Ok , All these above refer to the same type of caliper right? Dual 2.6 inch piston. I have been searching autoparts sites and havent found anything showing a mount bracket for these. Have any of you seen a bracket? Pic? The pics of the caliper show it is a strange design compared to other gm stuff. These are used on the 15K gross weight C3500 wreckers, cab and chassis and such 95-2000 -not all of them many variables.

Rock auto also says 97-99 P30, 97-99 P35,3500.

The large 2.6in piston dia sounds killer, compared to a previous post that mentioned 2007 Dodge 3500 diesel calipers and I looked them up and Rockauto says 2.2 inch pistons. I would think that .4 in dia bigger on 2 pistons would make a big difference in braking force.

Each 2.2 in piston area = 3.80 sq in. Each 2.6 in dia= 5.30 sq in. Unless im goofing up I think that is 39% greater piston area on the chevy caliper. Area Caculator - http://www.1728.com/diam.htm
 

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Was able to find the Cardone part number 18-8044 and you can put that number in the search on Oreillyauto and it comes up and has more pictures. I will try to link to it-


http://www.oreillyauto.com/EW3/Prod...d=1219212510255&cycleCount=1169&currentPage=0

I will go to the chevy dealer and look up brackets and get a print out of the diagram and pricing. Will be interesting cause looking at the pics I dont see how the hell the caliper is attached. Must be pad guided caliper eh? Bracket holds the pads and pads hold the caliper.
 

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If Im not mistaken, steve gerstner already has this figured out, could be wrong, but I believe he offers it on his dana 70 dana 80 fronts. if not ignore
 

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Well I saw a parts diagram at the dealer showing those P30 calipers and its a complete cluster F. It has some kind of slide in wedges that hold the caliper into a weird ass bracket and a funky flat wound spring that holds the pads and no way im using them.

So looks like im gonna try the 99-04 F450,F550 calipers, they are easily available with the nice simple mount bracket.
 

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So these:

http://www.autopartsway.com/acp/Details.cfm?ID=R42FRC11008

http://www.autopartsway.com/acp/Details.cfm?ID=R42FRC11007

these:

http://www.autopartsway.com/AutoParts2/index.cfm?fetch=altPart~ID=W0133-1623710&partnumber=W0133-1623710

and a pair of brackets, set of pads and some homebrew bracket mounts and these should be good to go on my 14b build right? Has anyone confirmed that the brackets for the ford F-550 fit the discs for a Chevy P30 at 1.535"?

For about $275-300 (depending on pads) shipped, that's a sweet deal for those monsters!:eek: Too bad the P30 calipers did't work out though.....18% more piston area:(
 

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Soooo... does anyone have pictures of this P30 rotor and F450 caliper combo installed yet? And can you verify that 17" wheels fit?
 

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Those P30/3500HD (wrecker package) calipers mount to a bracket that's the same style as Dodge/GM D60 fronts... only sized for the larger rotor and a larger bolt circle on the axle tube. I used to have a picture of these things.

Some other info and questions...

- The Ford E-350 DRW and E450 rotors are not slip-on. The E450 one doesn't have the drum-in-hat. I looked at doing a Ford version of what Mechanos has done to his fat-ass 14-bolt. It's WAY more spendy than Dodge.

- Dodge rear discs assemblies are the same for SRW and DRW. I suppose that makes sense due to the large backspacing the SRWs have anyways.

- How do the Dodge 01/02 rear disc assemblies compare with 03+? The little bit of digging I've done suggests its all been resized for the ~1" larger rotor. The 'style' appears the same.

- There's some striking similarities between Ford, GM, and Dodge rear discs. Anyone tried swapping parts & pieces around? Part numbers on Napa and Rockauto vary, but that could be something silly like the inlet fitting in a slightly different spot or a different thread.
 

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back from the dead did anyone ever get the p30s to work on a dana 60 front?
 
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