Re: Xschop's 5.3 LM7 build

LEEEZARD7 Mon Nov 12, 2012 7:59 pm

it has been done.

kevin924kevin Tue Nov 13, 2012 7:40 am

It takes a little bit of work to install the vette trans. I am in the process of doing so, but still using the porsche running gear, where Admin is using the vette suspension complete in the rear. A little cut here and cut there, but it will be worth the effort in the end for the low rpms at hwy speeds. It also allows a host of easy to change gear choices.My trans is a 342 but will change to the 271 for hwy cruising.

docwyte Tue Nov 13, 2012 8:47 am

In looking at your thread it looks like alot more than a little cut here or there!

Lots of fabrication work, it'll give a good result, but it's far past my abilities and I don't feel the gains are worth it for me to pay someone to do it for me.

xschop Tue Nov 13, 2012 9:43 am

Fact: The Vette 6-speed turns 1475 RPM doing 70mph WITH 3.43 differential. This is why I'm starting the 926-LS build soon. Stronger trans better gears for the V8 and 930 axles to boot. Very Happy

The 944-Vette trans takes dedication and time. I like what Kevin is doing and keeping the 944 suspension.

acorad Tue Nov 13, 2012 11:22 am

That Vette 6th is tall!

My 0.68 5th from a mid-80's Audi 5000 diesel gets me about 2200 at 70mph. iirc, I think I was at 2900-3000 with the original Turbo 5th.

kevin924kevin Tue Nov 13, 2012 4:39 pm

Just imagine how low the rpms will drop with the 271 ratio. xschop sorry this should not be clouding up your thread.

LEEEZARD7 Tue Nov 13, 2012 5:35 pm

whomever is purchasing robs car is a lucky guy. nice ride.

LEEEZARD7 Wed Nov 21, 2012 11:51 pm

GOT A RIDE IN THE 948... NICE!!! SHOWED UP A OLD GUY IN A VETTE LOL.

watsondk Wed Nov 28, 2012 7:19 am

LEEEZARD7 wrote:whomever is purchasing robs car is a lucky guy. nice ride.

I fly in next weekend for the car, super excited. As I make my own modifications to the 948 I will keep updating this thread, I have a few ideas already Very Happy

LEEEZARD7 Thu Nov 29, 2012 11:16 pm

have fun with it watson!

xschop Tue Dec 04, 2012 9:26 pm

xschop wrote:Sorry, As of July 3rd, still no harness, VSS kit, nor Oil Filter Relocation kit from Greg....

My SSP harness is installed and done..... and I've ordered a filter relocation kit from Ebay....after that I can drive it to the exhaust shop..... I will build my own Billet VSS kit later......

Hey Billy, do you know if this car ever had a factory alarm?

I also disconnected the Green/blk hot wire directly at the rear fuel pump with a long wire lead to read continuity of the circuit....confirmed that it goes and connects to DRIVER'S SIDE of FUSE #34....So as I suspected, you either remove fuse #34 and use a single spade to jump it OR the Green/Blk wire at the 14-pin connector ties in under the fuse panel Very Happy (which is what I did)...

For the new PCM relay, I simply added a jumper connector (ON DRIVERS'S SIDE).... Wink

The fans were easy. Just tied in to the large RED/blk and Black/red wires in the loom right next to the driver's side strut tower.....
.................No More Porsche DME/Fuel pump relay or Fan relays........Happy Independence Day!

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LEEEZARD7 Tue Dec 04, 2012 9:47 pm

the 30 86 87 85 relays are fairly generic and can be purchased as vw rabbit fog light relays very inexpensively. my .02

964ruf Fri Sep 20, 2013 1:50 am

hey rob, hows it going? mike in piedmont here. give me a shout.

watsondk Fri Dec 12, 2014 10:15 am

Been a while since I last posted, my good friend just wrote an article on my 948, check it out and see if we can get one of our cars to the Jalopnik front page!

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xschop Fri Dec 12, 2014 5:51 pm

Dinsdale and I will make front page with the Twins.

TampaPete Sun Feb 22, 2015 8:14 am

XSCHOP. what did you end up doing on your brake conversion for front and back? THanks

xschop Sun Feb 22, 2015 8:32 am

I made some adapters to put RX7 calipers on the rear. They work great with factory 951 rear rotors, you just have to trim a small area of the caliper to fit.
I have a set of those adapters if you're interested I'll let go for $115 shipped.

TampaPete Sun Feb 22, 2015 10:35 am

That sound good. Let me know how I can get you the money and I pay, send a check or whatever for them. I will also send you my shipping information. THanks

xschop Sun Feb 22, 2015 11:22 am

My PayPal is [You must be registered and logged in to see this link.]
Just search the thread here.

211lotus Sun Feb 22, 2015 7:20 pm

Rob,

If possible could you PM me with your new contact information? (211lotus) My project is just getting started after I purchased your adapter and motor mounts two years ago. I have a question regarding the size of bolts to used to attach the bellhousing to the adapter and the adapter to the torque tube. I tried your e-mail but it wouldn't go through.

Brian H.

TampaPete Mon Feb 23, 2015 7:07 am

Please PM me your mailing address and I will send you a check. Will that work?

xschop Mon Feb 23, 2015 7:43 am

Hey Pete, sent you a PM. That'll work. Take care,Rob
If you need anything else, my email is
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On my C5 adapter plate, you need 7/16-14 tpi Allen studs that are 1.5" long.
The BH bolts IIRC take M10x 1.5 x 40mm long

TampaPete Sun Mar 22, 2015 10:43 am

Can you PM me your address again so that I can send you a check for the RX7 rear brake caliper brackets. Thanks

Xschop's 5.3 LM7 build