MastMotorsports

The fuel cell has the outlet on the wrong end of the tank. It still works fine, it is just inconvenient to keep the truck half full of fuel. We are going to install some fuel cell foam in the tank and see how that helps our issue. I'll post them up whenever we have some results.

kevin99hoss

iTrader: (4)

is there also a digital speedo to i can't figure out why the speedo only reads up to 80?

PSWired

What vehicle did that throttle pedal come from? Would you happen to have a GM part number?

I have a (somewhat) similar project:

http://www.pacificp.com/forum/viewtopic.php?t=6034

MastMotorsports

Yes, there is a digital speeometer readout...just in case you feel the need to break the speed limit.

MastMotorsports

That is a C6 Corvette foot pedal that we send with all of our crate engines. We have found that it is the most affordable solution. It does have a foot plate from a 71-72 truck. It worked out really well because it fit right into the place of the stock Corvette piece.

BTW, your swap looks really interesting. Is that your primary build thread? I would like to keep an eye on your progress.

WhiteS13

iTrader: (2)

So so clean. Amazing!

themachasy

iTrader: (5)

I wanted to also know if your m90 ecu controls the 6l90e, 4l80e, and 4l60e. I think one of your L92 VVT HO motors is in my future!

Thanks!!
Josh

rsz288

Excellent build up. Congrats on this and the mastery of VVT, AND the MAST M90 ECM. That is a masterpiece. A lot of work to get that to market!

At the start of the thread you mention that the MAST ECM interworks with the TCM in the 6L80/90. Is that interworking to the same degree as i.e. a GM E38 controller?

Also with the CAN gauges, is this a MAST specific CAN, or is it compatible with current GMLAN? i.e. to work with a Dashhawk, Dashdaq, PLX devices gauges as well?

Cheers.

MastMotorsports

Josh,

We have solutions for all of the transmissions that you listed. You just have to let us know what route you want to go. 4L60/80s have different requirements than 6L80/90s.

MastMotorsports

The transmission controller is actually in the transmission on this setup. We are currently developing the features of this transmission for our engines and EFI systems. The only feature that we probably won't wind up accomodating is the torque management which is preferable for aftermarket use.

The gauges in this truck are SAE J1939 which is pretty standard in other applications. We are working on making our controller run GM stock factory gauges. (GMLAN) Once we do this, I don't see any reason why it wouldn't run the aftermarket devices that you listed.

MastMotorsports

Cooling System Installation

The cooling system was pieced together out of relatively inexpensive components but still yielded excellent results. The radiator is a Jegs universal fit (555-52009) with Summit fans (SUM-G4852). The bottom of the radiator sits factory heavy duty radiator mounting brackets and pads that are welded to the core support. We had some aluminum bent at a local sheet metal shop to attach the fans and radiator to the core support. The aluminum plate bolts to the core support and to some bungs that were welded to the top of the radiator. When bolted together the fans are trapped in and don’t move at all. The fans are wired directly into the Mast Motorsports Engine Harness, no other fan relays are required!!!

















The lower hose is NAPA P/N: 8025, while the upper hose is a Gates P/N: 22436. If we had it to do over again we would try a Jeg’s double pass radiator (555-52039). This would put both the inlet and outlet on the passenger side and eliminate the upper hose from having to go all the way across the vehicle.

Hmbre97

What's stopping you from just turning the tank around?

rsz288

Thanks Shaun!

re-evaluating

Love the build. I have a question what are the gear ratios of the GM 6L90E? Depending on what they arelooks like it might just do the trick for my swap (I haven't researched that yet) Thanks Dave

MastMotorsports

The tank has a pretty aggressive upward slant toward the rear of the vehicle. See post #10.

MastMotorsports

Thanks Dave! The gear ratios are as follows.

1st---4.03
2nd---2.36
3rd---1.53
4th---1.15
5th---0.85
6th---0.67

They allow you to gear your vehicle numerically low and still have good acceleration from a dead stop.

re-evaluating

Thank you very much looks like the overdrive isn't to bad either. My swap will be in a 3000 lb car with 3.55 gear (nothing else available but 4.10) so first will be really quick. What kind of RPM are you turning at 70 mph? You said you have 3.08 if I remember so I can calculate back with that and tire size if you would be so kind? I would like this thing to get decent mileage if I can keep my foot out of it. Thanks again Dave

MastMotorsports

Dave,

At 70 MPH, the truck is right around 1750 RPM. You will still see good mileage numbers with the 3.55.

70LS1Nova

So, did you put the foam in the fuel cell? Did it work?

MastMotorsports

Yes we did. I would say that it made the problem bearable. It made it better, but it would take proper baffling to cure the problem completely.