Build thread, Triple Turbo 6.7L Race truck build

Dzchey21 · Oct 31, 2014

60 foots were still in the 1.5s but obviously for a low 10 you would like to see 1.4x times if not better. Slicks will help but i dont think 4 link will help that much.

jcain · Oct 31, 2014

Slicks will probably hurt et. I think they're on the right track going to a dr

Jonnydime · Oct 31, 2014

Do it like the Ams Gtr with slicks on the back but more of a street tire in the front. Does anyone know how much the weight transfers on a 4wd truck? If you can get the rear end to hook you only need the front to launch so why not run a lighter more narrow tire in the front?

Craig@MFI · Oct 31, 2014

We will Probly be back halfing it will a custom rear but will still be keeping 4 wheel drive as well

6 L chevy eater · Oct 31, 2014

any news on the extent of damage to the motor?

Dzchey21 · Oct 31, 2014

Jonnydime said:
Do it like the Ams Gtr with slicks on the back but more of a street tire in the front. Does anyone know how much the weight transfers on a 4wd truck? If you can get the rear end to hook you only need the front to launch so why not run a lighter more narrow tire in the front?

Craig@MFI said:
We will Probly be back halfing it will a custom rear but will still be keeping 4 wheel drive as well

It transfers alot more than you would think. The 4wd portion is just more forgiving when things or the track don't hook like they should.

IMHO craig is making the right move staying 4wd and back half to get the rear tires inward and planted better. Obviously 2wd would cut serious weight but is it worth it? Depends if you ask me.

Six_Sloww · Oct 31, 2014

The only reason these trucks don't seem like they transfer weight is because they weren't designed to.. The truck was designed to resist squatting, but with a back half you can adjust that however you want with coil overs

Jonnydime · Oct 31, 2014

Just to be clear I was not suggesting going to two wheel drive. I was just suggesting running a narrower lighter tire on the front and a slick/drag radial on the rear.

Bobby@MPD · Oct 31, 2014

Usually a narrower tire is taller, so we wouldn't gain much because than your trying to throw around more rubber.

Dan · Oct 31, 2014

Dzchey21 said:
Not that it needs to but do you think it would rev out further. Bearings say it will

Just for reference: my setup, shift points were set at 4700rpm and saw as high as 5000 rpm... For my particular truck with the cam it had, it was starting to come alive at 4k+ rpm on the street. i have not seen a dyno sheet to tell where peak power is being made, that's just by feel! Rpm ftw

Mike@MPD · Oct 31, 2014

That is a horrible can setup for a street truck. That's crazy rpm for what reason lol. Craig did bring his over 4300 on a few pulls on the dyno

Dan · Oct 31, 2014

Mike@MPD said:
That is a horrible can setup for a street truck. That's crazy rpm for what reason lol. Craig did bring his over 4300 on a few pulls on the dyno

It's exactly what I wanted!

It would be interesting to know whether a cam change and an extra 500 rpm would get you to the end of the track quicker, or if it would make no differance

madman1234509 · Nov 1, 2014

Dan said:
Just for reference: my setup, shift points were set at 4700rpm and saw as high as 5000 rpm... For my particular truck with the cam it had, it was starting to come alive at 4k+ rpm on the street. i have not seen a dyno sheet to tell where peak power is being made, that's just by feel! Rpm ftw

I HIGHLY doubt your cam had anything to do with you're truck feeling as if it came alive above 4000 rpm. I'm sure it had everything to do with how crazy big your high pressure turbo is, and then the atmosphere on top of it. A cam causing one of these trucks to feel like it has a significant amount of more power up top in the range you're stating, is a cam that you're looking at strictly sled pulling or drag racing the truck, because it wouldn't be street friendly at all.

Dan · Nov 1, 2014

You're right, cams have nothing to do with anything...

Carry on psa

Jbenso127 · Nov 1, 2014

Dan said:
You're right, cams have nothing to do with anything...

Carry on psa

Because that's what he said. Right.

How's the weather in fantasy land?

Craig@MFI · Nov 1, 2014

madman1234509 said:
I HIGHLY doubt your cam had anything to do with you're truck feeling as if it came alive above 4000 rpm. I'm sure it had everything to do with how crazy big your high pressure turbo is, and then the atmosphere on top of it. A cam causing one of these trucks to feel like it has a significant amount of more power up top in the range you're stating, is a cam that you're looking at strictly sled pulling or drag racing the truck, because it wouldn't be street friendly at all.

Both of my turbos are bigger than dans and have Bigger exhaust housings and spool perfect and normally a cam does move your power around and make it laggy in lower rpms... If dan would have went with a colt cam design he Probly would have alot better results

4EverBoosted1 · Nov 1, 2014

Craig@MFI said:
Both of my turbos are bigger than dans and have Bigger exhaust housings and spool perfect and normally a cam does move your power around and make it laggy in lower rpms... If dan would have went with a colt cam design he Probly would have alot better results

Dan an I have the same cam... My truck makes all of its power before 3500RPM...