My 408/T56 Build Thread

qwikcobra

New Member
Jun 1, 2003
12
0
0
Mooresville
Thought I'd post up my build here she is on the stand in mock up right now

370837697.webp


Specs:
Engine
74' Block
Eagle Crank and Rods SRP Pistons
Victor Jr. Heads no port work
Comp XE270HR Cam
Vortech Igloo intake
TFS-R Lower
Vortech S-Trim for now T or Si later on
Trans:
Viper Spec T56
Spec Twin Disc Clutch
Fuel:
Aeromotive Stealth A1000 Fuel System
FAST XFI Fuel Injection complete rewire

Plus also did a complete underhood/underbody base/clear paintjob and powdercoated almost everything else.

Going in this car

94' Opal Frost/Red Interior

69629258.webp


Should be running in 2-3 weeks I'll post up some more pics when I get them uploaded
 
Slowww! :nice:


KIDDING, for sure man. That build looks to be flat out nasty! Can't wait to see the progress, definitely keep a great log on this one, because I'm interested. And hell, you should be FINE with just the S-trim! :rlaugh:
 
Slowww! :nice:


KIDDING, for sure man. That build looks to be flat out nasty! Can't wait to see the progress, definitely keep a great log on this one, because I'm interested. And hell, you should be FINE with just the S-trim! :rlaugh:

he could spin the hell out of that s-trim and maybe get 8# of boost lol....

in a perfect world, they only flow enough air for 680 horse....

I say YSI :)
 
YSI would be nice if I fall on a deal on one I will do that later on. An Si upgrade with a straight volute and A2A intercooler will be more cost effective for a street car setup like this. But I am way over budget as it is so that will have to wait too.

Here is a cool before/after on the under side paint the rest of my pics are on my work computer.

362987060.webp


362987062.webp
 
Never cared much for turbos I don't like to wait for the power to come in or having to deal with the maintenance on them. Just personal preference I guess.

Here is a shot of the Aeromotive Stealth Sump in the stock tank which has the A1000 pump and prefilfter in the sump.

371155904.webp


and the nearly completed motor on the stand

371163356.webp


Just waiting on a different balancer hub so I can get my belts sorted out. Then its ready to go in
 
It's alive but not well acts like a mega vacuum leak or something. I have to give it a lot of throttle and 3-4 times the necessary fuel to hold 900rpm and it breaks up past 1500. It doesn't pull hardly any vacuum. I have a MAP based FAST XFI system

Have checked and rechecked everything tune wise

timing is correct
compression good 140-150
all cylinders firing
fuel pressure holding 40psi
all injectors are firing
plugged off all vacuum lines (no change)
verified low vacuum on computer runs 89-90 kpa holding steady 900 rpm
or about 4in/Hg of Vacuum as read on vacuum gauge
blower is disconnected

I am going to mess with it today, gonna pull off the intake and reseal it. the gasket on one side looks maybe a touch high (looking inside the port).
If this is not it I think I will have to take it somewhere for a second opinion.


I wanna drive this thing dammit :mad:
 
I had a huge vac leak when I fired my motor for the first time. We found out where it was by pulling the vac line off the brake booster and blowing smoke down the tube. Smoke started pouring out from under the upper intake manifold and it turned out it was a bad seal between the upper and lower.

The smoke machine was a something my friend had at his shop that he used for emissions testing...a lot cleaner than spraying carb cleaner all over the place.

Good luck
 
We found out where it was by pulling the vac line off the brake booster and blowing smoke down the tube.
Good call on the smoke, we use that at work too. And like you said, alot cleaner than using liquid.

Sounds like the intake manifold to me too, maybe a gasket moved when it was installed or something dumb like that???