Build Thread: Addicted to L67's~updated 4/6/2013

[88formula]

FWI, Ported TB, ported blower with block off plate, polished heads, EGR, EVAP, AC, and PS delete, low mount alternator with 15% underdrive, XP cam with #105 springs and titanium retainers, new stock timing chain and dampener, ZZP shift kit, #60 injectors, drilled 180 tstat... I know I am forgetting something but that is what I can think of off the top of my head, this coming summer I plan on getting a E85 tune.

[ctracer]

how come you havent opened the manifolds?

[DanPrixGTP]

Where da headers at?!

[TLSheff]

He's not running poly mounts though he's running a solid metal motor mount. Won't the motor being connected to the body cause vibrations in turn causing KR?

What do you suppose the motor is sitting on? It surely can't just be supported by those 2 bars and nothing else. Those bars are just to replace the non-existant dogbones in fieros. That is why he called them torque bars, keep the motor from flopping when he gasses it. Once bolted tightly it shouldn't rattle or cause KR, but I suppose anything is possible.

[dsmuts]

Ok I guess that makes sense. I just didn't know how sensitive the knock sensors are.

[88formula]

Unless that is a hefty cam and you just didn't show pics of the headers you plan to put on, that 3.25 is WAYYYYYYY too small.

Nice job on the ports tho, for first time by hand they look pretty good.

Can't wait to see where you go with this.

BTW if you didn't read this, give it a good look over. May help save you some headaches and give direction.
http://www.grandprixforums.net/safel...0-a-67580.html

Thanks A Lot, oh and I think I have that "safely modding your 3800" memorized from how many times I have referenced to it! LOL

What do you suppose the motor is sitting on? It surely can't just be supported by those 2 bars and nothing else. Those bars are just to replace the non-existant dogbones in fieros. That is why he called them torque bars, keep the motor from flopping when he gasses it. Once bolted tightly it shouldn't rattle or cause KR, but I suppose anything is possible.

The motor/trans are mounted to the cradle with all solid mounts, besides the front. It has a rubber core. Fieros did have dog bones, but it was already removed when I got it, and it did not line up with the 3800, plus it looked flimsy as hell! Before I put the solid torque strut in the motor would rock almost 3 inches during WOT, and the alternator pulley would hit the strut tower, now it barely moves maybe 1/2 inch.

Where da headers at?!

Waiting for my Speed Daddy's to arrive!

how come you havent opened the manifolds?

Not sure what your referring to?

Sweet build man.

Whats the full plans with this Fiero?

Make it a fun/fast/daily driver with some weekend track time, hope I dont kill the transmission too soon, and next blackfriday ZZP has get intercooled/ported heads/built trans/smaller pulley.

[88formula]

My new OEM Corvette C6 exhaust tips arrived today! Still waiting on many more black friday purchases to arrive...

[REDCRAPGP]

Nice!

[88formula]

This is the exhaust sound I am hoping to get. Have been unable to get ahold of this Fiero's build sheet...

[siLversLeigh]

nice welds

[FoSHO99]

nice tips

[88formula]

nice welds

Thanks! They do say you tend to be good at what you do for a living :P

nice tips

Thanks! Cost me less then $60 shipped on black friday!

[carl06GT]

Where did you order the tips from?

[88formula]

Where did you order the tips from?

They are like new tips that were removed from customers cars that went with aftermarket exhaust systems. Mine had very very minor scrapes on the bottom, nothing you would ever notice. No carbon buildup whatsoever! They were 15% off black friday, now they cost around 70$ I measured the pipe at about 1 3/4 ID inlet and tips about 2.5ID, but the inlet can be cut up into the Y for up to 2.5 pipe, that is what I plan on doing anyways. Also about 8" length as shown.
05-11 Corvette C6 Stainless Exhaust Muffler Tips PAIR | eBay

[88formula]

Been working on the heads, and finished one last night. ready for assembly once all my new parts get here.

Heads disassembled


Before cleaning


After cleaning


starting to port


exhaust bowl

in progress

pretty much finished



in progress

finished (dont mind the rust color)


before

after


before

after


Bench flow testing shows these results.

Intake:Lift Cfm (stock) Cfm (polished) Gain
.0 2 2 0%
.1 53 55 2.8%
.2 112 113 .06%
.3 147 150 2.0%
.4 171 172 .05%
.5 180 183 1.6%
.6 180 185 3.2%

Exhaust:Lift Cfm(stock) Cfm(polished) Gain
.0 2 2 0%
.1 47 47 0%
.2 96 103 7.2%
.3 116 133 15.1%
.4 130 151 15.9%
.5 136 157 15.1%
.6 137 157 13.8%

Also got some more goodies in today from ZZP!

Transmission pan gasket for when I install the shift kit, and GM aluminum intake gasket!


High output water pump, aluminum coolant elbows, Comp Cams valve spring locks, and some install accessories!

[98buicksupercharged]

this this this is awesome

[88formula]

L67 Fiero launch - YouTube

L67 Fiero fly-by - YouTube

Pontiac Fiero Supercharged L67 - YouTube

Some videos from when I first got the car drive able with the motor in stock form.

[88formula]

My rubber, with 8" of contant surface.


extra sticky Yokohama's


all new poly bushings, and shocks front and rear



some random parts, some finished.


The look I am going for when I stomp the gas! LOL

[ctracer]

how hard was the swap? did you have to do custom anything?

[Joma]

Very nice man! I wish I was mechanically inclined to be able to do something like this.
I also have to tell ya, very nice welds!!

-Jo