Tal Ben Avraham

Hi

im new to this forum.
i add to my c7 zo6 many upgrades :
416 strocker short block forged from texas speed
AMP heads
procharger F1X 20 psi boost
on Dynojet (hubs) dayno i have about 1200 Hp
the carnckshaft im using is: Callies Magnum 4.00"
Stroke Gen 5 LT1 Crankshaft, Dry Sump
last night the front pulley (original one ) was cut like u see in the pics
does it happen to anyone ?
any suggestions what to put ?

Drew27

Try calling Redline Motorsports in South Florida..


Is your car a A8 or stick and how is the fueling?

T/A KID

Why are you using the factory crank pulley on this build... go ATI or IW

schpenxel

IW or ATI

/problem

Tal Ben Avraham

The car is Automatic 2015
for fueling im using extra fuel line with external bosh 404 pump + Alkey meth kit

driving 93 octan

Redline Motorsports

Looks like the balancer got loose or the key in the keyway was incorrect.

At 20 psi the load on that balancer with a F1X is quite high.

HT

Tal Ben Avraham

can u tell me what i have to order ?
i need it same size as original size

im using today Callies Magnum 4.00"
Stroke Gen 5 LT1 Crankshaft, Dry Sump

so its has Double keyway

i waill also need the 2 keyway

im from Israel and im the only one with such car so dont know what to order

thanks allot
Tal

Redline Motorsports

What does the end of the crankshaft look like?

Tal Ben Avraham

there are 2 place for keykey 180 degree 1 from the other

robert miller

Man this much money in a looks like a really good build and not spend less than 600.00 more $$ on a part that has been proven in the past to go bad are pull apart.

Tal Ben Avraham

Im from Israel . we dont have racing and Drag here
im the only stupid one who build something like it here
i spent over 70k upgrades here this car only cost 190k ( we have 200% tax on cars )
believe me if i knew that i need it from the start
it was there

the only problem is because im the only one here with such car so i cant learn from no one mistakes.....
also when i ordered the f1x procharger kit no one there told me i need something ales to change
:-)

but thats life

:-)

schpenxel

At least the crank doesn't look chewed up

RpeterK

I do believe but will look in the AM to verify that the Z balancer hub is aluminum. Not the outer ring but the hub its self. So that would explain the failure. Been about a year since when i took dimensions off it.

RpeterK

I did look at the Z balancer and it is as I remembered aluminum. Only the inner part which includes the crank hub. This would explain the failure and it looking like it does.
bob

Drew27

Did you get it fixed?

WuTang

Off topic but where'd you get a built 416 for the C7