255 Upper Pulley - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

jvervoren · 09-30-2019, 12:41 PM

Is anyone running a 2.55 upper on stock injectors? I had a buddy of mine tell me I had to get bigger injectors for a 2.55. I thought I heard you can roll stock injectors though. I thought 2.45 and lower needed injectors.

JANNETTYRACING · 09-30-2019, 02:31 PM

Quote:

Originally Posted by jvervoren

Is anyone running a 2.55 upper on stock injectors? I had a buddy of mine tell me I had to get bigger injectors for a 2.55. I thought I heard you can roll stock injectors though. I thought 2.45 and lower needed injectors.

2.55 is 18% overdrive on the blower

Stock injectors will only support a max of 10% overdrive

You need injectors and a tune.

jvervoren · 10-02-2019, 08:37 AM

Quote:

Originally Posted by JANNETTYRACING

2.55 is 18% overdrive on the blower

Stock injectors will only support a max of 10% overdrive

You need injectors and a tune.

Thanks!! I suppose doing a pulley that doesn't require injectors probably isn't worth it anyway then?

JANNETTYRACING · 10-02-2019, 08:43 AM

Quote:

Originally Posted by jvervoren

Thanks!! I suppose doing a pulley that doesn't require injectors probably isn't worth it anyway then?

Our 75 RWHP package is very impressive change, makes the car feel more balanced we have sold and installed Hundreds of these packages and everyone reports back with big smiles and praise.

We never recommend changing the upper pulley all should be down with lower pulley.

Ted.

Vegas Bound · 10-02-2019, 09:22 AM

Do a 2.55/9.5 and have a big smile.

JANNETTYRACING · 10-02-2019, 10:16 AM

Quote:

Originally Posted by Vegas Bound

Do a 2.55/9.5 and have a big smile.

I know you are just having fun, and you do not intent any harm with this but it is these light hearted comments that lead people in the wrong direction.

Possible result, Stupid high IAT, an overspeeded blower and a broken engine from too much boost on low octane fuel

A recommendation like this needs to include all the details so as not to mislead someone.

For something like this you would need

Rotofab
LT headers with high flow exhaust
Cam Package
Blower Porting
102 Throttle body
TR7IX plugs
MSD wires
Crank case breather
Fore innovations fuel fuel pump fuel system with return
ID1300 injectors
E-85 fuel or Race gas.
and very competent custom tuning.

Ted.

JB'sZL1 · 10-02-2019, 10:22 AM

Quote:

Originally Posted by JANNETTYRACING

I know you are just having fun, and you do not intent any harm with this but it is these light hearted comments that lead people in the wrong direction.

Possible result, Stupid high IAT, an overspeeded blower and a broken engine from too much boost on low octane fuel

A recommendation like this needs to include all the details so as not to mislead someone.

Ted.

Yep. Another recommendation to spin the blower at 25k or higher. Not good.

Vegas Bound · 10-02-2019, 10:26 AM

Quote:

Originally Posted by JANNETTYRACING

I know you are just having fun, and you do not intent any harm with this but it is these light hearted comments that lead people in the wrong direction.

Possible result, Stupid high IAT, an overspeeded blower and a broken engine from too much boost on low octane fuel

A recommendation like this needs to include all the details so as not to mislead someone.

For something like this you would need

Rotofab
LT headers with high flow exhaust
Cam Package
Blower Porting
102 Throttle body
TR7IX plugs
MSD wires
Crank case breather
Fore innovations fuel fuel pump fuel system with return
ID1300 injectors
E-85 fuel or Race gas.
and very competent custom tuning.

Ted.

I have those pulleys and some of your recommended upgrades.

jvervoren · 10-02-2019, 02:43 PM

Of course I'm new to the game but I thought most people do the upper first anyway and 2.55 is pretty common. Is that not correct?

jvervoren · 10-02-2019, 02:44 PM

If not any recommendations on pulley options. Car has a light tune with a Rota fab and catback exhaust. I'm not looking for huge power and I'd really like to roll stock injectors if possible but also can get new ones.

JANNETTYRACING · 10-02-2019, 03:59 PM

Quote:

Originally Posted by jvervoren

Of course I'm new to the game but I thought most people do the upper first anyway and 2.55 is pretty common. Is that not correct?

Popular doesn't mean the right way or best way.

JANNETTYRACING · 10-02-2019, 04:00 PM

Quote:

Originally Posted by jvervoren

If not any recommendations on pulley options. Car has a light tune with a Rota fab and catback exhaust. I'm not looking for huge power and I'd really like to roll stock injectors if possible but also can get new ones.

Our ATI superdamper with 10% overdrive pulley, belt, ARP bolt, 174 thermostat and JRE custom tune will bring it all together for a great running fun car.

203-753-7223

Ted.

jvervoren · 10-02-2019, 06:43 PM

Quote:

Originally Posted by JANNETTYRACING

Our ATI superdamper with 10% overdrive pulley, belt, ARP bolt, 174 thermostat and JRE custom tune will bring it all together for a great running fun car.

203-753-7223

Ted.

I'm really only looking at getting a pulley and maybe injectors. I already have a great tuner locally. Huge LS guy

JANNETTYRACING · 10-02-2019, 06:56 PM

Quote:

Originally Posted by jvervoren

I'm really only looking at getting a pulley and maybe injectors. I already have a great tuner locally. Huge LS guy

You just said you wanted to roll stock injectors?

If he is not over 6 ft and 270 lbs Im bigger LS guy

09-30-2019, 12:41 PM	#1
jvervoren Drives: 2012 Silver ZL1 M6 Join Date: May 2019 Location: Charlestown IN Posts: 64	255 Upper Pulley Is anyone running a 2.55 upper on stock injectors? I had a buddy of mine tell me I had to get bigger injectors for a 2.55. I thought I heard you can roll stock injectors though. I thought 2.45 and lower needed injectors. __________________ 2012 Chevy Camaro ZL1 M6 504whp/517tq 1997 Honda Accord AKA Beater with the heater. The daily 2015 RAM 1500 (sold) 2014 Mustang GT bolt ons and spray (sold)

10-02-2019, 02:43 PM	#9
jvervoren Drives: 2012 Silver ZL1 M6 Join Date: May 2019 Location: Charlestown IN Posts: 64	Of course I'm new to the game but I thought most people do the upper first anyway and 2.55 is pretty common. Is that not correct? __________________ 2012 Chevy Camaro ZL1 M6 504whp/517tq 1997 Honda Accord AKA Beater with the heater. The daily 2015 RAM 1500 (sold) 2014 Mustang GT bolt ons and spray (sold)

10-02-2019, 02:44 PM	#10
jvervoren Drives: 2012 Silver ZL1 M6 Join Date: May 2019 Location: Charlestown IN Posts: 64	If not any recommendations on pulley options. Car has a light tune with a Rota fab and catback exhaust. I'm not looking for huge power and I'd really like to roll stock injectors if possible but also can get new ones. __________________ 2012 Chevy Camaro ZL1 M6 504whp/517tq 1997 Honda Accord AKA Beater with the heater. The daily 2015 RAM 1500 (sold) 2014 Mustang GT bolt ons and spray (sold) Last edited by jvervoren; 10-02-2019 at 02:48 PM. Reason: update

10-02-2019, 09:22 AM	#5
Vegas Bound Account Suspended Drives: 2013 Sparkly Red One Join Date: Dec 2018 Location: Hospitality State Posts: 2,558	Do a 2.55/9.5 and have a big smile.