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Do I need any extra sensors when have a ls9 cam in a ls2…

Customer Question
Do I need any...

Do I need any extra sensors when have a ls9 cam in a ls2 block cause I did the swap and it runs like shit timing is dot to dot with a three b olt cam gear changed o2 sensor mas airflow new plugs

Mechanic's Assistant: What is the make/model/year of your car?

06 gto

Mechanic's Assistant: Are you fixing your GTO yourself? What have you tried so far?

Do I need any extra sensors when have a ls9 cam in a ls2 block cause I did the swap and it runs like shit timing is dot to dot with a three b olt cam gear changed o2 sensor mas airflow new plugs

Submitted: 8 months ago.Category: Pontiac
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Answered in 2 days by:
11/19/2017
Pontiac Mechanic: Chris (aka- Moose), Pontiac Technician replied 8 months ago
Chris (aka- Moose)
Chris (aka- Moose), Pontiac Technician
Category: Pontiac
Satisfied Customers: 52,690
Experience: 16 years of experience
Verified

I am sorry no one has responded yet. I know you must be thinking " I have been taken or this is a scam" Neither are the case. Sometimes there are more questions than we can get to and we just keep getting farther and farther behind. Sometimes what a customer asks, no experts online are confident there answer will be good enough. Is there any more information you can add to your concern or is there another concern you may have that we could answer instead?

Chris

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Customer reply replied 8 months ago
you saying you can't answer my question
Pontiac Mechanic: Chris (aka- Moose), Pontiac Technician replied 8 months ago

No I am not saying that. Is there any more information you can think of which may help me, help you

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Customer reply replied 8 months ago
I have a ls2 block i Took the heads off puts set of trick flow heads 225/235 with the ls9 cam titanium valve springs lifters put a set of roller rockers on their heart Heartland roller rockers did the preload now running no check engine light but that hello backfire sounds like it's running on 7 cylinders but I checked all the plugs have new Blaster coils put on I'm running a supercharger I check my gapping on it so what do you think
Pontiac Mechanic: Chris (aka- Moose), Pontiac Technician replied 8 months ago

I feel like you have changed alot at once and this will be hard to pinpoint not in person. I am going to opt out to see if another can help better than I.

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Pontiac Mechanic: Gary, ASE Certified Technician replied 8 months ago
Gary
Gary, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 1,913
Experience: Senior Technician
Verified

Hello there,

You will need a custom tune to run an LS9 cam with a supercharger.

How much boost are you running?

What ratio rocker arms?

You have many variables here.

Gary

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Customer reply replied 8 months ago
I'm only running three pounds of boost custom tune huh maybe cause it fine when u take off just in just in the higher RPMs it runs like s*** backfiring like a motherfuker no power
Pontiac Mechanic: Gary, ASE Certified Technician replied 8 months ago

Yes, needs to go on a dyno to for further analysis.

Does the engine light come on when fault occurs?

Gary

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