Any vendors doing ported heads or intake?

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May 27, 2020 | 11:46 AM

fatsport

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Melting Slicks

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From: Fl

Any vendors doing ported heads or intake manifold?

The LT1 responded well to ported intake manifold and heads, picking up 25-35 hp at the wheels. With the LT2 having a wide band O2 sensor could this be done on the stock tune?

Last edited by fatsport; May 27, 2020 at 05:44 PM.

May 28, 2020 | 10:45 AM

Cicio Performance

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From: Atlanta, GA

Quote:

Originally Posted by fatsport

The LT1 responded well to ported intake manifold and heads, picking up 25-35 hp at the wheels. With the LT2 having a wide band O2 sensor could this be done on the stock tune?

I believe it could be but I'm not sure I would recommend it.

Relying on fuel trims to bring the tune into check usually results in poor drivability.

May 29, 2020 | 12:16 PM

fatsport

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From: Fl

Quote:

Originally Posted by Cicio Performance

I believe it could be but I'm not sure I would recommend it.

Relying on fuel trims to bring the tune into check usually results in poor drivability.

Thanks for the feedback. Looks like the LT2 responded well to headers. “Toilets” picked up 20 hp. Took out some considerable weight too.

May 29, 2020 | 10:55 PM

Cordes Performance Racing

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Ours we will be doing that on actually. Did it years ago on the lt-1's for a no tune situation and worked out well.

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Last edited by Cordes Performance Racing; May 29, 2020 at 10:55 PM.

Jun 1, 2020 | 11:48 AM

fatsport

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Melting Slicks

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From: Fl

Quote:

Originally Posted by Joe@CPR

Ours we will be doing that on actually. Did it years ago on the lt-1's for a no tune situation and worked out well.

That’s great to hear Joe. Looking forward to your results.
You’ve built a rep for building fast cars on this forum- I have no doubt it will continue with the C8

Jun 7, 2020 | 05:00 AM

Z06Norway

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From: Merritt Island Florida

Quote:

Originally Posted by Joe@CPR

Ours we will be doing that on actually. Did it years ago on the lt-1's for a no tune situation and worked out well.

There was a rumour that C8 has Wideband O2 sensors and adjusted A/F ratio even at WOT...
Thats how Hennesy could drive with TT and get 650 HP...
That would mean that mapping need no adjustment for small HP increase ?

Can you confirm that ?

tia

Jun 8, 2020 | 09:00 AM

Cordes Performance Racing

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From: Mesa Az

Quote:

Originally Posted by Z06Norway

yes they have factory widebands, hennessey is putting a meth nozzle in and praying. I want to see a good graph of it and see it not close up the throttle body especially on the hit.