GM Performance Intake Question
05-15-2018, 07:32 PM
#1
GM Performance Intake Question
Has anyone seen the performance intake from GM part number 81452141. It costs around 625.00 and shows a high flow dry filter with the jake skull on it. Problem is for LT1 engines shows no gain in hp and around 10hp on lt4 and 17 on lt5. How can an intake with a advertised 30% more efficient flow rate not provide even a small amount of power on a lt1. How would better flow lead to no gain. I'm not looking for big numbers but not even a 5 hp bump when halltech or others show decent little bumps. Any ideas?
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dfkruger (05-15-2018)
05-15-2018, 07:50 PM
#2
This is my thought . On the base LT1 the air in is in balance with air out . If you added a cat less X pipe and a PTB now you have increased flow on both ends with the new intake . Logic tells me there should a gain . Part # 84152141 is over priced . Shop . I have seen it for around 500.00$ . Corvettes forever ! dk,
05-15-2018, 08:15 PM
#3
def not cheap option. I like the fact it is a GM product and won't touch warranty. I should have mentioned before I plan on adding either the corsa or borla x pipe and cat back system. I will do headers eventually and void the warranty but not for at least a year or two. Car is new with full 3 yr warranty in tact.
05-15-2018, 08:19 PM
#4
Looks like the new ZR1 has the same Box as the LT1's and Z06's, don't know if the filter is the same made in Thailand filter. It is your Dime.
05-15-2018, 09:37 PM
#6
Virtually no gain because the stock intake is nowhere near it's limit with a stock or lightly modified LT1. Its just an airbox. Get a full intake system at least. Still not worth the money but a bit less of an obvious waste of money.
05-16-2018, 12:03 PM
#7
Drifting
I would spend a little time and money on what I think is a simple improvement.
Under the car at the right corner of the grill/bumper cover you will find a triangle hole. This is the air intake to the filter. Next to this hole is space for a new opening of your chose.
In the engine bay there is a gap next to the radiator between the frame and fender. Hot air gets into the intake path. Close this opening.
Under the car at the right corner of the grill/bumper cover you will find a triangle hole. This is the air intake to the filter. Next to this hole is space for a new opening of your chose.
In the engine bay there is a gap next to the radiator between the frame and fender. Hot air gets into the intake path. Close this opening.
05-19-2018, 08:54 PM
#8
Tech Contributor
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Has anyone seen the performance intake from GM part number 81452141. It costs around 625.00 and shows a high flow dry filter with the jake skull on it. Problem is for LT1 engines shows no gain in hp and around 10hp on lt4 and 17 on lt5. How can an intake with a advertised 30% more efficient flow rate not provide even a small amount of power on a lt1. How would better flow lead to no gain. I'm not looking for big numbers but not even a 5 hp bump when halltech or others show decent little bumps. Any ideas?
Bill
05-20-2018, 10:32 AM
#9
I see no point in purchasing one for the LT1 since there is no gain in power unless you are just wanting something to look more pretty under the hood...
Last edited by lakemg; 05-20-2018 at 10:33 AM.
05-20-2018, 10:41 AM
#10
Le Mans Master
I am of the opinion that the stock filter is perfectly adequate for the LT1 and yet undersized for the LT4. I think the airbox is OK in both applications.
Increasing the filter area will increase power on the Z06 because the LT4 is choked off by the LT1 filter in stock form.
Adding it to the LT1, which already has enough airflow, does nothing but give you a Jake logo under the hood I think.
Increasing the filter area will increase power on the Z06 because the LT4 is choked off by the LT1 filter in stock form.
Adding it to the LT1, which already has enough airflow, does nothing but give you a Jake logo under the hood I think.
05-20-2018, 12:43 PM
#11
If the engine can't use the increased air flow then there won't be any increased power. Basically, if the filter gives you 1000 cfm per minute air flow but your engine at wide open throttle and max rpm only uses 700 cfm per minute the extra 300 cfm doesn't do anything for you.
Bill
Bill
05-20-2018, 08:29 PM
#12
Le Mans Master
05-21-2018, 10:36 PM
#14
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Location: Bonneville Salt Flats, 223mph Aug. '04
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Stated elsewhere here, no gain on otherwise stock LT1. Just for looks... if that's your thing. 