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Correct Hood for a Big Block

Old 06-29-2015, 12:39 PM
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Dhasso
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Default Correct Hood for a Big Block

Hello All,

I am putting a 454 motor into my 1970 corvette. It had a 350 with a Edelbrock performer intake and holley carb. Will the big block with the same intake and carb fit under the stock hood? I would be putting on a stock big block/LT-1 hood. I do not want to go to an L88 type hood. Does anyone have any experience?

Thank you in advance,

Dhasso
Old 06-29-2015, 03:10 PM
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MelWff
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you would need a drop base air cleaner. You would also need a short filter element which defeats the purpose of increased airflow.
Old 06-29-2015, 03:29 PM
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69Vett
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almost any BB intake other than stock height, steel or Aluminum
will require some minor modifications to fit under stock BB hood.
Old 06-29-2015, 03:37 PM
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ddawson
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To fit I used a LS6 BBC intake and Quick Fuel carburetor.

This allows the shield and spacer to be used and I still had a little more room.

Old 06-29-2015, 04:25 PM
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The performer and holley should clear with a low profile air filter.
I had an edelbrock 1407 on the stock intake with a 1/2" spacer, and low filter, but I squished the filter slightly with the hood closed. There isn't much room, even with the BB hoods. That 1/2" spacer was the difference from clearing and not in mine.

I don't know where you're located, but I am selling my LT-1 style hood in favor of an L-88 wiper delete.

If you're interested PM me.
Old 07-01-2015, 01:11 PM
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scrappy76
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My experience is as follows :

I installed a 454 with a stock intake and qjet in my 76. It fir under the hood just barely using one of the triangle mesh air cleaner. Then I installed an ecklers low rise hood ( about 2" above stock ), and was able to install a regular 14 x 3 air cleaner. I then installed an edelbrock performer intake. I was not able shut the hood untill I installed a drop base on the 14" air cleaner. Right now there is only about 1/8" between the round head bolt holding the air cleaner down and the hood.
I am hoping that when I install my L88 hood I just bought, I can go back to the regular base for the air cleaner. The edelbrock performer is a pretty high manifold compared to stock.
Old 07-01-2015, 05:12 PM
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I am using stock Alum. intake and Holley,
I made my own custom dropped base air cleaner.
everything fits nicely under a BB hood.
Old 07-01-2015, 05:15 PM
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GregS_72
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Originally Posted by scrappy76
My experience is as follows :

I installed a 454 with a stock intake and qjet in my 76. It fir under the hood just barely using one of the triangle mesh air cleaner. Then I installed an ecklers low rise hood ( about 2" above stock ), and was able to install a regular 14 x 3 air cleaner. I then installed an edelbrock performer intake. I was not able shut the hood untill I installed a drop base on the 14" air cleaner. Right now there is only about 1/8" between the round head bolt holding the air cleaner down and the hood.
I am hoping that when I install my L88 hood I just bought, I can go back to the regular base for the air cleaner. The edelbrock performer is a pretty high manifold compared to stock.
Have you had a chance to check the fit of that L88 hood? Any body work needed to get it to fit properly? Where did you get the hood? Thanks!

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