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Old 09-20-2015, 08:35 PM   #1
HP HUNTER
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Default Peanut Port Drag Test

For several years I've been building 9.2 compression 467s with 236 peanut port heads, these engines use a 228/238/114 hyd flat tappet cam with a performer RPM intake typical HP was about 517-518 corrected HP, with about 560 TQ. Finally it looks like I will get to test one in my 68 Chevelle, 3720 pounds at a 2130 foot track. My goal is a high 6 sec pass in the 1/8 mile. Some pictures of the build.
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Last edited by HP HUNTER; 09-20-2015 at 09:04 PM.
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Old 09-23-2015, 06:01 PM   #2
impstocker
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Default Re: Peanut Port Drag Test

That's cool. I always considered "Peanut Port" heads as No Good. How much RPM were obtained with those figures.

Those heads only came on "truck" motors, right? Could not build a traditional stocker motor because they never came in a passenger car, correct?

Will Lamprect
i/SA 65 Impala in progress. 396/935 "Oval Port"
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Old 09-23-2015, 06:18 PM   #3
Mark Yacavone
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Default Re: Peanut Port Drag Test

90-92 SS Chevy pickup.
I don't know what the heads look like.
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Old 09-23-2015, 08:40 PM   #4
HP HUNTER
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Default Re: Peanut Port Drag Test

Quote:
Originally Posted by impstocker View Post
That's cool. I always considered "Peanut Port" heads as No Good. How much RPM were obtained with those figures.

Those heads only came on "truck" motors, right? Could not build a traditional stocker motor because they never came in a passenger car, correct?

Will Lamprect
i/SA 65 Impala in progress. 396/935 "Oval Port"
There is some passenger car combinations legal with these heads. The cam is 228/238 @ .050, very mild, I did run it to 6400 RPM on the dyno, my peak power was around 6100 RPM.
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Old 09-24-2015, 08:59 AM   #5
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Default Re: Peanut Port Drag Test

HP, Do you know year and model Chevrolet came with these 454 "peanut Ports"
Right know i am checking Class Racer Info Guide.
Will Lamprecht
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Old 09-24-2015, 09:36 AM   #6
HP HUNTER
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Default Re: Peanut Port Drag Test

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Originally Posted by impstocker View Post
HP, Do you know year and model Chevrolet came with these 454 "peanut Ports"
Right know i am checking Class Racer Info Guide.
Will Lamprecht
I've been told a 1975 Chevelle is legal, not sure it came that way though.
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Old 09-24-2015, 09:58 AM   #7
Chipper Chapman
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Default Re: Peanut Port Drag Test

73-75 are allowed the 236 peanut, 90 454ss truck uses the 360 peanut, 91-92 uses the 148, even smaller peanut port. Seems to be plenty of SS/GT 454's using the 236.
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Old 09-27-2015, 10:39 AM   #8
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Default Re: Peanut Port Drag Test

I remember hearing that Lingenfelter ran a killer peanut port combination in SS back in the day.
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Old 09-27-2015, 06:25 PM   #9
Rick Leininger Jr.
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Default Re: Peanut Port Drag Test

Quote:
Originally Posted by impstocker View Post
HP, Do you know year and model Chevrolet came with these 454 "peanut Ports"
Right know i am checking Class Racer Info Guide.
Will Lamprecht
1975 Chevy Bel Air, Impala, Caprice, Station Wagon, Monte Carlo, Malibu, El Camino.

1976 Chevy Impala, Caprice, Station Wagon.
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Old 09-27-2015, 09:36 PM   #10
HP HUNTER
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Default Re: Peanut Port Drag Test

Ready to race.
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