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Author Topic: Enclosed body?  (Read 3509 times)

Offline 421Altered

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  • Your Best Time: 5.09 in 1/8th
  • Your Engine: alky injected 421sbc
  • Your Track: Adel, Ga.
  • Your Vehicle: 125" Altered
  • General Location: South Georgia
Enclosed body?
« on: July 02, 2017, 07:56:04 AM »
I have a 125in altered with a 421sbc with a enderle hat system. Best time so far 5.09@134.  From the front of the engine forward is completely open, with a laydown radiator, trans cooler, and alum 4 gal fuel tank in the very front.  My question, if I enclosed that and put a nose on the car, how much better et and mph could I expect?
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Offline Curly1

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  • Your Best Time: 7.95 @ 167 1/4 mile
  • Your Track: Texas Motorplex
  • Your Vehicle: 125" Altered
Re: Enclosed body?
« Reply #1 on: July 02, 2017, 11:27:22 AM »
My opinion for what it is worth is any small gains made with aerodynamics would be offset by the weight gain especially in the 1/8 mile.
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Offline JrFuel Hayden

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  • Your Best Time: 6.02, 236 mph, 1/4 in 1973 Div 3 TF Champ
  • Your Engine: SBC, Alky, 403 ci, Best 6.99 @ 190 & 409 Hemi
  • Your Track: Bakersfield
  • Your Vehicle: 225" FED NHRA Heritage Jr Fuel
Re: Enclosed body?
« Reply #2 on: July 02, 2017, 12:52:32 PM »
Are you burning alky ? If so, why do you feel you need a radiator, alky burns better [ more HP] with higher engine temps.
I run at least 180° at launch and 200-220° at turn off, in my all iron SBC, with water. We have found running water in the block & heads makes about 20 hp more on the dyno.
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Jon C. Hansen

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Offline 421Altered

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  • Posts: 17
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  • Your Best Time: 5.09 in 1/8th
  • Your Engine: alky injected 421sbc
  • Your Track: Adel, Ga.
  • Your Vehicle: 125" Altered
  • General Location: South Georgia
Re: Enclosed body?
« Reply #3 on: July 02, 2017, 06:58:38 PM »
Thanks Curly!  Jr. Fuel, do you circulate the water, or just block the ports off?
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