BBC hp et estimates...

Old 05-09-2008, 09:51 AM
  #1  
I972Nova
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Default BBC hp et estimates...

Ok I have asked this before, but my combo has changed alot since i asked.

I bought a set of 188 heads from a friend that were "good to go" I get them to the machine shop and they are 2.19's not 2.25's as he said and the springs were mismatched and some broke. With friends like that who needs enemies!!!

Anyhow I have a 468 with 12.5:1 compression. Gm steel crank, 7/16" dimple rods, a Lunati .753 / .712 roller cam with 280 / 290 duration at .050, and 110 lobe centerline.

The heads I ended up getting are ProTopline aluminum 320cc runner with 2.25 / 1.88 valves.

Topped with a Super victor intake and holley 8896 1050 dominator.

My car is a 1900 pound hardtail dragster with 5800 stall 8" converter and 4.86 gears (set up for 1/8 mile).

I wont have the motor back for over a week and I was wondering what everyone thought about this combo and what hp / et I might be looking for.

Any idea of what my 188 heads are worth with newer manley 2.19 / 1.88 valves and a little clean up port work. with or without the mismatched 1.625 springs keepers and retainers...

Thank you all
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Old 05-09-2008, 10:59 AM
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Tod74
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what is a "188" head ?
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Old 05-09-2008, 04:03 PM
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I972Nova
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they are a gm casting that ends in 188..
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Old 05-09-2008, 06:41 PM
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tcarda
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Originally Posted by Tod74
what is a "188" head ?
They are a 118 cc open chamber retangle port head. Basically they are the same as a GM 990 head.
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Old 05-09-2008, 07:38 PM
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I972Nova
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Much better desription... I sold the 188 heads already...

Any guesses at the Hp or et????
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