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Old 07-30-2020, 04:53 PM   #66
frnkeore
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Join Date: Jul 2019
Location: Southern Oregon
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Default Re: Let's build a drag race 8BA engine

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This question is more for Pete and Kiwi.

I have a high end dyno sim. I had already run it with my above 21 stud info, using a 59A cam. I estimate that I will be able to get at least 9.2 CR out of it so, I changed out the cam to Howards 260 @ .050 x .440 lift cam on a 110 LSA. With that I got 239 hp @ 5400 and 255 lb ft @ 4400. I then advance the cm 5 deg and got, 237 @ 5400 and 258 lb ft @ 4000. Note that the advanced cam, gave 3 more average hp and 4 more average TQ.

The program gives you a flat head block to start with, I added a 1.6 exhaust valve to it but, left the intake alone because it's hard to make improvement with it. Headers where as short as I could make them, to have a realistic exhaust. 14.4 primarys and 3.2 collector. Not ideal, I know.

What do you think about the HP / TQ and rpm levels?
Attached Images
File Type: jpg 239 dyno.JPG (43.8 KB, 21 views)
File Type: jpg 239 dyno +5.JPG (44.5 KB, 16 views)
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