427 sbc dyno sheet - Team Camaro Tech
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post #1 of 11 (permalink) Old Nov 13th, 14, 11:27 AM Thread Starter
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427 sbc dyno sheet

hey guys,

what do you think of my dyno sheet.

427 sbc (dart shp block), dart pro1 heads, pump gas

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post #2 of 11 (permalink) Old Nov 13th, 14, 11:43 AM
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Re: 427 sbc dyno sheet

Very nice. I just pulled the 427 sb out of my '72 Vette last week. It was the last engine I put together with a flat tappet cam and it's time to update it a bit. Yours looks like it comes on early and hits hard.
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post #3 of 11 (permalink) Old Nov 13th, 14, 11:54 AM Thread Starter
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Re: 427 sbc dyno sheet

its a hydraulic roller cam, keith black diamond pistons, scat crank, dart dual plane intake, 750 carb. (all spray bombed chevy orange w/ 350 decals) haha
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post #4 of 11 (permalink) Old Nov 20th, 14, 10:24 AM Thread Starter
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Re: 427 sbc dyno sheet

what kind of 1/4 mile times could I get out of this on 235 drag radials and caltracs w m21 muncie? (my current setup)
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post #5 of 11 (permalink) Old Nov 20th, 14, 02:17 PM
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Re: 427 sbc dyno sheet

Quote:
Originally Posted by m21man View Post
what kind of 1/4 mile times could I get out of this on 235 drag radials and caltracs w m21 muncie? (my current setup)
My guess would be mid to low 11's.

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post #6 of 11 (permalink) Old Nov 20th, 14, 04:45 PM
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Re: 427 sbc dyno sheet

Rear gear is everything, the m20 with a 4.10 was 2-3 tenths faster and 2 mph faster than the m21 on my vette on a back to back test within 3 hours of each other when the m20 broke at the track.

Wide ratio is the answer. You will need to do the math so that you go through the traps at 6,000, as that is where your peak hp is.

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post #7 of 11 (permalink) Old Nov 20th, 14, 06:16 PM
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Re: 427 sbc dyno sheet

Nice numbers....care to share cam specs ?

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #8 of 11 (permalink) Old Nov 21st, 14, 07:28 AM
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Re: 427 sbc dyno sheet

Nice flat powerband. She will pull everywhere....

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post #9 of 11 (permalink) Old Nov 21st, 14, 12:12 PM Thread Starter
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Re: 427 sbc dyno sheet

Camshaft Advertised Duration Street/Strip engine: 294 Intake, 300 Exhaust
Camshaft Duration @ .050" Street/Strip engine: 241 Intake, 247 Exhaust
Camshaft Lift
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post #10 of 11 (permalink) Old Nov 21st, 14, 12:14 PM Thread Starter
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Re: 427 sbc dyno sheet

She sure pulls everywhere I just had it rebuilt due to a very bad oil consumption issue. The rings were shot. The builder tried to blame me saying I ran it too rich. Even though I had it hooked up to an afr gauge. I believe the machine work was subpar. We'll see it's now back in the car.
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post #11 of 11 (permalink) Old Nov 21st, 14, 12:54 PM
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Re: 427 sbc dyno sheet

I'm sitting on the edge of my chair waiting for the smokey burnout videos!

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