GM 847 vs 306

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06-19-2007, 09:54 PM

#16

FastLt1

Registered User

Join Date: Oct 2005

Location: Lebanon, VA

Posts: 195

Quote:

Originally Posted by zx1216

yeah, heads have never been off the block, 200k on it, haha. I'm shifting at around 6700 maybe a little higher. And yes i know i'm crazy/dumb for turning a high mile shortblock that high but its making power just as well as a low mile car would and its not my primary source of transportation so if it goes i really don't care. when that happens time for a low compression 355

What rpm is the numbers in your sig made at?

06-19-2007, 10:38 PM

#17

zx1216

Registered User

Join Date: Mar 2003

Location: Milwaukee, WI

Posts: 1,213

It peaks at about 5900 but it stays pretty flat till 6500 where they let off, it was still making about 350 rwhp

06-20-2007, 07:55 AM

#18

brain

Registered User

Join Date: Nov 1998

Location: Columbia, SC, USA

Posts: 746

Quote:

Originally Posted by FastLt1

What rpm are you meking those numbers in your sig?

Car made peak power at 5800 ish...Ideal shift point would be in the 6700 ish range.

06-20-2007, 10:39 AM

#19

95ttoplt1

Registered User

Join Date: Jun 2004

Posts: 411

I shift mine at 6700 as well. I think it works great with the stock heads and has pretty good drivablity with the proper stall and tune.

Here is mine cruising down the road: