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#26 | |
Registered User
Join Date: Jul 2005
Location: Saskatchewan
Posts: 189
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Re: 6.0 LS or build a 406?
Quote:
Once I started adding it up, I got to thinking about the 6.0 swap. L92 heads and a cam swap put a 6.0 up to 550 hp according to Car Craft and that's way more than what I want or need.
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Stu- 1981 GMC Sierra Classic LWB 355- original 2 bolt block, 10.2:1, vortec heads, Comp XE268 cam, built by self in 1992 700R4-2000 stall with lockup, shift kit, Corvette servo 3.07 open diff- I need a 3.73 posi! 2nd owner since 1986 - 388,000 km and counting. 100k by the first owner and the rest by me. |
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#27 |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: 6.0 LS or build a 406?
With the 400 blocks larger main journals most racers prefer the 2-bolt blocks. More meat in the main bearing saddle area. With only wanting 450 hp you can get away with just main studs in the 2-bolt block. You don't need to spend the bucks to install splayed main caps.
You can't go wrong with the Scat forged rotating assembly. I have used several of them on past projects and really liked the quality. My engine builder swears by them and hates the poor tolerances of the Eagle stuff. At 450 hp you can also get away with running a good aftermarket iron head and save some more cash. The Sportsman II is a great lower cost performance head. The cost savings over the AFR's will nearly pay for your bottom end. You just won't have the cool factor of the aluminum heads. Last edited by 68 TT; 07-21-2009 at 10:42 AM. Reason: TYPO |
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#28 |
Registered User
Join Date: Mar 2009
Location: Midland, Tx
Posts: 418
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Re: 6.0 LS or build a 406?
Get a 6.0 LQ4 and build it to a 370
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1972 GMC C10 Last edited by Manbearpig; 07-21-2009 at 02:13 AM. |
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#29 |
Registered User
Join Date: Jul 2005
Location: Saskatchewan
Posts: 189
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Re: 6.0 LS or build a 406?
68TT- you're right about the heads. They would be a splurg and would be overkill. But there's no kill like overkill.
__________________
Stu- 1981 GMC Sierra Classic LWB 355- original 2 bolt block, 10.2:1, vortec heads, Comp XE268 cam, built by self in 1992 700R4-2000 stall with lockup, shift kit, Corvette servo 3.07 open diff- I need a 3.73 posi! 2nd owner since 1986 - 388,000 km and counting. 100k by the first owner and the rest by me. |
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