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08-19-2013, 01:52 PM
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#1 |
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Registered User
Join Date: Mar 2008
Location: White Hall, IL
Posts: 4
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Engine swap for a dependable k20 driver
I just finished a restoration on my 1970 k20 4wd. Truck is rebuilt top to bottom, I think I have touched every part on the truck. We changed the drivetrain to a .30 over, 454cid, 10:1,large grumpy Jenkins heads, and a th400. Now that the truck is together, it's clear that it's not going to be a mud racing truck as we initially intended. We mostly take a cruise on Sunday, but would like it be dependable enough to take off in it, maybe even a power tour. Let me know your thoughts on these different swaps or your ideas.
My 454, smaller heads, less aggressive street roller cam I'm worried about the dependability of this motor. 5.3 swap I love this motor but it lacks the bling factor 8.1 swap It doesn't seem to be very popular, and I don't know what kind of mileage I would be getting into 5.9 cummins swap I love cummins, the dependability, and the fuel mileage. I don't know if I'm excited about listening to that diesel knocking in my 70. Any other ideas on crate engines? Posted via Mobile Device |
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08-19-2013, 02:05 PM
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#2 |
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Registered User
Join Date: Mar 2008
Location: White Hall, IL
Posts: 4
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Re: Engine swap for a dependable k20 driver
Posted via Mobile Device
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08-19-2013, 02:10 PM
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#3 |
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Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,623
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Re: Engine swap for a dependable k20 driver
454 would be easy, and why worry about dependability? If it is built right it will be great.
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08-19-2013, 04:47 PM
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#4 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,947
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Re: Engine swap for a dependable k20 driver
That 454 will last forever. There are a bazillion of them on the road (and on Power Tour) that will live long dependable lives. If you wanna swap over to a full roller... now's the time.
LS swap would be cool... but again, why mess with what you already have? The 8.1's are expensive when you find one. Even more expensive to build one. If all you're doin' is cruisin'... then I'd skip the Diesel swap. Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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08-19-2013, 07:10 PM
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#5 | |
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I built it
Join Date: Sep 2008
Location: Bakersfield ca
Posts: 744
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Re: Engine swap for a dependable k20 driver
a 454 is a pretty durable engine. pretty beefy parts even stock. a well built, well maintained big block with quality rings and bearings, good double roller, and roller cam will most likely last every bit as long as the ls engines. and have a boat load more torque.
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'72 k10 lwb 454, th400, 205, d44ft, 12b rear, 4in skyjacker, 35x12.5-15 superswampers, 4.56, blazer tank. painless wiring harness '98 dodge 3500 12v 5sp 4x4. the truck that actually runs Quote:
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08-19-2013, 09:08 PM
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#6 |
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Registered User
Join Date: May 2010
Location: Lewis County, WA
Posts: 1,523
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Re: Engine swap for a dependable k20 driver
454 it.
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'77 K35 - 454, SM465/NP205, 4.56 D60/14bFF |
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08-19-2013, 10:03 PM
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#7 |
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Senior Member
Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
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Re: Engine swap for a dependable k20 driver
427 stroker Duramax
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01-12-2014, 06:39 PM
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#8 |
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Registered User
Join Date: Apr 2013
Location: owls head, new york
Posts: 81
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Re: Engine swap for a dependable k20 driver
292 i-6 no power monster. But plenty of torque and very dependable
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62 k10 235/sm420 68  3500 250/sm465/eaton ho72/5.14s84 burb k20 350/700r4/14bsf/10b 3.73s |
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01-12-2014, 08:52 PM
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#9 |
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*** That's interesting ***
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 2,772
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Re: Engine swap for a dependable k20 driver
6.5L turbo diesel.
__________________
Tom  Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
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