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Old 03-28-2012, 04:51 PM   #17
CC69Rat
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Join Date: Jan 2011
Location: Chattanooga TN
Posts: 6,205
Re: Whats your impression of a 5.3L LS motor in these trucks?

Where are you finding these cheap (low priced) LS motors? Everything I find is $3k range and it has a boatload of miles on it. Maybe I'm just not looking in the right place.

I have looked .. I like the LS motors and I have the prime candidate for one if the numbers motor ever gives up. but, I'm not about to change a high nickel 0010 block for an LS unless it makes sense.

At 4.50/gl - 20mpg = ~.22 or .23 per mile. 30mph = .15 per mile.

At .07 difference per mile - For every $1000 additional you spend on the swap, it takes you 14,300 miles to offset the difference. Yes, older gen small blocks can be had pretty cheap and parts are plentiful .. but to find an LS2 / T56 swap out of a GTO for $3k (?) Is that possible? I don't know .. For $3,000 I can build a 350 than will hang with it. Just thinking Apples to Apples. (Cost wise)

In no way stirring the pot one way or the other, cause I like both ! I'm just trying to think out loud and help justify the cost, all things considered.

That would be a cool show actually. Take an equally prepared C10 body, and a $5,000 budget. One with LS, one with First Gen stuff. See who wins, kinda like that Supercar show with Tanner Felts. Slalom, braking, 0-100-0, etc. That would be interesting.
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1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy
1986 Silverado Short Fleet - Scarlet *Sold*
1985 Silverado Short Fleet *Sold*
2022 Jeep Gladiator Mojave
2001 Jeep Cherokee XJ 4x4 - Lifted, Built
1992 Jeep Cherokee XJ 4x4 - Lifted
2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)
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