LS Build: In Progress
02-11-2019, 07:43 AM
#131
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Join Date: Jan 2019
Location: South East Michigan
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Think my setup is around 3000-3500lbs as it sits I haven't weighed it yet, and yes lake Erie will be the majority of my boating. I can see how weight would help to a point. Either way I thought it would be neat to see an older boat like mine with a Ls swap especially because its kind of a newer generation thing. Then all the old die hard bbc guys could see the new with the old. Really just a good conversation piece while having some soda pops on a beach if anything.
02-12-2019, 12:13 AM
#132
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02-12-2019, 12:25 AM
#133
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I noticed you said you were replacing blown bbc engines that were burning 110gph EACH. Im hoping these were making at least 1000hp each neighborhood ?
I do understand some engine designs are more fuel efficient than others, but at some point it still takes x amount of fuel to make x amount of hp.
in the truck world, when the LS was an option along side the 8.1L bbc engine, the fuel savings were not all that impressive in my opinion. If you took a mid 2000s chevy 3500 dually 4x4 , with a 4.10 rear, and towed a boat, its not like the 8.1 got 8mpg while the 6.0 liter ls was getting 16mpg towing the same load. There was a small fuel mileage gain with the 6 liter, but it also didnt make nearly the torque the 8.1 liter did, nor did it make that torque at such a low rpm as the 8.1 liter did.
Ive had a few tow rigs . A 6 liter ford diesel, 5.4 gas ford, v10 gas ford, and 454 vortec chevy. They all got in the 8-10mpg range towing a heavy boat. My theory is it simply requires x amount of fuel to keep a truck/boat going at 70mph, and theres only so much fat to trim to get it done.
I dont buy the story that a 600hp LS is gonna be a huge game changer for your wallet at the gas pump over a similarly equipped bbc making 600hp.
That being said, looking forward to the results. Always fun to see something different being built.
I do understand some engine designs are more fuel efficient than others, but at some point it still takes x amount of fuel to make x amount of hp.
in the truck world, when the LS was an option along side the 8.1L bbc engine, the fuel savings were not all that impressive in my opinion. If you took a mid 2000s chevy 3500 dually 4x4 , with a 4.10 rear, and towed a boat, its not like the 8.1 got 8mpg while the 6.0 liter ls was getting 16mpg towing the same load. There was a small fuel mileage gain with the 6 liter, but it also didnt make nearly the torque the 8.1 liter did, nor did it make that torque at such a low rpm as the 8.1 liter did.
Ive had a few tow rigs . A 6 liter ford diesel, 5.4 gas ford, v10 gas ford, and 454 vortec chevy. They all got in the 8-10mpg range towing a heavy boat. My theory is it simply requires x amount of fuel to keep a truck/boat going at 70mph, and theres only so much fat to trim to get it done.
I dont buy the story that a 600hp LS is gonna be a huge game changer for your wallet at the gas pump over a similarly equipped bbc making 600hp.
That being said, looking forward to the results. Always fun to see something different being built.
Last edited by mggdoors; 02-12-2019 at 12:28 AM.
02-12-2019, 03:13 PM
#134
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Theres alot of NA bbc engines being built today, that have great cylinder heads, proper camshafts, induction etc, that net sub .500 brake specifics. Of course if some slapped together old turd with a pig rich carb on top , and an overall poor combo, then yes it will be a guzzler.
02-12-2019, 06:25 PM
#135
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that was why i was asking about how much power your blower motors were making that were consuming 110gph worth of fuel. At only 870hp, that BSFC number would be off the chart .
Theres alot of NA bbc engines being built today, that have great cylinder heads, proper camshafts, induction etc, that net sub .500 brake specifics. Of course if some slapped together old turd with a pig rich carb on top , and an overall poor combo, then yes it will be a guzzler.
Theres alot of NA bbc engines being built today, that have great cylinder heads, proper camshafts, induction etc, that net sub .500 brake specifics. Of course if some slapped together old turd with a pig rich carb on top , and an overall poor combo, then yes it will be a guzzler.
02-15-2019, 06:44 PM
#138
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02-15-2019, 07:59 PM
#139
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looking awesome
A little more engine porn. Just sprayed exhaust. 
