5.0 vs LS1

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Jan 31, 2008

#26

Jp7

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Quote:

Originally Posted by 01xltranger4x4

A 4-banger isint going to have to low end torque as a v8 either. Its a TRUCK not a car, we need torque for off road, towing, etc.

My stock "4-banger" has 305 ftlbs of torque at 3500 RPM. I think my truck has 170 ftlbs (3.0 v6). This was before I started playing with boost/timing (now I have 369 ftlbs) - Small motors do have plenty of torque, when done right. There are 2 factors that limit the torque and power capacity of any engine, regardless of displacement:

1 - How much fuel can you get to the engine?

2 - How is the quality of the build of the engine? (forged/cast parts... rotational balance.. ect)

This is why my 2.0 Litre Evo surprises a many "big v8" guys.

Jan 31, 2008

#27

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Quote:

Originally Posted by Jp7

Neither, go with a EJ257 engine. Just as much torque, and horsepower with a lower center of gravity and much better fuel mileage.

And whats the reliability of such *offroad*?

Quote:

... At 14 lbs boost (stock boost on this motor) the stock rods, pistons and crank are forged so the turbo can be boosted to 20psi without problems. (400+whp and ftlbs torque)

Those numbers are beaten WITHOUT ANY ' boost ' or juice on an SBC or SBF.

Jan 31, 2008

#28

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Quote:

Originally Posted by Jp7

because gas is already 3$+ - big displacement = always pulling in alot of fuel. Low displacement with big turbo = low fuel use when in vacuum, and big fuel use when the turbo spools up. Not to mention less moving parts in a smaller motor without pushrods, and less weight.

I called a local yard. That Turbo Subi motor.. they want 7500$ for it.

You now have to fabricate all the same parts for it as you would an American V8 ( motor mounts, radiator/support, exhaust ). You have emissions worries and registration worries per state.

The Engine I have weighs 475lbs as a COMPLETE assembly from flywheel to waterpump, intake to oilpan, hedder to hedder. The transmission is another story

.

Your boxer engine weighs in at 290lbs.

Doing the math, $ per HP/lbft and finding parts.. even at 5$/gallon, you would have to drive for quite a few years to eat up the difference and such would be offset by maintenance costs there after.

Jan 31, 2008

#29

revo2k11

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From: MA

and dont turbo motors need premium gas where you could potentially get away with regular for a stock V8

Jan 31, 2008

#30

chriswells78

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From: Powell, OH

You would have to be an idiot to put a big turbo 4 banger in a heavy vehicle. I'm sure that is why all the one ton guys are flocking to put 2.0L 4 bangers in their trucks.

Dollar for dollar, pound for pound, ease of fittment and the hours of work involved, you'd be better off with a stroked EFI SBF in a ranger. You could be putting 400hp and 400tq to the ground in less than a week for less than $4000, still be getting 20mpg on the highway and still pass emissions.

Jan 31, 2008

#31

94greenmachine

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From: Virginia Beach, VA

Quote:

Originally Posted by Jp7

Ok, here is the deal. I have sat back and watched this thread develope. I am going to go the route of the LS1, or an LS series engine, NV4500, NP205. I am not throwing a ricer suby engine in my truck. Are you out of your mind. Hell No. My first vehicle was a 98 Nissan 240SX with a SR20DET Black top Swap in. So, I know that arena very well. I refuse to even CONTEMPLATE using those puny engines. I have always said, and will always hold to putting a V-8 up against any 4 banger / 6 banger turbo any day. You can for the same money invested make that V-8 stomp that 4 banger in idle!

Anyways, I stand firm on my V-8 Swap. I appreciate the ideas, and the suggestions for the engines. I don't mind the work involved, as long as I know that the end result will be one BAD *** TRUCK!