Decision between blown long block vs complete low mileage motor
08-21-2013, 07:36 PM
#1
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Decision between blown long block vs complete low mileage motor I have been beating my head against a brick wall today trying to put together numbers and I'm trying make the best overall decision. With that said i am starting a LS1 build for my 91 miata. Main goal is to make close to 400whp NA and possibly a 100 shot down the road so i will be doing some upgrades to the motor either route I choose.
Today i came across a friend of a friend selling a ls1 long block for 450$. Long block has a spun bearing and 125k miles on it. It comes with all internals, heads, and timing cover ect. If i go with this option ill have to source a bunch of parts and have machine work done plus id have to source a T56 tranny.
2nd option would be to find a somewhat lower mileage complete LS1/t56 and go with a good cam and some other goodies.
Now i would assume building the motor from the ground up would be more pricey, lots of labor/ time (i have plenty of time) but would reward me better reliability, and a complete motor would be less money and less reliability yet be a much easier process and wont have to deal with sourcing a crap load of parts.
What would you guys suggest? Are my theories correct?
Today i came across a friend of a friend selling a ls1 long block for 450$. Long block has a spun bearing and 125k miles on it. It comes with all internals, heads, and timing cover ect. If i go with this option ill have to source a bunch of parts and have machine work done plus id have to source a T56 tranny.
2nd option would be to find a somewhat lower mileage complete LS1/t56 and go with a good cam and some other goodies.
Now i would assume building the motor from the ground up would be more pricey, lots of labor/ time (i have plenty of time) but would reward me better reliability, and a complete motor would be less money and less reliability yet be a much easier process and wont have to deal with sourcing a crap load of parts.
What would you guys suggest? Are my theories correct?
08-21-2013, 09:30 PM
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I'm gonna have to check out your build, car looks nice
08-22-2013, 09:43 AM
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The Ls2's are fairly pricey, I think it would be tough to find one with the DBW pedal an ECU for 5K. I lucked out, mine was 6.5K but I was able to sell off $1500 of aftermarket stuff that came with it.
Surprisingly these cars handle the extra power just fine. 400 HP sounds like a lot for such a light car, but with good tires and the smooth power delivery of the LS, putting down the power shouldn't be much of an issue until you're in the 500-550 range.
Surprisingly these cars handle the extra power just fine. 400 HP sounds like a lot for such a light car, but with good tires and the smooth power delivery of the LS, putting down the power shouldn't be much of an issue until you're in the 500-550 range.