Quote:
Originally Posted by KingLT1
I don't think it's illogical at all. Not everybody wants to tear into their engine. Correct 575ish whp is just absolute max for the stock fuel system on 93. The Maggie base setup is 550whp. Add nothing but E85 and LT4 fuel system and you are at 620whp at the same boost level.... 65whp gain.
You don't need a cam to get more fuel into the motor. I just posted twice now ADM performance making 680whp with the stock cam on E85 using LT4 injectors and LPE pump. That is 180whp more then what the stock system will support on E85(basically you cant even run e85 with boost on the stock fuel system) and roughly 60whp more then what the LT4 pump will support with E85 on a stock cam. The LT4 hpfp is 800.00, the LPE pump is 1500.00. so an extra 700.00 for 60whp more fuel headroom. A cam swap kit cost 1500.00 plus you still got to buy the pump. Now you are 2300.00 in parts(not including injectors or low side)...who is doing the work? That cam install gonna end up costing substantially more with labor unless you do it yourself. So cam and LT4 parts to make 700-720whp on E85, or stock cam and LPE big bore to make 660-680whp. For the cost difference, the stock cam/LPE BB setup seems like the more logical approach unless you do the forged Pistons while it's apart so you can turn it up further.
So for me it's only logical to do the cam if you are going to do the Pistons since power is up in the range where the factory piston longevity becomes hit or miss and the engine is already apart. And now you just added a couple thousand dollars more to the cost of the build. I would rather keep the stock motor in tact for now with a little less power, then build a motor when the time comes and do rods, pistons, cam, and stud the mains. Jmo
So to break it down:
Whipple- 6k
LPE big bore-1500.00
LT4 injectors- 500.00
ZL1 intank- 140.00
JMS booster- 400.00
Install-2000.00
Tune- 500.00
--------------------
Total-$11,040.00 for 660-680 whp on E85
or
cam kit- 1500.00
Labor- 2000.00
LT4 pump instead of LPE- -700.00
---------------------
Total- 14,200.00 for 700-720whp on E85
or
forged drop in pistons- 1200.00
labor(another 500.00? since the engine is mostly apart)
---------------------
Total- 16,900.00 for 760whp on E85(now at injector limits unless switching to race fuel?)
So now we are now at 5860.00 more then the basically stock motor/stock cam setup to make another 80-100whp reliably on E85. And then we come to the point, do we add the 3500.00 fuel injectors, or run high dollar race fuel to turn it up and break 800? Then when it's all said and done, how much of the power will ever make it to the pavement and not turn into tire smoke?
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That's hilarious. Did you read what you wrote?
Let me recap.
1. You can do things cheaper.
2. In the long run you want to do all of the "expensive stuff".
You wrote, "I would rather keep the stock motor in tact for now with a little less power, then build a motor when the time comes and do rods, pistons, cam, and stud the mains. Jmo"
In other words, you want to do everything I suggested, but you want to do it in chunks...because you would rather spend the money over time instead of doing it all at one time. We are in agreement.
You do realize:
1. the cheapest labor option is to do it all at once.
2. Your math doesn't account for risk of running the stock engine under boost. When you run the engine with a less optimal setup (no pistons, no cam, no strengthened rods, springs, etc.) there is increased risk that your expense will be much higher than just doing it right to begin with.
3. You don't account for the cheapest path to 850whp...just adding alky to either 93octane or e85. Others have already done this...without running the big bore pump.
In other words, you want to do it your way because it's cheaper up front. Ok. Because I came to the same conclusion, I did everything at one time so that it would be cheaper over the long run.
