Originally Posted by The Bolt-On Terror
Unless you're very resourceful like the BEERTESTR, then yes, a conversion is your most expensive route to horsepower.
Dependability....well again that all depends on how well the conversion is done. On average, leaving it as close to factory as possible is going to work out best for you.
Hey, who you callin'..
I just think that if you are going to start pouring money into making power , start with the better design. If all you are looking at is to get to 350/350 hp/torque you can certainly get there cheaper with the LT1.
What about 400/400? What about 450HP? I'm making well over that with a smaller cam than an equivalent(ish) LT4 hot cam in my iron 6.0. On carburetor. What about 500hp and 7000rpm? What kind of aftermarket parts do you have to start throwing at an LT1 to get there?
Lets start this way. Given similar displacements, which engine family makes more stock hp/cubic inch. Stock 5.7L lt1-260 hp.. I'll tikt the scales and say stock LT1 corvette even though it starts at aluminum heads and say 300 hp is the lt1 baseline. LS1 345 HP. Toss a stock cam and better heads on both. Make your LT1 an LT4. 330,HP. Stock heads and cam and LS1 and make it an LS6. It's just heads cam and intake like the LT1-4... but the LS6 makes 405HP.
Stronger block, better oil pump, less leak prone seals, better valve angle, better valvetrain parts, stronger crank, better rods, taller deck, better intake, better ecm/pcm.
Pat.... if you started all over again, would you build an LT or an LS?
I'm on a mission to make the LS conversion less costly, less daunting. It's not as scary as you think.
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