Quote:
Originally Posted by tt_z33
im leaning more towards a turbo setup. if i do the 240 though it would be more or less a pure track car. im more prone to choose the rb for this reason because of its high redline and it can make a good amount of power. id probably go with small twin turbos to cut down on spool up time.
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The Rb's redline at 7,000RPM, The Ls1 redlines at 6200RPM, So your only loosing 800RPM, Stock. Now you can build a Stronger drivetrain in a LS1 for half the price your going to on a RB. Also the RB doesn't put down near the torque a Ls1 does, esp for getting out of the hole.
now with the Rb's your not going to want a Small turbo on it unless your not planning on making over 300HP, B/c they won't make anymore on a small turbo. They have launch controls out there to spool up a big turbo so it doesn't lag. I personally use a Gizzmo launch control. Seems to work ok.
But you will spend less in the end on a Ls1 with twin Turbo's and make over 500WHP than you will on a RB and buy the supporting mods to make the same Hp.
To make 500+Hp on a RB you need a Power FC or some type of Engine managment, injectors, Throttle bodies, MAFS, Bigger Turbo's ETC. Whcih will cost you over 5000$ just for the mods, not counting the motor being installed. So you looking at 10k + on a 500HP RB.
Ls1, you can buy the engine and install it for around 5k, You can buy a nice turbo or pro charger kit for around 3500-4k and that will put you well over 500HP. Plus the Ls1 will be more reliable and streetable. But this is just my experience.