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Old Jan 24, 2004 | 10:22 AM
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Ralph
TR Balla Donor Supreme
 
Joined: Aug 2000
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Question RB20det VS RB25DET

I borrowed this info off of another website and was wondering what where the pro's and con's of these two motors OTHER than the year of the motors.

Alrighty, here's the lowdown on this swap:

$3250 RB25DET Clip
$400 - New Driveline
$150 - Parts, ie: fluids, filters, wires, crimps, etc...
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$3800 = 250 RWHP


$2250 RB20DET Clip
$0 - Uses KA driveline
$150 - Parts, ie: fluids, filters, wires, crimps, etc...
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$2400 = 205-210 RWHP


That's it guys. That's all the cost behind both swaps.

Of course Labor isnt included or wiring, and the clip prices I've found have been cheaper and few more expensive. What Im trying to ask is, I know the SR is the more typical platform to start with because of power, availabilty, support, etc...but if the $$$ wasnt an issue to start(within reason), which motor would be recommended to drop into the S14 chassis. I've done some searching on the RB25 using the R33 crossmember for a bolt in swap, but are still finding different threads about using custom motor mounts from unstable/mkcinney/phase2 and tranny mounts. I have also read that the aftermarket is starting to grow with more companies picking up parts for a growing customer base, so that really isnt an issue. It comes down to 4 cyl vs 6cly an overall hp for mainly track use/drag. Any opinions, links, suggetions(Taylor said SR all the way, but Im hoping to get somemore input, no offense Taylor-You are the Man). Thanks in advance. And I know about SS 530+whp SR, and the power they can make...so please keep it tech related if possible...can someone make 530whp with a RB20/25 for the same price or cheaper...and still have room to go?
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