2005-2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.

Stroke than BLOW!

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Old May 11, 2007 | 02:22 AM
  #1  
Nelsta21's Avatar
Nelsta21
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Default Stroke than BLOW!

Well im not talking about what you think. I was wondering whether stroking the 4.6 to 5.0, then putting a blower on it would cause a lot of hassles.

I have heard some horror stories about people litterally blowing the pistons out. Would I need to get smaller rods than typically come with a stroker kit if I wanted to put a blower on the motor.

Has anyone stroked and blown their motor. what kind of gains did you get.
Old May 11, 2007 | 03:12 AM
  #2  
05gtdriver's Avatar
05gtdriver
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Joined: Aug 2006
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From: Los Angeles Ca
Default RE: Stroke than BLOW!

Why would it cause problems, if you're gonna stroke an engine, I'd think you'd forge the bottom end since you're going through such expense in the first place. Just have to make a compatible match between compression ratio and how much boost you plan on adding. Livernois Motorsports builds dedicated strokers for either high-compression N/A, low compression Roots/Screw blowers and slightly lower than stock compression for Centrifugal applications(since off idle boost isn't as present as the positive displacement blowers). Blowers need proper tuning, first and foremost. I mean, the stock 3V motor runs a 9.8:1 C/R! No wonder 125-150 rwhp is easily obtainable from either type of blower.
I don't see anything butgreat power coming from a stroked/blown combo, but it will get pricey when all the smoke clears..............
Btw, the crankshaft is what provides the increase(in conjunction with the correct rods to give a desirable "rod ratio" so that ring placement isn't compromised on the pistons by having to use "shorter" pistons and limiting engine life) in stroke, so as long as the stroker shortblock is well designed, all your fears should be put to rest.
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