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Old 02-26-2008, 08:03 PM   #31 (permalink)
W.A.F.U.
5.3 Liter Vortec V8
 
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Join Date: Sep 2004
Location: Atlantic Canada
Drives: 2009 Cobalt SS/TC & 2009 Civic DX-G
Posts: 1,298
Re: MotorWeek- 1990 Chevy Beretta GTZ Review

Quote:
Originally Posted by DirtyMoney View Post
GM added balacing shafts to smooth the engine out which in turn took power away.
The HO Q4 was reduced to 175hp in 1994 due to a head redesign.

Remember, the non-HO Q4 put out 160hp. So they added balance shafts and lowered the torque curve to make it more usable with auto trannies before renaming it the twincam and using it in mainstream vehicles.
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