Hey guys, for those of you that don't know me, I'm Bob Gribble, aka "Grib", owner of MuscleMotorSports in Charlotte,NC. We sell used NASCAR parts including engine parts. We also build race motors from used NASCAR engines for all types of applications. The reason for this post is to get some background on why there's such a bad reputation for SB 2 engines not being good for other types of racing? (The SB2.2 Chevrolet engine was used in NASCAR until this year and is being replaced with the RO7 Motor)
Case in point is I built a 358 cu.in. motor for a guy to be road raced. (you can see the build at http
;//www.musclemotorparts.com/andrew.htm ) We dyno'ed the motor with some pretty good results of 810 HP on the 2nd pull with the rings not fully seated as yet. We were pleased and sent the guy his dyno sheets. The guy came back with a report from his engine builder who said it was "peakey", that all SB2's are "peaky". Now, I'm pleased with the torque curve, pretty flat from 4500 to 8500 all in the mid to upper 500's. So WTF is "peakey"? I'll have the dyno sheets added to the webpage tonight so you can see them yourself. BTW, this guy got a complete brand new engine build (utilizing some used parts) that made 810 HP for $18K. I have built a small block SB2 that made 939 on motor only.
For the life of me I can't imagine what the difference is between a 18 Deg or 23 Deg Chevy motor and the SB2 that would make it undesirable for other types of racing. But, I can't tell you how many times I've heard that the SB2 isn't any good for DragRacing, LandSpeed or Boats or whatever. I think it comes from some old timer engine builders that just don't know the SB2 motor? Now I'm an old timer engine builder and I think most engines are good for what you build them for. Anywho, I'd be interested in your opinion.
Case in point is I built a 358 cu.in. motor for a guy to be road raced. (you can see the build at http
;//www.musclemotorparts.com/andrew.htm ) We dyno'ed the motor with some pretty good results of 810 HP on the 2nd pull with the rings not fully seated as yet. We were pleased and sent the guy his dyno sheets. The guy came back with a report from his engine builder who said it was "peakey", that all SB2's are "peaky". Now, I'm pleased with the torque curve, pretty flat from 4500 to 8500 all in the mid to upper 500's. So WTF is "peakey"? I'll have the dyno sheets added to the webpage tonight so you can see them yourself. BTW, this guy got a complete brand new engine build (utilizing some used parts) that made 810 HP for $18K. I have built a small block SB2 that made 939 on motor only.
For the life of me I can't imagine what the difference is between a 18 Deg or 23 Deg Chevy motor and the SB2 that would make it undesirable for other types of racing. But, I can't tell you how many times I've heard that the SB2 isn't any good for DragRacing, LandSpeed or Boats or whatever. I think it comes from some old timer engine builders that just don't know the SB2 motor? Now I'm an old timer engine builder and I think most engines are good for what you build them for. Anywho, I'd be interested in your opinion.
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