This is for my Yota..I posted in the yota section but I figured you guys might have some more insight. I had a pretty built 4.3 in my truck before....It was probably a 240ish 4.3. I just bought this motor from a buddy. He had it built at a reputable shop out in AZ. I am guessing it to be about a 330 or so horse motor. This is from plugging in what I could in on desk top dyno. Do you think this is about right. How many horse have you guys seen out of a 4.3? Here are the specs:Balanced rotating assembly
Gasket Matched Intake
Fully Packed and Polished Heads
202 and 164 intake and exhaust valves
Heads are cc'ed
Crane Roller Rocker Arms
Crane Valve Springs
Iskey Roller Cam and Lifters 209/ .465
True Roller Timing Chain
60 over forged flat-top pistons
10:1 compression
S10 Headers
HEI Distributor
Fel Pro Gaskets

And another thing....Is there a difference between a 4.3 throttle body and a 350. I think there isn't but I want to have my ducks in a row before I install this new motor. I think they are both 680 CFM but if the 350 flows more go juice then I will feed it to the new motor.
Thanks
Rick