If you don't mind me asking. How much did the shop charge you?

Its true what wolf said, mandrel benders aren't very common. Though, there is a guy who has one local to me.

 

Just sayin'...

 

Quite a bit. I paid for header install, the dual exhaust and two mufflers/ 4 inch tips. 550ish. It's strong but i just don't feel like I got my money's worth to be honest.. I didn't even read anything about mandrel vs crush until I looked at the pipes and everyone is saying if its crushed I might as well have done a 3 inch all the way back because the bends would crush down to 2.5 anyway. I wanna think that using 1 7/8 made me lose that mid range but I'm pretty sure it's the 2.5 pipes and crush bends

 

Yea but that's at the primaries in the headers. I can't find it now but I watched a few vids where they dynoed crush bent vs mandrel and there was a difference in power and noise

 

For those that are curious about primary tube sizes, and horse power/torque gains & losses this a really good older thread to read. SBC and LS engines are different birds when it comes to performance gains and exhaust. I wouldn't read too much into dyno results with SBC engines. 1 5/8" use the be the way to go. It is no longer the case with LS engines. Every 1 5/8" header we have had on the dyno usually ends up glowing red from restriction lol.

Stock Motor 1 3/4" Vs. 1 7/8 Engine Dyno Results!! - LS1TECH

Thanks
Sean

 

When will you guys put the near stock 5.3 on the dyno with your 3 inch true dual? I wanna see if me going 2.5 was worth it or if in the future ditch it for your kit

 

Thought they did already, or was that another truck??

 

Holy crap, quite the controversial thread there

 

They did the dyno with a cammed 6.0 didn't they? I haven't read through this thread in a while but I think they said they'd put LT and their 3 inch true dual on a stock 5.3 and see if the 3 inch tubes were too big

 

The 6.0 they have swapped in i thought was basically a stock lq4, may have read it wrong though