@ 5 lbs of boost is an intercooler needed?
 

I know all the big hp guys need them but the blowers are spinning harder and beating up and heating the air.
With only 5 lbs of boost from a turbo would an intercooler be needed? Thanks for any info, RM

No, as long as you are running lower compression, 9:1 or little less, and some decent fuel, 91 octane or better, you will definitely not need an intercooler. I have run 8-9 psi of boost, on 93 octane fuel, with no intercooler for over a decade with no issues.

thanks for the info. I plan to run an intercooler as I can’t get good fuel where I am and my plan it to turbo a bone stock 5.3L LS1 engine. Which is I’m sure 9 to 1.

When I first installed my centrifugal super chargers I was told I did not need a intercooler because I was boating in cooler water and not building much boost (5lbs) so I installed them without the intercoolers , ran the boat not happy with the performance I added intercoolers and picked up 6mph.

what engine you running bbc?
what intercooler are you using? Thanks

https://cimg9.ibsrv.net/gimg/www.off...68d6ca7d18.jpg
BBC I made my own did not like anything that was being offered

that’s a clean looking set up.

The type I’m looking for is an in-line Intercooler as I plan to use the oem intake throttle body which has a large opening to the throttle body at the front of the intake.

im curious how much a centrifugal blower heats the air vs a turbo and Whipple style blower...

About 12 years ago I built a street car engine, sbf with a Vortech centrifugal. Was a healthy setup with 9:1 designed to run on 93 pump gas. I had a custom cam ground with passing strict ny dyno testing emissions. Basically the cam had no over lap. Plan was to run 10-14lbs. Didn't work out that way. Air temps were high 100s-200ish. The engine would detonate instantly. Kept putting larger blower pulleys on to lower boost. Got to the point I ran out of pulleys to use and had a custom larger pulley made. From memory, I got it down to 5-6 psi and it still detonated like crazy. Had to pull engine in short time do to black death on the pistons.

Bottom line, engine had to much cylinder pressure and today's pump gas is junk. I learned a lot from that build. Boost is not everything.

I don't know what the temps are on the other set-ups but with mine after a hard run you can not touch my charge pipe so it is at least 150'F

What do you mean you're sure it is 9:1? The LS1 is 5.7L, and 10.2:1. There are many different 5.3L Ls engines with compression anywhere from 9.5:1 - 10.2:1, none are 9:1 from the factory.