Bismarck

iTrader: (1)

Hello Folks,

I have purchased a Cadillac ESV which is basically an all wheel drive Cadillac version of the 1500 series Suburban with the 6.0L Vortech.

The car stock had 6.0L 6000 H.O. V8: 345 hp at 5200 rpm, 380 lb-ft torque at 4000 rpm.

I then added the stuff I knew about... brakes, suspension, and then the motor: A magnusen roots type supercharger with 6.5psi of boost and a Full exhaust system, Headers to tail. The car runs great, though I have no idea how much power I am getting at the crank.

Q1) Can anyone make an educated real world estimate here please?

Now the Questions:

Q2) IS the cam in this car different than others? How does it make more power then the other GM cars like Suburban or GMC? about 10 more?


I am ordering the following:

- AFR 62cc Heads (225cc)
- 9.5:1 Compression JE Pistons (thinking baout 9.0:1)
- Stan Stroker crank for a 402cuin with their rods, etc

Q3) The builder is telling me to go 0.030 over bore and get it to 408. Is this safe or worth messing with the block?


Q4) Does anyone know the stock Cam's specs. Considering a cam of stock duration, but just a bit more lift. Any suggestions? Or should I just leave the stock cams in.

Will have to go to a smaller pulley as the boost will drop a good bit with the increased displacement and free-er flowing heads. Would have even considered 8.6:1 compression ratio pistons but I just think the Magnuson is too eak of a supercharger and will not be able to supply enough boost.

Q5) any opinon here?


Q6) With the above setup, what do you think the naturally aspirated motor make as the blower will add 45% to that.

Q7) is there anything else that you would recommend? By the way this is a daily driver and I tow 2000lbs with it once a month, though when towing I do not abuse it...

Many thanks in advance

gonzo 6.2

iTrader: (8)

I think you are on target but see who agrees 10.1 compression with a good tuner and you nailed it.We like to see folks here not afraid to spend money to get the best

Bismarck

iTrader: (1)

You mean to build it with 10:1 compression pistons?

gonzo 6.2

iTrader: (8)

You can do it with pistons or heads to achieve 10.1 is what you will fing the radix guys here believe in.

JimS

I've been advised that the Radix will barely support the 402 and that 408 is too much. Also been advised that if I insist on a 402 then 10 to 1 cr is mandatory and not a problem with a good tune. Suggest you ask around before you do the 408 or just scrap the Radix and get a turbo.

quicksilverado

iTrader: (8)

If you don't have a 4l80e. You need to add that to the list.

budhayes3

iTrader: (19)

Stock cam is 196/207 .467/.479 116LSA, that could definitely be improved upon.

Bismarck

iTrader: (1)

Wow many thanks folks, for some reason I was not getting the email alerts...

Anyways, I think I may be asking too much of the Radix. If I am investing all that in a long block, I guess I should not limit to Radix's capability. I think after everything I have seem , I think the Radix guys are blowing smoke when they say with a 2.9" pulley I will see 7psi on a 408 motor.

I think the best is to go with a 8.6:1 pistons and later do something about the induciton. Even with the stock 6.5psi on the motor with just headers I do hear pinging pretty often.

I do need help though on the tranmission. What is a 4|80 and how would it fit the Escalade? Where do I get it and will it match, I mean all the electronics, the trailer tow mode?

jerome

it is the big brother of 4L60E. you need a retune, and some modifications to make it fit, but with a special harness all electronics will work. speed engineering makes new crossmembers for the trucks to make it fit, but i dont know if that would work for your application. check out finish line performance for a built transmission to hold the power. a level 5 4l60e may be what you need, because a 4l80e could take some work and money fitting in there.

Bismarck

iTrader: (1)

Thanks Jerome...