4.8 vs 6.0 hp difference
For a 4.8 with a 96mm 1.32 ar t6 cam would be 230/230 .600/.600 113.5+3 lsa heads could be either 317s or 862. I am sure 862s would spool faster w the higher compression. Hot side would be 2-1/8 inch piping
is the 4.8 your using a gen 3 or 4?
We just finished a buddy's car in January with a 4.8. Similar to what your asking about. It's got a 228/230 112 cam arp studs and ls9 gaskets with a cast s480 1.10/83 t6 with a 2 1/4 Hotside. It made like 680 or 690 on 18lbs through a th400 and 9in. He had a gt45 on it b4 and the s480 spools a little slower but not much.
It will have a harder time spooling.
Most of the 4.8 turbo cams I do have 212-218 degrees intake duration.
The cam I already have, the 4.8 I have, the 1.32 ar s475 I have on the way already. Friday after my 3rd pass I melted a piston and my choices if fixing are a set of 8:1 dished wiseco pistons for the 6.0 that I already have or a 4.8 that I already have. Im running pump gas and meth will be added when running again. Almost feel it will spool the same no matter what way I go.
If i didnt already have the cam, id cam it accordingly. But this is why I had to ask, needed some input from everyone who has done these two together.
Yeah ive read his setup, he has the small t4 83mm 1.10 housing so it would spool a lot faster.
My setup so far is 02 4.8 with 243 heads 227/231 623/598 114+5 LSA and a S475 T6/96mm 1.32 backside!
Again this is what I already have, worse comes to worse i'll spray the damn thing!
Again this is what I already have, worse comes to worse i'll spray the damn thing!
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Verdad Gallardo Awesome i cant wait to hear how it runs and does, its definity gonna be a beast when spools up
With a 4.8 and a PT7675/Turbonetics 7675 or 7875 (I highly recommend these over the TC series and if you can swing the PT7675 with a .81 AR housing for the 6 speed you'd be IN BUSINESS), Vic jr. on 91 octane this is the camshaft profile I'd recommend if the car was full weight with a 3.23-3.55 rear gear:
278/286@.006"
226/231@.050"
147/149@.200"
113LSA 107ICL 119ECL
226/231 .605"/.598" 113+6
278/286@.006"
226/231@.050"
147/149@.200"
113LSA 107ICL 119ECL
226/231 .605"/.598" 113+6
Well looks like my 6.0 that torched the piston torched the cylinder wall as well. So its on to working with this 4.8. With the huge the 1.32 housing.
Compressor choke. It is determined by the isentropic efficiency of the compressor dropping low enough that it cannot flow any more air. Increased heat output lowers air density so power making capability reaches an asymptote, or choke point. A turbo will almost always make more power on a smaller displacement engine.
