Swapping intake manifold & throttle body on a 5.3

[cmatt]

With an otherwise stock motor, is there any benefit to swapping a truck 6.2L intake and a Corvette/Camaro (I believe) throttle body onto a 5.3L?

I searched and didn't see any info on it. Of course, that could be operator error.

 

[swathdiver]

With an otherwise stock motor, is there any benefit to swapping a truck 6.2L intake and a Corvette/Camaro (I believe) throttle body onto a 5.3L?

I searched and didn't see any info on it. Of course, that could be operator error.

Won't fit as they use different heads. There's really nothing better for making torque and horsepower where a heavy truck needs it than the stock intake.

 

[avalonandl]

Better off with a Hypertech or Diablo tuner....

 

[Big Mama]

I was just watching a show where they took a 5.3 and bored it to a 5.7 and put on an ls1 intake and tb but I missed where he talked about the heads. It was Ian Johnson’s new show 4 wheeler.

 

[iamdub]

As the others have said, no benefit at all. As James mentioned, the 5.3 has cathedral port heads whereas the 6.2 has square port.

Boring a 5.3 to a 5.7 and running an LS1 intake makes sense since the LS1 is a 5.7 and has cathedral ports. But, the car manifold just shifts the power band up higher in the rev range. On a truck, you're better off running a truck manifold even on an LS1 (or 5.3 bored to LS1 specs).

 

[JJKNIGHT]

Well I'm about to find out!

Getting a GPI Ported L86 Intake with a Katech 87mm TB installed and a tune in January, parts are in.

I'll make sure I post the differences.

JJ

 

[swathdiver]

Well I'm about to find out!

Getting a GPI Ported L86 Intake with a Katech 87mm TB installed and a tune in January, parts are in.

I'll make sure I post the differences.

JJ

You going to get some baseline runs at the local drag strip first?

 

[JJKNIGHT]

Here's their add

 

[JJKNIGHT]

You going to get some baseline runs at the local drag strip first?

Naahhhh don't have any close by. I'm in the woods brother. They are going to Dyno it to the tire. So I'll see exactly what it does.

 

[JJKNIGHT]

Well my new girl, DYNO'd 305/345 at the wheel. Been averaging BEST of 26.5 on the highway. 19 around the house on 93 SU2000.
Stainless Works Headers and xpipe duals installed couple of weeks ago.
Having some sensor issues but I'm working thru it.
She really sounds great though.
JJ