Name: FAST LSXRT Intake Manifold 146105B for Rectangular Port PORTING SERVICE ONLY - Gwatney Performance
Brand: FAST
SKU: FST-146105B-Porting
Price: 350.00 USD
Availability: InStock

FAST LSXRT Intake Manifold 146105B for Rectangular Port PORTING SERVICE ONLY

$350.00

GPI Hand Porting
Please include a copy of your order confirmation with the manifold and ship to:
Gwatney Performance Innovation
ATTN: PORTING SERVICE
200 Municipal Dr
Jacksonville, AR 72076
501-985-4947

In Stock

Customer questions & answers

Same question as "P. Abreu" -- in my case, porting a FAST High HP 146103B -- instead, with a BBK 102mm throttle body.

Q Same question as "P. Abreu" -- in my case, porting a FAST High HP 146103B -- instead, with a BBK ...... Read more answer now
Asked by Jonathan on November 27, 2021 11:37 pm

A Same answer given below, and unless you're going to be turning over 7k rpm I'd stick with the ls3 ported rod mod

What kind of gains are expected over the unported LSXR? How does a ported LSXR compare to a ported and rodded LS3? Keeping money out of the equation and assuming you ran a middle of the road 95mm TB on both of them. That way neither has a real advantage or disadvantage. Per the GPI LS3 manifold shootout there was minimal advantage over the ported and rodded LS3 for the LSXr. I'm wondering if this will make enough of a difference to make the decision for the LSXr with porting over the LS3 with rods and porting. Again let's just talk performance and not cost.

Q What kind of gains are expected over the unported LSXR? How does a ported LSXR compare to a porte...... Read more answer now
Asked by P. Abreu on March 4, 2020 9:29 pm

A On a stock cubic inch NA build, porting is only going to be single digit power gains and with a 95 mm tb, performance will likely be no better than a ported and modded LS3 intake. Thats what we saw in our testing.

FAST LSXRT Intake Manifold 146105B for Rectangular Port PORTING SERVICE ONLY

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