Anyone purchase MMR's fully done head porting for the GT350 heads?

[stang99svt]

With claims on the site for up to 95HP increase with fully done all the "fixin's" heads anyone have real world observations?

Ford Modular 4.6 & 5.4 Cylinder Head Porting [PORTING] - $950.00 : Modular Motorsports, Home of the worlds fastest Fords

Modular Motorsports Ford Modular 4.6 & 5.4 Cylinder Head Porting [PORTING] - Send in your 4.6 or 5.4 SOHC, DOHC or 3 Valve cylinder heads and have the Ford Modular World record Holders do their magic. The Worlds fastest Mustangs rely on MMR cylinder head porting to put them in the winners circle...

www.modularmotorsportsracing.com

 

[honeybadger]

You won't find many proponents of MMR engine building services on this board. Too many bad experiences.

RPG has really nice porting services from what I've seen. The flow numbers are great.

I'd also recommend MPR Racing Engines in FL. Tim built my engine and had fix some head issues from RGR and I've been very happy. Top notch work from a family-owned shop.

Should also note - head porting won't get you much power at all on its own. The intake is the restriction, not the heads. You'll need to make some other investments while you're at it. My engine before I removed VCT made 540whp with long tubes, e85, catless mids, and ported heads. I detuned to 518 for a more conservative race tune on the VCT-delete motor - same heads of course

 

[stang99svt]

Good recommendations thank you.
At the same time, individuals have seen/recognized these type/level's of performance enhancements with the build out of NA heads. (?)