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  1. PORT LS6 HEADS OR NOT

    Engine Mods
    I recently purchased 6.0 short block from Thompson Motorsports with cam package. I have 243 heads, my original thought was to port and polish the heads by them for $850. I've read that ls3 heads will give the same gains has porting 243 heads. Now I'm debating if I should port the heads or sell...
  2. Mont Motorsports - BLACK FRIDAY SALE - 11/25 - 11/27

    Mont Motorsports
    It's already that time again for the largest sale of the year - BLACK FRIDAY As always, we want to hear from our customers what you want to see on sale. The more we hear from you, the more we will put on sale! Now's the time to stack those parts up for the winter build, or have your wife get...
  3. Dyno results from ZR1 poreted blower doing my CTS-V now wondering what I will gain.

    Engine/Supercharger
    A few mons back I had a customer that had a local shop do a larger build on his ZR1 with very disappointing power for mods done. Another sad note the shop that built the car promised 800whp and pushed the tuning shop to make the MD dyno read 800whp even though it was only doing 630hp on there...
  4. To port or not to port?

    Engine/Supercharger
    Does porting make such a huge difference? I got Airaid to 2.5 upper 9.5 lower cat delete, SS headers x pipe to stock ex. ice box, bigger hx, d3 lid spacer, custom LS9 heads, GT9 cam. Some other stuff can't think of it... What would be better? Port TB or blower snout? or both? Why? Thx
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