Piston Slap: LSX + Porker = WIN

Sajeev Mehta
by Sajeev Mehta

Long time readers of this series know I’m a big fan of modifications to achieve a vehicle’s maximum potential. And there’s no better example than a switch to GM’s now legendary LSX small block V8. To prove the point, I saw an LS6 powered, 1980s vintage, Porsche 911 partnered with a LS1 powered 914 at the 2005 Houston Autorama. Lo and behold, that 911-LS6 arrived at a recent Sunday morning cruise-in. So I got to touch it. And then it started up for me. It was Epic.


The LS6 sounds surprisingly similar to a Porsche boxer at idle, proving how important an exhaust design is to a vehicle’s overall demeanor. I spoke with the owner/creator/fabricator and got the download: the LS-swap saves 56 pounds off the rear end, but the difference is actually 21 pounds after the conversion to a water cooling system with a radiator in the rear wing.

Oh, and this 911 has a supercharger too. Which does nothing for weight savings or handling, but should make for some good times at the drag strip. No matter, the website with more details is here (LINK: www.toy-jet.com) and while it’s not the easiest read, check out the 914 with an LS swap too.

So ask yourself, could I beat that car in my ride? And then remember why the LSX swap is made of WIN.

(Send your queries to mehta@ttac.com)

Sajeev Mehta
Sajeev Mehta

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  • Ronnie Schreiber Ronnie Schreiber on Apr 14, 2010

    FWIW, supposedly the engine bay of the Lotus Elise was designed to accommodate all FWD drivetrains in production at the time (mid 90s), including the Modular V8 Ford put in the Continental and the Northstar V8 in the FWD Caddys. I don't know if the supercharged LC3 version of the Northstar will bolt up to the FWD 4T80 transmission, but ~450HP in an Elise could be fun.

    • Porschespeed Porschespeed on Apr 14, 2010

      Hennessey is supposed to be doing a 700+ HP V8 Elise. We all know Hennessey's, umm, colorful history, so take that for what it's worth. But I have heard from some who toy that it would fit. Superchargers can always be relocated anyway. It's not a tall unit, and it can be replaced with a less tall unit if it really has to be done..

  • Johnny ro Johnny ro on Apr 14, 2010

    I was a gas jocky in the 60s and 70s at family station. Guy pulls up in VW van, around 1970? Fat tires. Up a bit too high in the air. -Gimme the hi-test pump. I will get it. I got it. Let go. -why. - its special. -special? -listen to this. 230 effen horsepower pal. Ya heard uh Porsche? Thats a Porsche engine in there. Revs up the flat six he grafted in there, watching me out side window, me a skinny pimply kid with greasy long hair. Whole thing rocks and makes lot of noise. He does a burnout leaving the station. Next car in was mid 20s babe in a dark green GTO convertible, top down. Wearing a bikini. I gaped and gawed while I washed her windshield. I liked the GTO better.

  • 3SpeedAutomatic I'd like to see a sedan:[list][*]boxy in shape, avoid the windshield at a 65º angle BS[/*][*]tall greenhouse, plenty of headroom to sit straight up in the back seat[/*][*]V8, true dual exhaust, sans turbo, gobs of torque[/*][*]rear wheel drive, fully independent suspension, accommodate a stretched wheel base (livery service would go nuts)[/*][*]distinctive, tasteful colors (black, navy blue, claret, etc.)[/*][*]more substance, less flash on dashboard[/*][*]limited 5 yr run, get it while you can before the EPA shuts you down[/*][/list]
  • Bd2 Mark my words : Lexus Deathwatch Part 1, the T24 From Hell!
  • Michael S6 Cadillac is beyond fixing because of lack of investment and uncompetitive products. The division and GM are essentially held afloat by mega size SUV (and pick up truck GM) that only domestic brainwashed population buys. Cadillac only hope was to leapfrog the competition in the luxury EV market but that turned out disastrously with the botches role out of the Lyriq which is now dead on arrival.
  • BlackEldo I'm not sure the entire brand can be fixed, but maybe they should start with the C pillar on the CT5...
  • Bd2 To sum up my comments and follow-up comments here backed by some data, perhaps Cadillac should look to the Genesis formula in order to secure a more competitive position in the market. Indeed, by using bespoke Rwd chassis, powertrains and interiors Genesis is selling neck and neck with Lexus while ATPs are 15 to 35% higher depending on the segment you are looking at. While Lexus can't sell Rwd sedans, Genesis is outpacing them 2.2 to 1. Genesis is an industry world changing success story, frankly Cadillac would be insane to not replicate it for themselves.
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