There are many moving parts to this story and we will call this part 1. If you know about the Chevrolet LS family of engines we are off to a good start but there may remain some confusion on the whole is it a car engine or a marine engine deal? However, I am willing to bet you know what a Corvette or Camaro is, and for those that haven’t put the correlation together yet the LS engine is Chevrolet’s choice for modern engine design and horsepower. It’s also the choice of a number of marine marinization companies and engine suppliers like Ilmor Marine in all the new Master Craft products to Indmar Marine and a host of others. The LS engine has been behind the performance engine resurgence of the modern era. These engines can be found in just about every kind of racing, sportsman Car, hot rod, restorations and even pleasure boats today.

What we haven’t seen yet is the aftermarket address how to take this powerful production engine and turn it into the perfect marine repower option. This is a significant upcoming option and with one very big difference from the traditional repower options: PRICE. You can buy a motor from your local Chevrolet Performance Parts dealer, a BRAND NEW all aluminum 525HPEngine #19301360 for $7589.00 and a engine management controller(ECU/Harness) #19259261 $1199.95 This engine Delivers 525 horsepower at 6,300 rpm and 489 lb.-ft. at 4,400 rpm, this is the top of the line for factory GM crate engines at least from a naturally aspirated standpoint. As delivered, the LS376/525 includes the Intake manifold, with the injectors, fuel rail, throttle body, ignition system, valve covers, and oil pan.

Now match that with Hardin Marine’s new line of products such as an entire billet engine accessory drive kit including stainless steel sea pump, alternator, p/s pump, tensioner, Stainless steel headers, bell housing, drive coupler, offshore engine mounts, polished stainless steel closed cooling system, starter, aluminum circulating pump, and starters for less than $15K!

This simple and straight question is why aren’t the major power plant suppliers leveraging the technology of General Motors like they once did? Well we will cover that in a story in the coming weeks. What we want you to do now is just think about the possibilities of a lightweight, professionally manufactured, fuel injected new 525HP power plant dressed for less the $15,000 bucks and thats the 525HP version. If a 430HP is all you need then you can knock a couple of thousand dollars off that price. Just imagine if you could buy this type of power matched with a drive engineered to handle it live the Bravo just how much more affordable boating could be for everyone.




  • Power: 525 hp at 6,300 rpm, 489 lbs/ft of torque at 4,400 rpm
  • Displacement: 376 cid, 6.2L
  • Bore x Stroke: 4.060-inch x 3.620-inch
  • Compression Ratio: 10.7:1
  • Block: Cast aluminum with 6-bolt cross bolted main caps
  • Camshaft: Steel hydraulic roller tappet
  • Cam Lift: .525-inch Intake / .525-inch Exhaust
  • Cam Duration at .050-inch: 226 degree Intake / 236 degree Exhaust
  • Lobe Separation: 110 degree
  • Cylinder Heads: Aluminum L92 style ports