4.8L – The smallest-displacement LS engine (293 cu in); it uses an iron block with 3.78-inch bores and aluminum heads. * 5.3L – The most common LS truck engine (327 cu in), it uses the same iron block with 3.78-inch bores as the 4.8L, but with a longer stroke , (3.62-inch)crank.
What LS engine is lightest?
LSx is probably the lightest and cheapest/cheapest to mod. It is heaver than a LS1/2/3; just the, cast iron, block is 215#s.
What are the LS engine sizes?
LS Family = Gen. 3, 5.7L, Aluminum Block, Car Engines
|Engine Block Specifications|
|Casting Numbers||12550592, 12559846, 12559090, 12560621, 12562174, 12560629, 12559378, 12559846, 12560626, 12561166, 12561168|
|Displacement||5.7L / 346 cid|
|Bore Dia.||3.898 in.|
What are the different LS engines?
LS1, LSX, LSA, LS2, LS9 – there are around 40 different flavours of LS engine ranging from 255hp 4.8-litre donks right through to 650+hp 6.2-litre powerhouses – and that’s without even considering the aftermarket options.
What LS blocks are aluminum?
With the noted exception of the early LQ4 engine, all LS engines have aluminum cylinder heads. The LS2 and L76 are noteworthy in that they are both Gen IV 6.0L aluminum block engines, and that they came from the factory in both cars and trucks.
How much HP can a 5.3 LS make?
The stock 5.3L is factory rated around 320 hp with 340 lb-ft of torque. Most people will tell you 500-550 rwhp is a reasonably safe limit to push a stock bottom end.