Which is the best engine block for drag racing?
Which is the best engine block for drag racing?
The block architecture of the LS series makes for an extremely strong engine. The aluminum LS engine blocks are nearly as strong as the Gen 1 and Gen II cast iron blocks.
How big of an engine do I need for drag racing?
For starters, if a production 400 block is already .030-inch over, consider it used up. You might be able to get away with .040-inch overbore if it is an engine for street use, but if you’re planning on racing, you’re asking for trouble with a cylinder wall that is machined this large with a Siamese-bore block.
What makes an LS engine better for drag racing?
While the classic small block Chevy uses heads with the valves at a 23-degree angle, the LS valves are positioned at 15-degrees. What this means, is that with large bore and short stroke, the LS engine can make more power. What the different angles equate to is a straighter path from the intake to the cylinders, resulting in more port velocity.
Is it worth it to rebuild an old 350 short block engine?
The cost of working over a “recycled” LS-style engine compared to the cost of rebuilding a worn-out old school 350 short-block is becoming quite competitive, even if you consider the additional costs of adapting the late-model engine to an early chassis.
The block architecture of the LS series makes for an extremely strong engine. The aluminum LS engine blocks are nearly as strong as the Gen 1 and Gen II cast iron blocks.
For starters, if a production 400 block is already .030-inch over, consider it used up. You might be able to get away with .040-inch overbore if it is an engine for street use, but if you’re planning on racing, you’re asking for trouble with a cylinder wall that is machined this large with a Siamese-bore block.
How tall are the blocks on racingjunk.com?
AVAILABLE IN 9.025 AND 9.325 DECK HEIGHTS 400 OR 350 MAINS VARIOUS BORE SIZES AND… all these blks start with oven bake shot blast tap mag pressure ck sonic ck then r cnc machined on our rottler f68a cnc…
While the classic small block Chevy uses heads with the valves at a 23-degree angle, the LS valves are positioned at 15-degrees. What this means, is that with large bore and short stroke, the LS engine can make more power. What the different angles equate to is a straighter path from the intake to the cylinders, resulting in more port velocity.
