![]() ![]() There are other factors to consider too, like camshaft loading and heat management.įor instance, by moving the adjacent firing cylinders nearer to the water pump, it means the combustion chamber stays relatively cooler, allowing you to run slightly more timing without detonation. The swap can also reduce cam twist from front to back-with the adjacent cylinders firing nearer to the front of the engine (and timing chain), you’ll mitigate valve timing fluctuations. and feature new leading-edge lobes designed by one of the world’s best lobe designers to meet Summit Racing’s precisely spec’d valve event and lift targets. These Summit Racing 4-7 Swap Camshafts for the SBC are made in the U.S.A. Thanks to benefits like better mixture distribution, when you change the cylinder pairing from 5/7 to 4/2 it can help you pick up more power in the midrange and a small amount up top with no other changes. Never heard of it? Basically, instead of the traditional 1-8- 4-3-6-5- 7-2 firing order, the four-seven swap makes it 1-8- 7-3-6-5- 4-2. A four-seven firing order swap is becoming an increasingly popular upgrade for engine builders looking to squeeze more performance from a Small Block Chevy engine. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |