QA1 Pro Coil High Travel Coil-Over Spring - 2.500" ID 10.0" Length 350 lb/in Spring Rate - Single Pigtail BLOWER-PF-IDA Well this is the fix

Well this is the fix for the problem

circle track breather style

Idle Mixture Screw Gasket

Holley 4150 / 4500 Carburetors

QA1 Pro Coil High Travel Coil-Over Spring - 2.500" ID 10.0" Length 350 lb/in Spring Rate - Single Pigtail BLOWER-PF-IDA Well this is the fixAvailable in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of high travel springs with a silver powder coated finish. Made in the USA, these 2" I. D. high travel springs are manufactured from specially designed high tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter. As a result, these springs are lighter and have increased travel due to the larger distance between the coils.