Quote Originally Posted by Valencia View Post
600 Holley on a 253 will be to big Rob honestly Edelbrock performer manifold with a 450 Holley with a nice mild cam would be the go had this combo many years ago on a Kingswood van went quite well
Frostman will vouch for the 450. 600 is too big for sure. quaddy off a 253 blue motor will look the part