Hi Guys! First post. My Cutlass project 455 replacement has been going on for years. I bought the kit from Cliff in 2007, I think. Finally rebuilding the core I obtained. 455 has aluminum heads, XE274 cam (230/236, 520/523), Performer intake, but using 71 442 exhaust manifolds and no headers. Followed #3 recipe but question primary rod and jet combination. Original rod was a 49 and jet a 74. I was going to put in 77 jets to maintain as closely as possible the recommended size spread between the rod size and jet, but started thinking I was doing this backwards and 77's are just too big. I went ahead and ordered the 44 rods in the parts section which came up as a 43 rod when added to cart for my carb #. What combination of sizes should I be shooting for? 455 is not installed at this time. I also have a 2004R tranny I plan to swap in which I don't have linkage for, and Haven't picked a rear end ratio yet. No strip use for this vert. Any ideas? Thank you!
