350 / 425 carb

1972madison · July 28th, 2007, 12:35 PM

i have a 1972 350 rocket in my cutlass with a 4 barrel holley carb and im wondering if that carb will fit on a 425 super rocket, cuz im switching the engines.

442Harv · July 30th, 2007, 07:51 AM

If the intakes are both spread bore, and carb is, it will work. I just changed my 72 350 to 455, but I have the Qjet, and I checked my book and jets and rods are all the same. I checked the older 425 ones like 66-67 to a 330 of those years, and they use the same jets size, but the rods are one size different, very little difference. You can rejet it if you need to? Probably will work OK as is.

1972madison · July 30th, 2007, 01:25 PM

k thanks

July 28th, 2007, 12:35 PM	#1 (permalink)
1972madison Member Join Date: Jun 2007 Posts: 36	350 / 425 carb i have a 1972 350 rocket in my cutlass with a 4 barrel holley carb and im wondering if that carb will fit on a 425 super rocket, cuz im switching the engines. __________________ [SIGPIC][/SIGPIC] -1972 442 with a 425 super rocket-

July 30th, 2007, 01:25 PM	#3 (permalink)
1972madison Member Join Date: Jun 2007 Posts: 36	k thanks __________________ [SIGPIC][/SIGPIC] -1972 442 with a 425 super rocket-

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July 30th, 2007, 07:51 AM	#2 (permalink)
442Harv Registered User Join Date: Mar 2007 Posts: 119	If the intakes are both spread bore, and carb is, it will work. I just changed my 72 350 to 455, but I have the Qjet, and I checked my book and jets and rods are all the same. I checked the older 425 ones like 66-67 to a 330 of those years, and they use the same jets size, but the rods are one size different, very little difference. You can rejet it if you need to? Probably will work OK as is.