1975 Crate big block
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1975 Crate big block
Hello-
I am new to this forum and a prospective C3 owner. Great information- very knowledgeable folks-
I think I want to purchase a 70's convertible and with a standard engine and then have a crate 454 dropped in.
I know that the last year of the big block was 74 but does anyone know if can I just as easily but a BB in a 75 convertible?
Any advice would be appreciated-
Thx
Lou
I am new to this forum and a prospective C3 owner. Great information- very knowledgeable folks-
I think I want to purchase a 70's convertible and with a standard engine and then have a crate 454 dropped in.
I know that the last year of the big block was 74 but does anyone know if can I just as easily but a BB in a 75 convertible?
Any advice would be appreciated-
Thx
Lou
Race Director
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From: Foxfield CO 1970 Convertible
I'm guessing there is no difference in the frame itself, especially in the engine area. However, you will have to replace the radiator since the SB ones are smaller. Also, most small block accessories probably won't fit the BB (fuel pump, fan, pulleys, etc.), but you probably knew that already. Bellhousing would also need to be changed and you'll probably have to beef up the transmission also. But this type of work is what makes things interesting, right? 
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From: Forked River NJ
The motor will drop right in. No need to change the bellhousing as they are the same. You will be putting on new fuel pump and water pump anyway. The brackets for the acc. will be different and a new rad will be needed. Probably a newset of front springs won't hurt either. Many here have converted their post 74 cars to big blocks. Not a real big deal to do. Just costs $$$ as does everything on a Vette.
Racer
Joined: Aug 2004
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From: Chambersburg PA
I agreee with Page 62....If your looking for a car to Mod...get a 73-74. I see this emmissions thing only getting better and as those cars were pre Catalytic converter most all of the new laws will not apply.
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Thanks for the info- Sounds like doing a 74 Mod is pretty much the same as doing a 75. $ and all....
BTW is the Auto transmission on the 74 the same as the 75?
BTW is the Auto transmission on the 74 the same as the 75?
Last edited by LouAZ; Nov 19, 2004 at 06:40 PM.
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Originally Posted by 75rag4sp
I agreee with Page 62....If your looking for a car to Mod...get a 73-74. I see this emmissions thing only getting better and as those cars were pre Catalytic converter most all of the new laws will not apply.
Last edited by LouAZ; Nov 19, 2004 at 04:45 PM.
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Joined: Jun 2004
Posts: 4,652
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From: Lakeland Florida
Hello,
I thought you might be in Arizona with the name LouAZ.
If you are going to rebuild or modify the engine, then the smog laws of the state will prevail. You said you could register it outside of Maricopa county so that probably puts you near Phoenix, Tempe, Mesa, etc.
Good luck finding one.
kdf 1973 454
kdf 1986 L98
I thought you might be in Arizona with the name LouAZ.
If you are going to rebuild or modify the engine, then the smog laws of the state will prevail. You said you could register it outside of Maricopa county so that probably puts you near Phoenix, Tempe, Mesa, etc.
Good luck finding one.
kdf 1973 454
kdf 1986 L98
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Thanks-
I think the way it works in Arizona is that if the car is registered in Maricopa county (Phx, Tempe, Mesa etc...) or Tucson then all vehicles after 1967 need to pass emissions. However, if you register it outside of Maricopa county then you can get a waiver. I do live in Tempe but also have an address in the northern part of the state that I plan to use.
Lou
I think the way it works in Arizona is that if the car is registered in Maricopa county (Phx, Tempe, Mesa etc...) or Tucson then all vehicles after 1967 need to pass emissions. However, if you register it outside of Maricopa county then you can get a waiver. I do live in Tempe but also have an address in the northern part of the state that I plan to use.
Lou
