CJ V8 swap question

seajay7

Well-Known Member
Joined
Mar 23, 2005
Location
Cary
I just purchased a complete 304 from "Parts for Sale" off this website. Thanks lomodyj!! I have a 1984 CJ7 with the 258 straight 6. I just bought the required motor mounts off of ebay. I intend to upgrade the radiator, as mine is about rotted. The question I have is about the flywheel. I thought I had to change out the flywheel to a specific 304 V8 model. Is this correct? I was looking on ebay and saw an ad for a flywheel advertised for either a 6 cylinder or 304 V8. Are they interchangable? Any help would be appreciated. Plus am I missing any other required pieces in my swap?

Thanks,
Ben
 
seajay7 said:
I just purchased a complete 304 from "Parts for Sale" off this website. Thanks lomodyj!! I have a 1984 CJ7 with the 258 straight 6. I just bought the required motor mounts off of ebay. I intend to upgrade the radiator, as mine is about rotted. The question I have is about the flywheel. I thought I had to change out the flywheel to a specific 304 V8 model. Is this correct? I was looking on ebay and saw an ad for a flywheel advertised for either a 6 cylinder or 304 V8. Are they interchangable? Any help would be appreciated. Plus am I missing any other required pieces in my swap?

Thanks,
Ben
Click to expand...
All the research that I have done tells me that the 6 cyl is neutral or internal balanced and all AMC/Jeep V-8's are external balanced and require a specific flywheel for that size engne.
So yes you should get a 304 flywheel.
Some poeple have gotten away without changing though, I don't recommend it.
 
That's what I have heard as well. But it was worth checking! Thanks for the quick response! I also assume that a 304 and 360 flywheel are different.

I guess I will post on "wanted to buy" to see if anyone out there has one.
 
seajay7 said:
That's what I have heard as well. But it was worth checking! Thanks for the quick response! I also assume that a 304 and 360 flywheel are different.

I guess I will post on "wanted to buy" to see if anyone out there has one.
Click to expand...
If you don't find one at "wanted to buy', try www.quadratec.com orwww.4wd.com and get a new one. You can also get a used one from www.collinsbrosjeep.com.
 
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