Hi everyone. I am new here and have searched quite well for an answer before asking my next question, but there is no apparent answer in the search engine. Some background:
I am doing the famous 4.9 swap and am going carbed for many different reasons, but rather than explain why, IŽll keep it simple...I want to and have no other options ($$$) at this point.
I have a 1985 fiero 2.8 with a 4 speed manual tranny. I purchased Chris West's brackets, flywheel, clutch, etc, etc. and I purchased the Holly 4412 /500 cfm high performance 2300 series carb, as well.
The engine I purchased is a 94 Deville. Unfortunately it lacked the distributor when it was delivered, and don't have access to any where I am at, so that creates part of my dilemma and as a result, the base for my question.
I have a 1990 4.5 engine sitting next to me with a perfect distributor unit. Similar to this one:
Do you think this distributor will do the job for replacing the original?
I understand I need to modify an olds 307 distributor shaft and add the ignition module, induction coil and module harness to the caddy distibutor... but I donŽt know if this one will work:
Will this 4.5 distributor with the changes from the olds distributor do the job for me? I understand both the 4.9 and 4.5 distributor are the same, but do correct me if I am wrong.
Thanks for any help I may get from you guys and I look forward to your input .
I will keep you posted on how things evolve as the miles roll by.
Thanks Guys! I appreciate the leads and will look into them. Mabye I should be more direct: Will a 1990 Cadillac 4.5 distributor fit and operate in a 1994 4.9?
This being the case, I should be able to adapt all the olds electicals into this distributor. Now having that buckled up and if it were the case, will the olds rotor being announced work for the modification of the 4.5 distributor?
Thanks for bearing with me guys, but just trying to get this right....
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07:36 PM
fieroguru Member
Posts: 12111 From: Champaign, IL Registered: Aug 2003
No, CARB will not be a problem for me. The car will not be registered in California. Thanks for the help and if there are any further pointers, they are welcome.
I was talking to a friend who gives me to understand that you need to get an earlier 4.1 distributor, because of the difference in the plate thickness that mounts the module on the 4.5 rotor. Apparently it will not turn. It will jam on the module but the 4.1 will turn just fine
I was talking to a friend who gives me to understand that you need to get an earlier 4.1 distributor, because of the difference in the plate thickness that mounts the module on the 4.5 rotor. Apparently it will not turn. It will jam on the module but the 4.1 will turn just fine
Hope this helps
Arn
So I shouldn' t worry about this then...
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07:57 PM
Aug 2nd, 2007
fieroguru Member
Posts: 12111 From: Champaign, IL Registered: Aug 2003
I think you're talking about the fuel injection application?
The carb application is different. I know the carb applications are different but I'm no expert. It might be a fit issue with the Oldsmobile internal shaft. Somebody out there must have installed a carb on their 4.9
Arn
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08:59 AM
fieroguru Member
Posts: 12111 From: Champaign, IL Registered: Aug 2003
I think you're talking about the fuel injection application?
The carb application is different. I know the carb applications are different but I'm no expert. It might be a fit issue with the Oldsmobile internal shaft. Somebody out there must have installed a carb on their 4.9
Arn
Mine was an aftermarket EFI (holley projection) application so I did the conversion to mechanical/vacuum advance on the dist.
Thanks Arn And Fieroguru for your input and interest in helping me out here...don't want to sound like a moron but would this mean yes I can use the 90 4.5 distributor or not? I appreciate you bearing with me on this...
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04:19 PM
fieroguru Member
Posts: 12111 From: Champaign, IL Registered: Aug 2003
Please be careful. The 90 distributor is the same as the 91 4.9l Earlier 4.5 are the same as the 4.1 1990 is the only port injected 4.5 excluding allante. 1990 uses the longest rods of any of the 4.5's and the same pistons as the 4.9L... I think you would want an 1985 to 1989 distributor. But then again, the throttle body is pretty simple to hook up instead of the port system.