So. I just picked up a 65 f85 deluxe and it came with the 225 1 barrel (which has been upgraded to a 2 barrel. I do happen to have an already rebuilt edelbrock 1406 sitting around. Would there be any real advantage to picking up a intake and putting that on? The car did come with a 455 and most of the parts to build it but I would love to take my time and do that right and get the 225 up and running stronger than it is now. It does run but takes about 10 minutes of coaxing to run steady. I was debating opening up the exhaust a little (maybe a dual exhaust if that makes any sense

Anyways, this is my 1st post and I am somewhat a newbie at a lot of this stuff. Worked on cars my whole life to some degree but its been 30 years since I touched a carb. So I expect I will be asking a lot of stupid questions.

 

A 500 CFM (1403) would be a better choice. I assume you are changing the intake to match.

 

Timing chain tensioners were weak on those engines. Consider doing a chain and tensioner. Unique distributor rotors also.

 

I'm pretty sure that the 225 doesn't have a timing chain tensioner. It's a Buick V6.

 

It uses a rubber? block on a spring like an odd-fire 3.8L 231CID, a rather weak set-up at best. They will make a knocking sound when failing.

 

That's actually a damper, not a tensioner.

 

Personally .... if you are going to do the 455 in the long run, I would leave the 225 alone and run it the way it is. Go through the carb if you think it needs it. Taking 10 minutes to warm up and run good is very typical for cars from that era. I would not worry about that at all. I dont think you will notice any performance improvement with a carb change.

One of my neighbors when I was growing up had a book business and they had a 65-66 or so Buick wagon with that engine in it. They used to load it up with books to go to trade shows and I remember it actually running pretty darn good.

 

Ok, I'll modify my suggestion...the OP should consider replacing the "damper" which uses a spring to maintain tension.