[NHRABill]

Originally Posted by analogkid455

Yeah I thought about higher gears but the thing barely gets out of it's own way with 3.73's. Maybe runs high 15's in the 1/4 mile. That's why I want to put a 350 Olds in it with 2.73 gears. Should have more torque to the wheels than the 307 and 3.73's. And built the right way will get way better MPG. I'm going to shoot for mid 30's.

May be awhile since the money situation is crap right now for me.

On a high note, putting headers and true dual exhaust on it should pick up some MPG (maybe 2-3) and I can use it with the 350 Olds when I get it in there.

The stock exhaust is horribly restrictive on these cars but I guess it wouldn't matter much in cruise. IDK.

Just do a cam swap on the 307 with a mild grind giving you better low end power (aka RV cam) you can probably get all of the parts for under $200 bucks including gaskets and you will have a nice ride with slightly better performance and mpg's.



Edit:
After taking a closer look at your engine:

http://www.442.com/oldsfaq/ofe307.htm


depending on the vin code and your specific model if you have the roller 307 then there is little else you can do to maximize your fe and performance unless you started to do more hot rod tricks like cutting of weight and taking strain off engine ( swapping to electric fuel pump, dumping the a/c unit, smog pump getting rid of charcoal filter and the like. I had a carbed 87 F-bird years back so I am going off the 305 knowledge I used on my ride here.

Of course there are a bill ion things you can do to get more power and go faster but to do it and get better mpg's is the trick at least i hope that is why you are posting here