289 performance upgrades?
289 performance upgrades?
05-06-2005, 04:01 PM
Help me out here HP lovers.
05-10-2005, 11:42 AM
don't know if you already have one but make it a 4 barrell carb instead of a 2 barrel with an aluminum intake manifold its one of the first things i do to all engines that i get my hands on cause it easy to do
or put on headers and an exaust system
or go full out like i did to my 351 windsor and put a supercharger on it if you got the money and time
personally i would drop in a newer 302 engine instead of the 289
05-10-2005, 07:50 PM
Your 289 will be fine. Just do some research on what kind of pistons you have, you want forged ones. A good combo of heads, cam, intake, and carb with a free-flowing exhaust and a good tune will get you over 300 HP. If I had more experience with a 289 I'd make more specific recommendations, but look around. The Smallblock Ford (289-302-351) has as many head and intake choices as a SBC...
05-10-2005, 08:58 PM
the cheapest things you can do to improve hp is 4 barell carb and intake manifold, but the best thing to do dollar for dollar is to put a smaller head gasket you are at 9.5 to 1 now if you go to 10.5:1 you should get about 80 more hp out of that engine and parts are under 120 dollars. post and questions
05-10-2005, 10:00 PM
Thanks for the tips guys.
I have never heard of using smaller head gaskets to increase the compression ratio, will it really make that big of a difference?
As for the forged pistons, how will I know if I have them without breaking the engine apart? I am guessing that the factory 2 barrel 289 wouldn't have forged pistons, but it was rebuilt by the previous owner, so possibly.
I have heard rumors of 100 HP gains with the simple installation of $1600.00 Elelbrock aluminum heads, any opinions on that?
05-11-2005, 01:20 AM
just put Elelbrock aluminum heads on a 460 big block for my brother and he gained about 150 more horse power but he's running 11.5-1 compression on 94 octane now
we also used TRW pistons
another thing we did while the whole engine was apart was port and polish the heads and port match them with the intake for better flow
it was our first time doing it but worked out pretty good
we'll be the same to my 351 windsor soon to see what we can get out of it
05-11-2005, 06:15 PM
If you used the upgrades I listed with a good cam and the right carb, you will end up with over 300 HP. Easily. As for heads, pick 'em. Edelbrocks (60379's), AFR 165's, You could even make 300 with a set of junkyard GT-40P's off a 97-98 explorer 5.0.....
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