MustangWorks.com : Ford Forums - View Single Post - 289's compared GT-40P's???

84LX89GT · 09-10-2001, 03:55 AM

I read an article on Fletch's carbureted Fox mustang site (forget address), but a guy built a 400 horsepower 302 on a budget using 289 heads. Apparently he preferred the lower compression heads used on the 2 barrels, but you can only put in basically the same size intake valves as the GT40-P because the intake valve interferes with the spark plug hole on the old 289 heads if you use 1.90 intake valves. He also did very extensive porting of the 289 heads and got quite a bit of flow out of them.

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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT

09-10-2001, 03:55 AM	#3
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I read an article on Fletch's carbureted Fox mustang site (forget address), but a guy built a 400 horsepower 302 on a budget using 289 heads. Apparently he preferred the lower compression heads used on the 2 barrels, but you can only put in basically the same size intake valves as the GT40-P because the intake valve interferes with the spark plug hole on the old 289 heads if you use 1.90 intake valves. He also did very extensive porting of the 289 heads and got quite a bit of flow out of them. ------------------ previous name: 84stangLX '84 Mustang 5.0 LX my LX '89 Mustang GT my GT