MustangWorks.com : Ford Forums - View Single Post - difference in 85,86 and 87 heads and pistons?

fiveohpatrol · 11-30-2001, 03:44 PM

i'm pretty sure the 87-up's were 9.0:1 not 9.5:1

you can find a set of E7s/ port the crap out of the exhaust ports/ gasket match the intake ports/ and have a set of heads that are night and day better than the 85 heads

If the way im thinking is correct, the 85 pistons with no valve relief's would actually result in more compression with an E7 head than an 87 piston with reliefs. I'll wait until PKRWUD gets on here and corrects me though

11-30-2001, 03:44 PM	#3
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	i'm pretty sure the 87-up's were 9.0:1 not 9.5:1 you can find a set of E7s/ port the crap out of the exhaust ports/ gasket match the intake ports/ and have a set of heads that are night and day better than the 85 heads If the way im thinking is correct, the 85 pistons with no valve relief's would actually result in more compression with an E7 head than an 87 piston with reliefs. I'll wait until PKRWUD gets on here and corrects me though __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft