If there is anyone out there that knows anything about a 1986 302 HO motor please tell me anything. im trying to rebuild it to put in my maverick and im trying to buy rings and bearings and i dont know the sizes or well anything at all about the motor. I will take any advice or information at all like the horse power torque or anything. thanks.
they use a flat top piston that doesnt have any room for a biger cam or valves to be used. the heads didnt flow that great. the upper intake was restrictive compared to teh 87 and newer ones.
yeah ive taken care of the intake and got a edelbrock performer intake and carb the carb is a 600cfm a complet msd igniton system and i was woundering if the origanial 74 heads would be any better to put on it.
I have an '86 Lincoln engine in my Mav. I use E7 heads, B303 cam and springs, and a Stealth manifold and 600cfm carb. It all seems to work, but I don't know if I would use a bigger cam, as the pistons do not have valve reliefs. Maybe should choose an 87 or later block if building for high performance. Live and learn!
yeah ive read that but this isnt going to be a really big performance motor this is going to be a regular street motor just suped up a little. the orig. were going to turn in to a stroker becuase its an orig. v8 car so...
IIRC, that year had the speed density cam which is slightly better than the later mass flow HO cams. I'd slap on a pair of home ported iron GT40 heads. Also would have gotten a Performer RPM intake rather than the regular Performer.
ive never heard of a speed density cam. the speed density cars (mainly the 87 mustang) ran faster than mass air cars because speed density was a simpler program that could react faster than mass air. i conveted my 87 to mass air and back to speed density several times for various reasons. when the motor was stock with just a filter and exhast it was defintly faster with speed density. i truely belive that the cams were the same in all years of the h.o. roller motors.
first is the machine shop work finished ?you may well need to over size if walls have any distortion most of these early blocks were foundered thin and heat would distort the roundness of bore this happens less on a seasoned block,but never the less these early blocks distorted under high heat in that case use notched pistons. #2 is this a roller because they had the early rollers but at the same time they made flat tappet cammed motors also check the fireing order it should be the 351 -1,3,7 order the e7 heads should work for you but i would remove heat thermactor
Roller cammed 5.0's came with either firing order, depended on the application. The blocks were the same as far as construction from 86 to 2001. The 85 roller blocks were 6 pounds lighter.
yes it is the 351 firing order. im not that worried about the flow right now becuase this is going to be mainly the street motor. im going to worie about flow more on the origanial motor that were going to turn in to a stroker. and thanks for all the information. any info is welcome
