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Topic: Motor question (Read 736 times) previous topic - next topic

Motor question

What im trying to find out is if the 302 out of a 86 t-bird that same as the 86 mustang motor. Cause in the mustang, the pistons had no valve reliefs. I might be trading some stuff for a 302 from a t-birds. And i have 86 mustang h.o. motor in my 84 1/2 mustang gt350. I just dont wanna end up with the same motor i have. And some spec would be awesome. thanks
Current project:
1984 1/2 mustang GT350 (Drift?)
1976 Toyota Celica GT(puppiesanese Mustang Drift)

"I drift not because it is a quicker way around a corner, But the most exciting way"

-Keiichi Tsuchiya aka "Drift King"

Motor question

Reply #1 –
I dont know a lot about the 86 T-bird engine.  However, the 1986 Mustang engine was anemic (sp) at best in stock form.  Yeah it was a roller cam block but the pistons were a true flat top design (py for aftermarket cams with out fly cutting).  And the heads were basically a one year design. The heads were E6SE fast burn combustion chamber heads which breathed through tubular exhaust. Unfortuneatly, these heads really didn't breath well above 4000 rpm which severly limited their performance value.  Basically they're paper weights unless you're restoring a car.  Your best bet is to grab up some E7TE head from an HO car or a truck.  Better flow numbers to say the least.
41 Dodge Luxury Liner Sedan
78 F-100 2wd flareside
84Turbo Coupe
84 Thunderbird Élan
85 Thunderbird 3.8
88 Turbo Coupe
88 Mustang GT
90 Stang LX 5.0 5spd
93 F-150 4x4 ext cab
96 Mustang GT
98 Mustang GT
99 SVT Cobra
06 Fusion SEL
14 Fusion Sport

Motor question

Reply #2 –
Different EEC, different cam, different injectors, and different firing order.

That out of the way, I have no idea on the Mustang's pistons, but I'm rather sure NO Tbird/Cougar '88 and older with a stock 5.0 ever had valve reliefs.
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)
 

Motor question

Reply #3 –
Alrighty, thats what i needed to know, the mustang h.o. motor had forged flat top pistons, no valve reliefs, and thats why i was wondering if the 86 t-bird 302 was the same way.
Current project:
1984 1/2 mustang GT350 (Drift?)
1976 Toyota Celica GT(puppiesanese Mustang Drift)

"I drift not because it is a quicker way around a corner, But the most exciting way"

-Keiichi Tsuchiya aka "Drift King"

Motor question

Reply #4 –
Glad I could help :rollin:

Motor question

Reply #5 –
I remember this question from somewhere..........
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Motor question

Reply #6 –
V8 tbirds didnt come with forged pistons.
1979 Ford Fairmont
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5.0L/4R70W/8.8"/5-lug/3" Exhuast

Motor question

Reply #7 –
I know they didnt come with forged piston. Just trying to find out now if it had valve reliefs is all
Current project:
1984 1/2 mustang GT350 (Drift?)
1976 Toyota Celica GT(puppiesanese Mustang Drift)

"I drift not because it is a quicker way around a corner, But the most exciting way"

-Keiichi Tsuchiya aka "Drift King"

Motor question

Reply #8 –
The '86 HO has flattop pistons and work great with the trick flow heads and cam(that was my old 5.0 combo)... If there are any real differences in the short block '86 HO and '86-'91 SO 5.0(I'm including Panther platform versions) I'm unaware of them...


BTW I sprayed a 150hp shot on my '86 HO, never had any ill effect other than a head gasket that let go some months later... Went best of 12.23@112 on a 85 shot, never had tires that could hold the 150 shot out of the hole...

BTW #2 I had a STOCK 5 Speed, '86 GT Stang, with a cat back system, best it ran was a 14.51, not exactly py performance... If it had decent tires on the back, would have gone 14.3 easy...