I would go with E7TE or AFR head for aftermarket.. and injected would be good but would cost more... I would go with carb...
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" The Gorilla fisted carburetor King "
Car 1: 1988 Ford Bronco Full Size.... All Stock
Car 3: 1988 Mustang LX - Drag Car
Car 3: 1988 Mustang GT - Mod's
Front Mod's strangs 10way adj., New ushing,Springs
Rear Mod's Built 8.8" 31 splines, c-clips, 50/50 shocks, 3.90 gears, eaton posi, Engine Mods' Cold air intake..
Bets Time: 14.62
84 Predator Mustang GT302R [Gone]
89GT: built fairly good (sold)
92LX: 4cyl to 5.0 conv. completed on the cheap (sold)
88GT: 302/AOD,stock 2.73's and traclok, LT's, custom 2 1/2" exhaust made by me with thrush chambered mufflers dumped at rear axle, hayden electric fan..more to come, daily driver.
i like the afr 185 myself. I also had pretty good luck with ported and polished e7's..I say spend the money on some good heads cause building power always goes back to your heads..just my 2 cents..
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<<<<(my car in the avatar)1985 mustang gt, 5 speed,t-tops
with a 91 lx front clip. hard to tell its a 85 huh..
E7's are pretty decent within the range of stock heads.
They'll still hold you back a bunch if you're wanting to upgrade
the rest of your engine, i.e. cam/headers/intake.
Powerheads does wonders porting stock E7's but are not far costwise
from some of the cheaper aluminum aftermarket heads, although they
do outflow them some.
AFR's are about top shelf for street, but spendy.
The 165's are great for moderately warmed small blocks
in the 302 - 306 range. The 165 with Competition Porting
(stock from AFR) are better. The 185's are good for 331's
thru 351. They all run over $1000 and need upgraded springs.
You can sometimes shop if you have some time and find good
used ones cheaper. I found a pair of lo miles Ebrock's with
the small ports/1.9 intakes for $600, less than Powerheads
ported E7's for over $800.
I've read numerous posts of people with Holley's and Twist Wedges
that, after piling up some miles, have valve guide wear problems.
Due to the valve angles.
Canfield High Ports are very good, but you need a fairly stout motor
to match their flow/rpm characteristics.
The early 302 heads can be made to work wonders, also by Powerheads.
They'll support 400 hp, too, like their ported E7's.
Trick Flow also makes some besides the Twist Wedges that are very good.
Depends on the time you have to shop and your budget, and don't forget
to make your whole combo match regarding rpm range and torque/power curves
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89 Linc Mk VII LSC mass air w/A9P; 95 351 Lightning shortblock, 1.9 Ebrock heads, GT40-351 lower w/match Explorer top, 70mm mass air w/30 lb inj's, TF Stage 1 w/1.72 Crane rockers, 1-5/8 ceramic shorties, 2-1/2" Dynomax catback, 3 row rad, Ford blue hoses & wires, remote trans filter & plate cooler, 2500 lockup stall, beefed AOD, shift kit, 3:55's, 96 Cobra 17x8's, 99 Stang bolt on scoop. 4R70W, 2600 stall, Baumann TCS soon.
I have a 69 block and heads that I was gonna rebuild but I decided I wanted a roller cam and lifters so I am gonna use a 88 HO block. I have a set of E7TE heads that I ground down the bumps in the exhaust ports. I have all the stock fuel injection but would a 4v carb give better performance?
A relatively inexpensive but very good upgrade for a street engine is
the older Explorer intakes, they're very similar in design and flow to
the excellent GT40. You'd want the earlier one with the internal EGr port.
Or a Cobra intake, which is essentially the same thing.
Shop around, you can find them good used.
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89 Linc Mk VII LSC mass air w/A9P; 95 351 Lightning shortblock, 1.9 Ebrock heads, GT40-351 lower w/match Explorer top, 70mm mass air w/30 lb inj's, TF Stage 1 w/1.72 Crane rockers, 1-5/8 ceramic shorties, 2-1/2" Dynomax catback, 3 row rad, Ford blue hoses & wires, remote trans filter & plate cooler, 2500 lockup stall, beefed AOD, shift kit, 3:55's, 96 Cobra 17x8's, 99 Stang bolt on scoop. 4R70W, 2600 stall, Baumann TCS soon.
Which heads for 302 rebuild? 
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