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6 Small Block Ford Cylinder Heads That Work

Bolt-On Power For Less Than $1,350

By , Photography by

Parts List

Description PN Source Price
Edelbrock E-Street 5025 Summit Racing $935.95
Ford Racing X307 M-6049-X307 Summit Racing 1,119.90
Flo-Tek/Speedway 7223000 Speedway Motors 739.98
RHS 180 35011-01 Summit Racing 1,326.00
TFS 180 51410004-M58 Summit Racing 1,099.96
World Windsor, Jr. 053030-1 Summit Racing 1,183.90
Edelbrock RPM int. 7521 Summit Racing 257.95
Holley 750 HP 0-82751 Summit Racing 499.95
Fel-Pro head gasket 1011-2 Summit Racing 35.75
Fel-Pro int. gasket 1262 Summit Racing 21.25
Comp rocker arms 1831-16 Summit Racing 399.95
Comp pushrods 7752-16 Summit Racing 134.95
Comp 10w30 oil 1594 Summit Racing 39.75
Comp valve cover 282 Summit Racing 151.95
Autolite spark plugs AR3934 Summit Racing 28.00
Autolite spark plugs AR25 Summit Racing 47.60
Autolite spark plugs AR472 Summit Racing 31.60
Permatex Rt. Stuff 29208 Amazon 13.15
MSD distributor 8598 Summit Racing 241.95
MSD plug wires 31189 Summit Racing 82.95
Ford roller rocker kit M-6564-B351 Fordracingdirect.com 465.95
ARP head bolts 154-3601 Summit Racing 46.54
Ford Racing Boss 302 engine M-6007-X302B Summit Racing 6,599.95

Intake Port Flow (cfm)

Intake Port Flow (cfm)
  Ford Int. RHS Int. World Int Flo-Tek Int. Edel Int. TFS Int.
0.1 60 59 56 49 58 63
0.2 116 119 117 102 119 139
0.3 171 168 162 152 167 198
0.4 214 194 189 192 211 239
0.5 228 207 206 203 235 254
0.6 236 215 216 215 241 252

Exhaust Port Flow (cfm)

Exhaust Port Flow (cfm)
  Ford Exh RHS Exh World Exh Flo-Tek Exh. Edel Exh. TFS Exh.
0.1 50 50 50 44 50 52
0.2 96 102 98 90 99 102
0.3 131 135 130 128 134 128
0.4 161 150 149 144 159 154
0.5 174 155 158 148 172 172
0.6 179 158 161 149 178 181

Conclusion
Like we said, if best power or least price is your only concern, then the decision is easy. But for the rest of us, choosing a cylinder head might be a complex algorithm of price, power, brand loyalty, ease of installation, head bolt size, and maybe even shoe size if you're that compulsive. If ultimate power is not the most important point, then you could easily choose any of these heads and make a good decision. That may or may not make your ultimate choice any easier, but if so, you can thank us later. And, yes, this next bit is unashamed self-promotion, but the next time some lame dude spouts off about how he gets all his information off the Web—ask him to show you the last time he read a comprehensive test like this from a free Web-based publication. Car Craft is one of the few magazines that is willing to do this kind of extensive and expensive technical testing for our readers. And you get it for the price of a subscription. That, my friends, is the deal of the century.

SOURCES
Tri-State Cylinder Heads
1712 Read Street
Evansville
IN  47710
800-270-0095
http://www.tristatecylinderhead.
com/
Autolite/Honeywell
Danbury
CT
203-830-7800
www.Autolite.com
Bill Mitchell Products
51 Trade Zone Court
Ronkonkoma
NY  11779
631-737-0372
http://www.theengineshop.com/
Racing Head Service
3416 Democrat Road
Memphis
TN  38118
877-776-4323
http://www.racingheadservice.com
Speedway Motors
340 Victory Lane
Lincoln
ME  68528
800-979-0122
http://www.speedwaymotors.com
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12 comments
Fanny St-jacque
Fanny St-jacque

quand tu va voir live un moteur sur le DYNO t en a des frissons sur tout le corps de l entendre révolutionner (super exp je le souhaite a tout les amateurs de char modifiés)

Darren Rabaduex
Darren Rabaduex

Mike Lewin, its a little late now, but the twisted wedge 180 made more power across the board out of all 6 of the heads they tested. RHS is in the list too. Zach Endicott, your Windsor Jrs are in there too.

Kurt Trimas
Kurt Trimas

Checking valve clearance, because it doesn't seem like spring tension

Jeff Mcdowell
Jeff Mcdowell

That was a lot of work to test tiny heads. What about Vic jr's and others?

Toby Waters
Toby Waters

And when all that fails.... LS it. :p

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