Flo-Tek 203505 Single Small Block Ford SBF 289 302 Aluminum Cylinder Head 58cc.
Head is sold individually, 180cc intake runners, 62cc exhaust runners, 1.94" intake and 1.54" swirl-polished exhaust valves, 58cc chambers
Flo-Tek 203505 Small Block Ford Aluminum Cylinder Head
Sku # 7223000
Mfr. Part # 203505
Condition
New
Brand
Flo-Tek
Sold
Each
Details
Notes
Info
You don't need to spend a fortune to get a top-performing, lightweight aluminum cylinder head for your small-block Ford V8. This Flo-Tek head has a long list of high-end features, minus the hefty price tag.
- Head is sold individually
- 180cc intake runners
- 62cc exhaust runners
- 1.94" intake and 1.54" swirl-polished exhaust valves
- 58cc chambers
- Performance valve springs (.550 lift)
- 130 lbs. spring seat pressure
- Compatible with most flat tappet camshafts
- Hardened locks and retainers
- PC seals
- High-temp exhaust seats
- Multi angle valve job
- Bronze guides
- 3/8" rocker studs and guide plates
See how this Flo-Tek head stacks up against the competition in Car Craft Magazine's tech article; 6 Small Block Ford Cylinder Heads That Work.
Head Flow Specs:
Lift Intake Exhaust .400 209 137 .500 223 161 .600 248 191
Specs
- Recommended Spark Plug: AGSF-32C
- Valve Spring Type: Single w/ Damper
- Valve Spring Application: Hydraulic & Solid Flat Tappet
- Valve Spring Diameter: 1.465" O.D.
- Valve Spring Seat Pressure: 130 lbs.
- Valve Spring Rate: 280 lbs/in.
- Intake Valve: 1.94"
- Exhaust Valve: 1.54"
- Valve Type: Stainless, Swirl-Polished
- Air Flow Data:
- Intake
- 223 CFM @ .500"
- 248 CFM @ .600"
- Exhaust
- 161 CFM @ .500"
- 191 CFM @ .600"
Application
This Part Fits
- Recommended Spark Plug: AGSF-32C
- Valve Spring Type: Single w/ Damper
- Valve Spring Application: Hydraulic & Solid Flat Tappet
- Valve Spring Diameter: 1.465" O.D.
- Valve Spring Seat Pressure : 115 lbs.
- Valve Spring Rate: 240 lbs/in.
- Max lift: 0.550"
- Intake Valve: 1.94"
- Exhaust Valve: 1.54"
- Valve Type: Stainless, Swirl-Polished
- Air Flow Data:
- Intake
- 223 CFM @ .500"
- 248 CFM @ .600"
- Exhaust
- 161 CFM @ .500"
- 191 CFM @ .600"
California Customers: This part has been identified as emissions sensitive and can only legally be installed on race-use only vehicles, off-road-use only vehicles, or pre-1965 vehicles in the State of California in accordance with the California Air Resource Board (CARB) requirements. Once your order is placed you will be contacted by Speedway Motors within 2 business days so that you can certify that you will only use such parts on these types of vehicles in California.
Specs
Material Type
Aluminum
Sold in Quantity
Each
Finish
Natural
Cylinder Head Style
Assembled
Spark Plug Style
Angle
Combustion Chamber Volume
58cc
Notes
Recommended Spark Plug: Motorcraft AGSF-32C or equivalent. Bored for 1/2" head bolts.
MFG. Part #
203505
Intake Valve Diameter
1.940
Intake Runner Volume Range
180cc - 189cc
Exhaust Runner Volume Range
60cc - 69cc
Combustion Chamber Volume Range
50cc - 59cc
Exhaust Runner Volume
62cc
Intake Runner Volume
180cc
Exhaust Valve Diameter
1.540
Spring Diameter
1.470
Reviews
I would by this product again
Rated
by 94Cobra on October 10, 2018
Summary: I rebuilt my 94 cobra with these heads and an e303 cam and they seem to flow very good.I had a hard time aligning the the roller tip to the valve, at first I thought it was rocker stud not alining with valve tip, until I noticed How much side play my rockers had and thus not staying centered on valve. the fix was too shim the trunnion on the rockers.
Pros:
Nice heads for the price
Yes, I recommend this product.
Checked great right out of the box
Rated
by Lance on April 01, 2018
Summary: Worked great valves were solid with no leak by has a small amount of casting marks in the ports so an easy clean up and guide plates were nice being adjustable. On the downside the rocker studs are too short to be used with the height of the valve stems but overall very pleased with the quality
Yes, I recommend this product.
$ to quality and performance they have no equal!!
Rated
by DazeCars on March 31, 2018
Summary: You wont find heads of this quality at a better price anywhere. Speedway and Try-State Cylinder heads both stand behind this product. I am running them on a 302 and purchased this set for a 351 build. They don't flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. These are perfect for a street build and the price is outstanding!!
Yes, I recommend this product.
Best bank for buck
Rated
by Jason on February 20, 2018
Summary: Good flowing heads for the money
Yes, I recommend this product.
Great product for the right price
Rated
by Matt on November 27, 2017
Summary: Great improvement over my stock heads.
Yes, I recommend this product.
Related Items / Suggested Parts
ARP 254-3708 Ford 302 w/ 351 Windsor Aluminum Cylinder Heads Bolt Kit
Fel-Pro 1011-1 1962-1984 Small Block Ford Head Gasket
Fel-Pro 1250 Small Block Ford Intake Gasket Set-1.20x2.00 Port
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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted
source for specialty rodding and racing products and friendly expert
advice for more than 68 years. Founded in 1952 by “Speedy” Bill
Smith – a racer and street rodder himself – Speedway has grown from a
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