Rebate
Rebate
|
#42511704RFLT
Flowtech 11704-RFLT SB Chevy Rams Horn Exhaust Manifold, Uncoated
$409.95
/set
Factory Shipped
$461.95
Save $52.00
Quantity
Need Help? Call to Order
Add to a list
Select an engine to verify Fitment
Select Engine
Product Summary
Universal Fit, Natural, Gasket(s) Included
Rebates Available
See rebate detailsNeed To Know
Need help?
855.313.9176Quick and Easy Returns
Return PolicyFlowtech Exhaust 11704-RFLT Details
Flowtech Exhaust 11704-RFLT Details
Flowtech exhaust manifolds are the perfect combination of quality and value. This Rams horn exhaust manifold fits all popular hot rods with the popular small block Chevy motor.
- Tight fit block hugger design for popular hot rod and street rods powered by the popular small block Chevy motors
- Cast iron construction styled in the vintage Rams Horn design for maximum engine clearance and maximum strength
- Smooth transition, 1-5/8 diameter primaries are used for increased exhaust flow increasing performance and improving throttle response
- 3/8 thick 2-1/2 collector for maximum strength
- Thick header flange pads for a leak-free seal and maximum strength
- Premium aluminum header gaskets are included
- Thjis manifold is raw "uncoated" so it is perfect to paint match or coat to match engine or body design
Note: Hardware to mount the manifolds to the heads is NOT included.
Charts
Specs
- Width of Header at widest point from exhaust flange- 3.823"
- Height of Header from highest to lowest point - 7.13"
- Length of Header from leading edge to trailing edge - 18.623"
- Cylinder Head surface to outside point - 3.52"
- Bolt center to top of manifold - 3.51"
- Manifold bolt center to bottom of collector - 5.50"
- Collector mounting bolt circle center to center - 3.031"
Rebates
Holley IRS Sale 2026
Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period runs from February 17, 2026 through March 29, 2026.
Guides & Documents
CARB Warning
For race/ off road use only
CARB Warning
For race/ off road use only
Flowtech Exhaust 11704-RFLT Specifications
Flowtech Exhaust 11704-RFLT Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 11704-RFLT |
| Brand | Flowtech Exhaust |
| Finish | Natural |
| GENERAL | |
| Gasket(s) Included | Yes |
| Hardware Included | No |
| Sold in Quantity | Pair |
| Emission Code | 3 |
| GTIN Code | 090127690758 |
Ratings & Reviews
3.5
2 Reviews
Customers appreciate this product, particularly for its quality and practicality. It is lauded as an ideal component for casual use, demonstrating usability that consumers wish they had discovered sooner. A discrepancy in outlet size is noted but doesn't overshadow the good quality, implying it outperforms similar items from competitors.
Ratings & Reviews
3.5
2 Reviews
Customers appreciate this product, particularly for its quality and practicality. It is lauded as an ideal component for casual use, demonstrating usability that consumers wish they had discovered sooner. A discrepancy in outlet size is noted but doesn't overshadow the good quality, implying it outperforms similar items from competitors.
3.5
2 reviews
5
0
4
1
3
1
2
0
1
0
Filter by Ratings
Very nice product.
4.0
7 years ago
PappyChris55
Mound City KS.
Verified
Wish I'd known about these years ago. Perfect for a less than all out street basher.
Would Recommend
this product is not a 2 1/2 outlet as stated
3.0
7 years ago
1racer
indian trail, nc
Verified
the quality seems to be good.
Would Not Recommend
Showing 2 of 2 reviews
Fitment
Fitment
1959 Chevy 3A
2-Piece Rear Main Chevy 283
1959 Chevy 3B
2-Piece Rear Main Chevy 283
1959 Chevy 3C
2-Piece Rear Main Chevy 283
1959 Chevy 3D
2-Piece Rear Main Chevy 283
1959 Chevy 3E
2-Piece Rear Main Chevy 283
1959 Chevy 3F
2-Piece Rear Main Chevy 283
1959 Chevy 3G
2-Piece Rear Main Chevy 283
1957 Chevy Bel Air
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958-1967 Chevy Bel Air
2-Piece Rear Main Chevy 283
1968 Chevy Bel Air
Gen 1 L14 Small Block Chevy
1970-1975 Chevy Bel Air
2-Piece Rear Main Chevy 400
1958-1967 Chevy Biscayne
2-Piece Rear Main Chevy 283
1968 Chevy Biscayne
Gen 1 L14 Small Block Chevy
1970-1972 Chevy Biscayne
2-Piece Rear Main Chevy 400
1969-1973 Chevy Blazer
Gen 1 L14 Small Block Chevy
1958-1961 Chevy Brookwood
2-Piece Rear Main Chevy 283
1969 Chevy Brookwood
Gen 1 L14 Small Block Chevy
1970-1972 Chevy Brookwood
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1960-1967 Chevy C10
2-Piece Rear Main Chevy 283
1968-1973 Chevy C10
Gen 1 L14 Small Block Chevy
1976-1980 Chevy C10
2-Piece Rear Main Chevy 400
1960-1967 Chevy C10 Suburban
2-Piece Rear Main Chevy 283
1968-1973 Chevy C10 Suburban
Gen 1 L14 Small Block Chevy
1960-1967 Chevy C20
2-Piece Rear Main Chevy 283
1968-1973 Chevy C20
Gen 1 L14 Small Block Chevy
1976-1980 Chevy C20
2-Piece Rear Main Chevy 400
1960-1967 Chevy C20 Suburban
2-Piece Rear Main Chevy 283
1968-1973 Chevy C20 Suburban
Gen 1 L14 Small Block Chevy
1976-1980 Chevy C20 Suburban
2-Piece Rear Main Chevy 400
1960-1967 Chevy C30
2-Piece Rear Main Chevy 283
1968-1973 Chevy C30
Gen 1 L14 Small Block Chevy
1976-1979 Chevy C30
2-Piece Rear Main Chevy 400
1967-1968 Chevy Camaro
Gen 1 DZ Small Block Chevy
1969 Chevy Camaro
Gen 1 DZ Small Block Chevy
Gen 1 L14 Small Block Chevy
1970-1973 Chevy Camaro
Gen 1 L14 Small Block Chevy
1980-1981 Chevy Camaro
2-Piece Rear Main Chevy 267
1966-1967 Chevy Caprice
2-Piece Rear Main Chevy 283
1968-1969 Chevy Caprice
Gen 1 L14 Small Block Chevy
1970-1973 Chevy Caprice
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1974-1976 Chevy Caprice
2-Piece Rear Main Chevy 400
1980-1982 Chevy Caprice
2-Piece Rear Main Chevy 267
1964-1967 Chevy Chevelle
2-Piece Rear Main Chevy 283
1968-1969 Chevy Chevelle
Gen 1 L14 Small Block Chevy
1970-1973 Chevy Chevelle
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1963-1967 Chevy Chevy II
2-Piece Rear Main Chevy 283
1968 Chevy Chevy II
Gen 1 L14 Small Block Chevy
1957-1961 Chevy Corvette
2-Piece Rear Main Chevy 283
1957 Chevy Del Ray
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958 Chevy Del Ray
2-Piece Rear Main Chevy 283
1959-1960 Chevy El Camino
2-Piece Rear Main Chevy 283
1964-1967 Chevy El Camino
2-Piece Rear Main Chevy 283
1968-1969 Chevy El Camino
Gen 1 L14 Small Block Chevy
1970-1973 Chevy El Camino
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1974-1976 Chevy El Camino
2-Piece Rear Main Chevy 400
1979-1982 Chevy El Camino
2-Piece Rear Main Chevy 267
1969 Chevy Estate
Gen 1 L14 Small Block Chevy
1970 Chevy Estate
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1976 Chevy G10
2-Piece Rear Main Chevy 400
1968-1973 Chevy G10 Van
Gen 1 L14 Small Block Chevy
1975-1980 Chevy G20
2-Piece Rear Main Chevy 400
1967 Chevy G20 Van
2-Piece Rear Main Chevy 283
1968-1973 Chevy G20 Van
Gen 1 L14 Small Block Chevy
1975-1980 Chevy G30
2-Piece Rear Main Chevy 400
1958-1967 Chevy Impala
2-Piece Rear Main Chevy 283
1968-1969 Chevy Impala
Gen 1 L14 Small Block Chevy
1970-1973 Chevy Impala
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1974-1976 Chevy Impala
2-Piece Rear Main Chevy 400
1980-1982 Chevy Impala
2-Piece Rear Main Chevy 267
1960-1967 Chevy K10
2-Piece Rear Main Chevy 283
1968-1973 Chevy K10
Gen 1 L14 Small Block Chevy
1975-1980 Chevy K10
2-Piece Rear Main Chevy 400
1960-1967 Chevy K10 Suburban
2-Piece Rear Main Chevy 283
1968-1973 Chevy K10 Suburban
Gen 1 L14 Small Block Chevy
1975-1979 Chevy K10 Suburban
2-Piece Rear Main Chevy 400
1960-1967 Chevy K20
2-Piece Rear Main Chevy 283
1968-1973 Chevy K20
Gen 1 L14 Small Block Chevy
1975-1980 Chevy K20
2-Piece Rear Main Chevy 400
1967 Chevy K20 Panel
2-Piece Rear Main Chevy 283
1960-1967 Chevy K20 Suburban
2-Piece Rear Main Chevy 283
1968-1973 Chevy K20 Suburban
Gen 1 L14 Small Block Chevy
1975-1980 Chevy K20 Suburban
2-Piece Rear Main Chevy 400
1968-1973 Chevy K30
Gen 1 L14 Small Block Chevy
1977-1980 Chevy K30
2-Piece Rear Main Chevy 400
1975-1979 Chevy K5 Blazer
2-Piece Rear Main Chevy 400
1959-1961 Chevy Kingswood
2-Piece Rear Main Chevy 283
1969 Chevy Kingswood
Gen 1 L14 Small Block Chevy
1970-1972 Chevy Kingswood
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1973 Chevy Laguna
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1974-1976 Chevy Laguna
2-Piece Rear Main Chevy 400
1964-1967 Chevy Malibu
2-Piece Rear Main Chevy 283
1973 Chevy Malibu
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1974-1976 Chevy Malibu
2-Piece Rear Main Chevy 400
1979-1982 Chevy Malibu
2-Piece Rear Main Chevy 267
1970-1976 Chevy Monte Carlo
2-Piece Rear Main Chevy 400
1979-1982 Chevy Monte Carlo
2-Piece Rear Main Chevy 267
1975-1976 Chevy Monza
2-Piece Rear Main Chevy 262
1957 Chevy Nomad
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958-1961 Chevy Nomad
2-Piece Rear Main Chevy 283
1969-1973 Chevy Nova
Gen 1 L14 Small Block Chevy
1975 Chevy Nova
2-Piece Rear Main Chevy 262
1957 Chevy One-Fifty Series
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1976 Chevy P30
2-Piece Rear Main Chevy 400
1961-1962 Chevy P30 Series
2-Piece Rear Main Chevy 283
1968-1969 Chevy P30 Van
Gen 1 L14 Small Block Chevy
1973 Chevy P30 Van
Gen 1 L14 Small Block Chevy
1959-1961 Chevy Parkwood
2-Piece Rear Main Chevy 283
1957 Chevy Sedan Delivery
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958 Chevy Sedan Delivery
2-Piece Rear Main Chevy 283
1947-1959 Chevy Suburban
2-Piece Rear Main Chevy 265
1960-1967 Chevy Suburban
2-Piece Rear Main Chevy 283
1969 Chevy Townsman
Gen 1 L14 Small Block Chevy
1970-1972 Chevy Townsman
2-Piece Rear Main Chevy 400
Gen 1 L14 Small Block Chevy
1955 Chevy Truck
2-Piece Rear Main Chevy 265
1957 Chevy Truck
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958 Chevy Truck
2-Piece Rear Main Chevy 283
1960 Chevy Truck
2-Piece Rear Main Chevy 283
1955 Chevy Two-Ten Series
2-Piece Rear Main Chevy 265
1957 Chevy Two-Ten Series
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1958 Chevy Yeoman
2-Piece Rear Main Chevy 283
1966 GMC 1000
2-Piece Rear Main Chevy 283
1960 GMC 1000 Series
2-Piece Rear Main Chevy 283
1962-1965 GMC 1000 Series
2-Piece Rear Main Chevy 283
1960-1965 GMC 1500 Series
2-Piece Rear Main Chevy 283
1966 GMC 2500
2-Piece Rear Main Chevy 283
1960-1965 GMC 2500 Series
2-Piece Rear Main Chevy 283
1960-1966 GMC 3000
2-Piece Rear Main Chevy 283
1960-1966 GMC 3500
2-Piece Rear Main Chevy 283
1967 GMC C25/C2500 Pickup
2-Piece Rear Main Chevy 283
1968-1972 GMC C25/C2500 Pickup
Gen 1 L14 Small Block Chevy
1967 GMC C25/C2500 Suburban
2-Piece Rear Main Chevy 283
1968-1972 GMC C25/C2500 Suburban
Gen 1 L14 Small Block Chevy
1967 GMC C35/C3500 Pickup
2-Piece Rear Main Chevy 283
1968-1972 GMC C35/C3500 Pickup
Gen 1 L14 Small Block Chevy
1973-1974 GMC C35/C3500 Pickup
2-Piece Rear Main Chevy 400
1975-1978 GMC K15
2-Piece Rear Main Chevy 400
1975-1978 GMC K15 Suburban
2-Piece Rear Main Chevy 400
1967-1974 GMC K15/K1500 Pickup
2-Piece Rear Main Chevy 400
1967-1974 GMC K15/K1500 Suburban
2-Piece Rear Main Chevy 400
1979-1980 GMC K1500 Suburban
2-Piece Rear Main Chevy 400
1975-1978 GMC K25
2-Piece Rear Main Chevy 400
1975-1978 GMC K25 Suburban
2-Piece Rear Main Chevy 400
1967 GMC K25/K2500 Pickup
2-Piece Rear Main Chevy 283
1968-1972 GMC K25/K2500 Pickup
Gen 1 L14 Small Block Chevy
1973-1974 GMC K25/K2500 Pickup
2-Piece Rear Main Chevy 400
1967 GMC K25/K2500 Suburban
2-Piece Rear Main Chevy 283
1968-1972 GMC K25/K2500 Suburban
Gen 1 L14 Small Block Chevy
1973-1974 GMC K25/K2500 Suburban
2-Piece Rear Main Chevy 400
1979-1986 GMC K2500 Suburban
2-Piece Rear Main Chevy 400
1967 GMC K35/K3500 Pickup
2-Piece Rear Main Chevy 283
1968-1972 GMC K35/K3500 Pickup
Gen 1 L14 Small Block Chevy
1973-1974 GMC K35/K3500 Pickup
2-Piece Rear Main Chevy 400
1966 GMC P1000
2-Piece Rear Main Chevy 283
1973-1977 GMC Sprint
2-Piece Rear Main Chevy 400
1955-1959 GMC Suburban
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1960-1966 GMC Suburban
2-Piece Rear Main Chevy 283
1967 GMC Suburban
Gen 1 L14 Small Block Chevy
1955 GMC Truck
2-Piece Rear Main Chevy 265
1956-1960 GMC Truck
2-Piece Rear Main Chevy 265
2-Piece Rear Main Chevy 283
1965-1966 Studebaker Commander
2-Piece Rear Main Chevy 283
1965-1966 Studebaker Cruiser
2-Piece Rear Main Chevy 283
1965-1966 Studebaker Daytona
2-Piece Rear Main Chevy 283
1966 Studebaker Wagonaire
2-Piece Rear Main Chevy 283