This purchase enters you to win the FSD26 truck: a 2024 F-350 Limited + $20,000 cash. Ends October 18. See the truck
Share:
Edelbrock Part #7521 RPM Air-Gap intake manifold is designed for the small-block 302 CID Ford V8 or 331-347 stroker applications. The RPM Air-Gap incorporates the same race-winning technology that?s been used on our Victor Series competition intakes and is the perfect manifold for hot rodders, street machine enthusiasts, bracket racers or any builder looking for optimum performance in the 1,500-6,500 RPM range with a serious look of horsepower under the hood. The Air-Gap design features an open air space under the plenum that separates the runners from the hot engine resulting in a cooler, denser charge for more power. The 7521 RPM Air-Gap features larger runners (7% at the plenum entries) than the standard 7121 Performer RPM design that is beneficial to larger CID stroker engines. The 7521 includes nitrous bosses but no provision for exhaust heated chokes and no exhaust crossover. Edelbrock carbs will work with Ford automatic overdrive trans (AOD) when used with Lokar bracket SRK-4000. For more info go to www.lokar.com.
Air-Gap design features an open air space under the plenum
RPM Air-Gap for 302-331-347 Small-Block Ford V8
Larger runners over standard 7121 manifold
Separates fuel and air from engine heat
Race-Winning Technology
Includes nitrous bosses
This Part Fits:
Year
Make
Model
Submodel
1966-1968
AC
Shelby Cobra
Base
1970-1971
DeTomaso
Mangusta
Base
1963
Ford
300
Base
1966-1972,1974
Ford
Bronco
Base
1975-1977,1980-1984
Ford
Bronco
Custom
1975
Ford
Bronco
Northland
1975
Ford
Bronco
Ranger
1980-1981
Ford
Bronco
Ranger XLT
1968-1969
Ford
Bronco
Roadster
1975-1977
Ford
Bronco
Sport
1968-1973
Ford
Bronco
Wagon
1982-1983
Ford
Bronco
XLS
1984
Ford
Bronco
XLT
1982-1983
Ford
Bronco
XLT Lariat
1963-1974
Ford
Country Sedan
Base
1963-1974
Ford
Country Squire
Base
1964-1972
Ford
Custom
Base
1964-1974
Ford
Custom 500
Base
1969-1975,1979-1982
Ford
E-100 Econoline
Base
1975,1979-1982
Ford
E-100 Econoline
Chateau
1969-1974
Ford
E-100 Econoline
Club Wagon
1975,1979-1983
Ford
E-100 Econoline
Custom
1975
Ford
E-100 Econoline
Northland
1983
Ford
E-100 Econoline
XL
1979-1982
Ford
E-100 Econoline Club Wagon
Base
1979-1982
Ford
E-100 Econoline Club Wagon
Chateau
1979-1983
Ford
E-100 Econoline Club Wagon
Custom
1983
Ford
E-100 Econoline Club Wagon
XL
1975,1979-1982,1984-1985
Ford
E-150 Econoline
Base
1975,1979-1982
Ford
E-150 Econoline
Chateau
1975,1979-1983
Ford
E-150 Econoline
Custom
1975
Ford
E-150 Econoline
Northland
1983-1985
Ford
E-150 Econoline
XL
1979-1982,1984-1985
Ford
E-150 Econoline Club Wagon
Base
1979-1982
Ford
E-150 Econoline Club Wagon
Chateau
1979-1983
Ford
E-150 Econoline Club Wagon
Custom
1983-1985
Ford
E-150 Econoline Club Wagon
XL
1984-1985
Ford
E-150 Econoline Club Wagon
XLT
1969-1974
Ford
E-200 Econoline
Base
1971-1972
Ford
E-200 Econoline
Chateau Wagon
1969-1974
Ford
E-200 Econoline
Club Wagon
1970-1974
Ford
E-200 Econoline
Custom Wagon
1975,1979-1982,1984-1985
Ford
E-250 Econoline
Base
1975,1979-1982
Ford
E-250 Econoline
Chateau
1975,1979-1983
Ford
E-250 Econoline
Custom
1975
Ford
E-250 Econoline
Northland
1983-1985
Ford
E-250 Econoline
XL
1979-1980
Ford
E-250 Econoline Club Wagon
Base
1979-1980
Ford
E-250 Econoline Club Wagon
Chateau
1979-1980
Ford
E-250 Econoline Club Wagon
Custom
1969-1974
Ford
E-300 Econoline
Base
1970-1974
Ford
E-300 Econoline
Chateau Wagon
1969-1974
Ford
E-300 Econoline
Club Wagon
1971-1972
Ford
E-300 Econoline
Custom Wagon
1975,1979-1982
Ford
E-350 Econoline
Base
1975,1979-1982
Ford
E-350 Econoline
Chateau
1975,1979-1982
Ford
E-350 Econoline
Custom
1975
Ford
E-350 Econoline
Northland
1979-1980
Ford
E-350 Econoline Club Wagon
Base
1979-1980
Ford
E-350 Econoline Club Wagon
Chateau
1979-1980
Ford
E-350 Econoline Club Wagon
Custom
1969-1974,1976-1978,1983
Ford
F-100
Base
1975-1982
Ford
F-100
Custom
1975-1978
Ford
F-100
Northland
1975-1981
Ford
F-100
Ranger
1978-1981
Ford
F-100
Ranger Lariat
1975-1981
Ford
F-100
Ranger XLT
1982-1983
Ford
F-100
XL
1982-1983
Ford
F-100
XLS
1977
Ford
F-100
XLT
1982-1983
Ford
F-100
XLT Lariat
1976-1978,1983-1985
Ford
F-150
Base
1975-1982
Ford
F-150
Custom
1975-1978
Ford
F-150
Northland
1975-1981
Ford
F-150
Ranger
1978-1981
Ford
F-150
Ranger Lariat
1975-1981
Ford
F-150
Ranger XLT
1982-1985
Ford
F-150
XL
1982-1983
Ford
F-150
XLS
1977,1983-1984
Ford
F-150
XLT
1982,1985
Ford
F-150
XLT Lariat
1969-1974,1977-1978,1983-1985
Ford
F-250
Base
1977-1978,1980-1982
Ford
F-250
Custom
1977-1978
Ford
F-250
Northland
1977-1978,1980-1981
Ford
F-250
Ranger
1978,1980-1981
Ford
F-250
Ranger Lariat
1977-1978,1980-1981
Ford
F-250
Ranger XLT
1982-1985
Ford
F-250
XL
1982-1983
Ford
F-250
XLS
1977,1983-1984
Ford
F-250
XLT
1982,1985
Ford
F-250
XLT Lariat
1972-1974,1976-1978
Ford
F-350
Base
1975-1978,1980
Ford
F-350
Custom
1975-1978
Ford
F-350
Northland
1975-1978,1980
Ford
F-350
Ranger
1978,1980
Ford
F-350
Ranger Lariat
1975-1978,1980
Ford
F-350
Ranger XLT
1977
Ford
F-350
XLT
1963-1970
Ford
Fairlane
500
1966-1967
Ford
Fairlane
500XL
1963-1969
Ford
Fairlane
Base
1978-1979
Ford
Fairmont
Base
1978-1979
Ford
Fairmont
Futura
1964-1970
Ford
Falcon
Base
1964-1970
Ford
Falcon
Futura
1964-1965
Ford
Falcon
Futura Sprint
1964-1965
Ford
Falcon Sedan Delivery
Base
1963-1967
Ford
Galaxie
Base
1963-1974
Ford
Galaxie 500
Base
1963-1964
Ford
Galaxie 500
Sunliner
1963-1964
Ford
Galaxie 500
Victoria
1963-1970
Ford
Galaxie 500
XL
1972-1974
Ford
Gran Torino
Base
1973-1974
Ford
Gran Torino
Brougham
1974
Ford
Gran Torino
Elite
1972-1974
Ford
Gran Torino
Sport
1972-1974
Ford
Gran Torino
Squire
1975-1980
Ford
Granada
Base
1978-1980
Ford
Granada
ESS
1975-1980
Ford
Granada
Ghia
1964-1965,1968
Ford
GT40
Base
1966-1967,1969
Ford
GT40
MK III
1965-1974,1977-1982,1984-1985
Ford
LTD
Base
1970-1974
Ford
LTD
Brougham
1979-1982
Ford
LTD
Country Squire
1980-1982
Ford
LTD
Crown Victoria
1977-1979
Ford
LTD
Landau
1980-1982
Ford
LTD
S
1977-1979
Ford
LTD II
Base
1977-1978
Ford
LTD II
Brougham
1979
Ford
LTD II
Landau
1977-1979
Ford
LTD II
S
1971-1977
Ford
Maverick
Base
1975-1977
Ford
Maverick
Grabber
1964-1973,1979
Ford
Mustang
Base
1979
Ford
Mustang
Ghia
1970-1973
Ford
Mustang
Grande
1983-1985
Ford
Mustang
GT
1984
Ford
Mustang
GT-350 20th Anniversary
1984
Ford
Mustang
L
1984-1985
Ford
Mustang
LX
1970-1973
Ford
Mustang
Mach 1
1965-1968
Ford
Mustang
Shelby GT-350
1966
Ford
Mustang
Shelby GT-350H
1975-1978
Ford
Mustang II
Base
1975-1978
Ford
Mustang II
Ghia
1975-1978
Ford
Mustang II
Mach 1
1963-1974
Ford
Ranch Wagon
Base
1970
Ford
Ranch Wagon
Police Cruiser
1967-1974,1977-1979
Ford
Ranchero
500
1967
Ford
Ranchero
500 XL
1965-1971
Ford
Ranchero
Base
1966
Ford
Ranchero
Custom
1968-1974,1977-1979
Ford
Ranchero
GT
1970-1974,1977-1979
Ford
Ranchero
Squire
1964
Ford
Sprint
Base
1977-1981
Ford
Thunderbird
Base
1978
Ford
Thunderbird
Diamond Jubilee
1979,1981
Ford
Thunderbird
Heritage
1980
Ford
Thunderbird
Silver Anniversary
1978-1981
Ford
Thunderbird
Town Landau
1971
Ford
Torino
500
1968-1974
Ford
Torino
Base
1970-1971
Ford
Torino
Brougham
1968-1971
Ford
Torino
GT
1969-1971
Ford
Torino
Squire
1964-1965
Griffith
200
Base
1982
Lincoln
Continental
Base
1982
Lincoln
Continental
Givenchy
1982
Lincoln
Continental
Signature
1977-1980
Lincoln
Versailles
Base
1964-1967
Mercury
Caliente
Base
1966-1967,1979
Mercury
Capri
Base
1979
Mercury
Capri
Ghia
1982-1985
Mercury
Capri
RS
1964-1969,1971-1977
Mercury
Comet
Base
1967
Mercury
Commuter
Base
1967-1969,1977-1979
Mercury
Cougar
Base
1977
Mercury
Cougar
Brougham
1967-1969,1977-1981
Mercury
Cougar
XR-7
1963
Mercury
Country Cruiser
Base
1964-1971
Mercury
Cyclone
Base
1969
Mercury
Cyclone
CJ
1970-1971
Mercury
Cyclone
GT
1969-1971
Mercury
Cyclone
Spoiler
1979-1982
Mercury
Grand Marquis
Base
1979-1982
Mercury
Grand Marquis
Colony Park
1979-1982
Mercury
Marquis
Base
1979-1982
Mercury
Marquis
Brougham
1963
Mercury
Meteor
Base
1975-1980
Mercury
Monarch
Base
1975-1977
Mercury
Monarch
Ghia
1976
Mercury
Monarch
Grand Ghia
1968-1974
Mercury
Montego
Base
1972-1973
Mercury
Montego
GT
1968-1974
Mercury
Montego
MX
1970-1974
Mercury
Montego
MX Brougham
1970-1974
Mercury
Montego
Villager
1964-1967
Mercury
Villager
Base
1966-1967
Mercury
Voyager
Base
Customer Reviews
Overall rating: 4.7 / 5 from 533 reviews.
First off super happy with the product from quality to fit. This was my first install and it was quite easy all the necessary hardware was there. I was looking for mid price head studs and I’ll say I love them I have a 100% and a s480 I’ve had no problems with it and I beat on it every day. 10/10 recommend.
put in the billet heat exchanger and when removing the old trans lines one of the lines bent when loosening nut. Great quality line fits perfectly way better than factory!
Fit perfectly in the stock location and is way bigger than stock and shipped fast. Would recommend full send diesel to anyone looking at these type of parts!
I had a few questions about the install. I called and left a message and then shortly there after my call was returned with the answers I needed. Appreciate the help.
The billet heat exchanger looks great and is machined nicely. No worries about an internal failure allowing fluids to mix. It seems to be doing its job. It's more robust than the factory style cooler but I don’t believe it is quite as efficient based on warm up times I’m seeing. My only gripe is the bracket mounting bolts, they thread directly onto the cooler instead of passing all the way through and securing with nuts. Make sure to use thread locker along with the lock washers. As a rough guide, torque for M8 fasteners in aluminum should be 11-15 ft lbs, no torque spec is listed for the mounting hardware in the instructions.
It’s not bad, I was in a bind and needed a quick fix to get my truck back going. So first things first, the kit works. You can get rid of the steel lines and these will take their place. With about an hour and a half and a little research it doesn’t take much to get these hoses installed. However, I have some gripes about this kit.
1. You have to be very careful about how the lines are run to prevent the hose from kinking.
2. There are no p clamps or hardware included to hold the lines in place.
To improve this kit, I’d toss some hose clamps, a couple bolts with some p clamps to hold the hose, maybe a couple pictures on where to run things too, or even total install instructions. Stiffer hose would be good too, in my pictures you can see that the hose going to the front of the engine is trying to kink as it makes the bend to run beside the turbo.
It came with no gaskets this item deff needs to be sold with cover gasket as well as the seal for the crank even a plug for the vent or a fitting to hook a tube to the vent. Didn’t come with shit but bolts. Now I got to track everything else down seperatly makes it a pain in the ass. At this point I’d rather have stayed stock
AN line came apart on the hose barb with the clamping nut still tight within 2k miles. Almost nuked a brand new transmission before i could get it to the shoulder.
I installed them when I built my transmission. Hoses are good quality but fittings felt kind of cheap. Not a bad kit at all. I’d recommend it to anyone. Substantial trans temp difference after putting them on. My trans runs a lot cooler now that I’ve bypassed the heat exchanger. 2012 ram 2500 with 68rfe. 9/10 would recommend. Just be gentle with the fittings
Awesome upper coolant pipe. Just what I wanted polished to go with my other parts. Great price and fast shipping. Also entries to possibly win a bad ass Cummins.
Great replacement transmission line kit for the 4th gen trucks. Other thing I added was heat sock around the lines running by the turbo and down pipe. Also got another transmission by pass block that has removable line adapters, so you can use the AN adapters.
I installed this cooler and a few weeks later got into a wreck that was able to damn near total my truck, the frame is bent in 4 places and it shifted my ranch and bumper a foot. This cooler was the only radiator that survived everything else was destroyed and wrapped around the cooler. I called customer support and was able to order new stainless steel brackets and this cooler will live again. I’m very impressed with the quality and strength of this part and would gladly buy it for another truck.
Had a confusion on core for the value body. But once figured out the kit can in a week or less. Pretty easy install. Quality is super high and looks amazing.
I love the product. I am just upset that it wasn’t clear it doesn’t come with any hardware. I currently have no clue what barb fittings and hose sizes I need to get for the valve cover to my catch can. I am currently using a hardware store setup as this is my first Cummins and my first quality build of a truck. If there’s anyway you could assist me or point me in the right direction that would be awesome. Aside from that I’ve had nothing but compliments on it, I actually won top 10 truck and SCT x GFP in Nashville a few weeks back. Everyone including myself love the valve cover.
Edelbrock Part #7521 RPM Air-Gap intake manifold is designed for the small-block 302 CID Ford V8 or 331-347 stroker applications. The RPM Air-Gap incorporates the same race-winning technology that?s been used on our Victor Series competition intakes and is the perfect manifold for hot rodders, street machine enthusiasts, bracket racers or any builder looking for optimum performance in the 1,500-6,500 RPM range with a serious look of horsepower under the hood. The Air-Gap design features an open air space under the plenum that separates the runners from the hot engine resulting in a cooler, denser charge for more power. The 7521 RPM Air-Gap features larger runners (7% at the plenum entries) than the standard 7121 Performer RPM design that is beneficial to larger CID stroker engines. The 7521 includes nitrous bosses but no provision for exhaust heated chokes and no exhaust crossover. Edelbrock carbs will work with Ford automatic overdrive trans (AOD) when used with Lokar bracket SRK-4000. For more info go to www.lokar.com.