COPO 427/425 Hi-Ram Intake Manifold Fits LS7 style intake ports and bolt pattern

Name: COPO 427/425 Hi-Ram Intake Manifold Fits LS7 style intake ports and bolt pattern
Brand: CHEVROLET PERFORMANCE
SKU: 809-17802810
Price: 1985.31 USD
Availability: InStock

Color:

^$1,985³¹

Ships on 09/16/2026

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COPO Hi-Ram Intake Manifolds

Fits LS7 style intake ports and bolt pattern
Includes fuel rails
Throttle body NOT included

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

COPO is an acronym for the Central Office Production Order that was used by many savvy performance Chevrolet dealerships in the 1960s to obtain muscle cars optioned with exotic extreme performance drivetrain options that General Motors did not typically offer to the public. With the release of the new race-only COPO Camaro drag race platform Chevrolet Performance is once again giving everyone a chance to obtain a piece of modern history. The Chevrolet Performance COPO Hi-Ram Intake Manifolds are an example of this prestige and history combining the race winning Holley LS Hi-Ram EFI specifications with an embossed COPO logo above the throttle body inlet.

This cast aluminum intake has been designed to be an alternative solution to fabricated sheet-metal intakes on extreme performance engines. Intended for use where hood clearance is not a factor this intake features straight 6-1/2'' long runners with an overall height of just over 11'' to produce maximum power on naturally aspirated or forced induction engines using high flowing cylinder heads at 7,000 to 8,000 RPM! These intake manifolds are the perfect choice for any LS powered drag race, muscle car, marine, off-road, sand rail, pulling truck or street-rod application that wants the distinction of carrying the COPO name into the future!

Specific Dimensions:

Height - 11.08'' to the lifter valley cover flange on engine block
Base Plenum Top Mounting Flange Height - 8.42'' to the lifter valley cover flange on engine block
Port Size - 2.49'' Height x 1.21'' Wide
Mounting Flange Gasket Type - Standard Molded O-Ring
Plenum Top Gasket Type - 3/32'' Round O-ring Cord
Runner Length - 6.50'', As-Cast Runner Cross-Sectional Area - Tapered 4.25'' to 2.77''
EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits

Part TypeIntake Manifold

Product LineChevrolet Performance COPO Hi-Ram Intake Manifolds

BrandCHEVROLET PERFORMANCE

Package Height15.0

Package Width16.1

Package Length26.9

Weight35.25 PG

Part CategoryPerformance Parts

Gasket Or Seal IncludedNo

ColorNatural

Outlet Port Quantity8

Mounting Stud Quantity0