Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on January 25, 1996.
As of Monday, November 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

ModelsModification
1988-1995 trucks originally equipped with a GM 454 CID. (7.4L) gasoline engine.Cylinder bored to increase displacement from 7.4L to 8.2L and existing piston replaced with larger piston, ported and polished cylinder heads, and an increase in lift and duration on the camshaft. The stock mechanical fuel pump is removed and replaced by an electronic fuel pump.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-126-3
  • Executive Order 126-3 / D126-3
  • ARB # D-126-3
  • Executive Order No: D-126-3
  • C.A.R.B. No. D-126-3
  • Resolution D-126-3
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-126-3 PDF

D-126-3 Document:

CARB_D-126-3

{Page 1 of 2) State of California AIR RESOURCES BOARD EXECUTIVE ORDER D—126—3 Relating to Exemptions Under Section 27156 of the Vehicle Code GM SERVICE PARTS OPERATIONS GM PERFORMANCE PARTS 8.2L ENGINE Pursuant to the éuthority vested in the Air Resources Board (ARB) by Section 27156 of the Vehicle Code; and Pursuant to the authority vested in the undersigned by Sections 39515 and 39516 of the Health and Safety Code and Executive Order G—45—9; IT IS ORDERED AND RESOLVED: That the installation of the GM Performance Parts 8.2L Engine, P/N 12360893, manufactured by GM Service Parts Operations of 6060 West Bristol Road, Flint, Michigan 48554, has been found not to reduce the effectiveness of the applicable vehicle pollution control system and, therefore, is exempt from the prohibitions of Section 27156 of the Vehicle Code on 1988—95 trucks originally equipped with a General Motors 454 cid. (7.4L) gasoline engine. This Executive Order is valid provided that installation instructions do not recommended tuning the vehicle to specifications different than those of the vehicle manufacturer. j j GM Performance Parts 8.2L (8.2L) Engine is a new 7.4L long block that is reworked to increase the displacement of the original engine from a 454 cid. (7.4L) to a 8.2L (8.2L). Modifications made to the original 7.4L engine design include a larger cylinder bore, larger pistons, ported and polished cylinder heads, and an increase in lift and duration on the camshaft. The stock mechanical fuel pump is removed and replaced by an electronic fuel pump . Changes made to the design or operating conditions of the GM Performance Parts 8.2L Engine, as exempt by the ARB, which adversely affect the performance of a vehicle‘s poliution control system shall invalidate this Executive Order. Marketing of this GM Performance Parts 8.2L Engine using any identification other than that shown in this Executive Order or marketing of the GM Performance Parts 8.2L Engine for an application other than those listed in ;his Efiecxégve Order shall be prohibited unless prior approval is obtained rom the . ' This Executive Order does not constitute any opinion as to the effect that the use of this GM Performance Parts 8.2L Engine may have on any warranty either expressed or implied by the vehicle manufacturer. THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION, APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED BENEFITS OF GM PERFORMANCE PARTS 8.2L .ENGINE. ‘

GM Service Parts Operations EXECUTIVE ORDER D—126—3 (Page 2 of 2) No claim of any kind, such as "Approved by the Air Resources Board" may be made with respect to the action taken herein in any advertising or other oral or written communication. Violation of any of the above conditions shall be grounds for revocation of this order. The order may be revoked only after ten day written notice of intention to revoke the order, in which period the holder of the order may request in writing a hearing to contest the proposed revocation. If a hearing is requested, it shall be held within ten days of receipt of the request and the order may not be revoked until a determination after hearing that grounds for revocation exist. bntelhanit \Executed at El Monte, California, this )&Sflaay of January 1996. fiqu. B. Summerfield ~ Assistant Division Chief Mobile Source Division

State of California AIR RESOURCES BOARD EVALUATION OF GM SERVICE PARTS OPERATIONS GM PERFORMANCE PARTS 8.2L ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS January 1996

State of California AIR RESOURCES BOARD EVALUATION OF GM SERVICE PARTS OPERATIONS GM PERFORMANCE _PARTS 8.2L ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS by Mobile Source Division 9528 Telstar Avenue El Monte, CA 91731—2990 (This report has been reviewed by the staff of the California Air Resources Board and approved for publication. Approval does not signify that the contents necessarily reflect the views and policies of the Air Resources Board, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.)

GM Service Parts Operations of 6060 West Bristol Road, Filint, Michigan 48554, has applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code (VC) for their GM Performance Parts 8.2L Engine. The GM Performance Parts 8.2L Engine is designed for installation on i988-95 trucks originally equipped with a General Motors 454 cid. (7.4L) gasoline engine. GM Service Parts Operations submitted a completed application and other required information. Based on results of emissions testing, the staff concludes that GM Service Parts Operations‘ GM Performance Parts 8.2L Engine will not adversely affect the exhaust emissions on those applicable vehicles for which an exemption is requested. The staff recommends that GM Service Parts Operations be granted an exemption as requested and that Executive Order D—126—3 be issued.

TABLE OF CONTENTS Page Number SUMMARY j i CONTENTS i1 I. INTRODUCTION 1 II. CONCLUSION 1 III. RECOMMENDATION . 1 IV. GM PERFORMANCE PARTS 8.2L ENGINE DESCRIPTION 1 V. DISCUSSION OF GM PERFORMANCE PARTS 8.2L ENGINE 2 11

EVALUATION OF GM SERVICE PARTS OPERATIONS GM PERFORMANCE PARTS 8.2L ENGINE FOR EXEMPTION FROM THE PROHIBITIONS OF VEHICLE CODE SECTION 27156 IN ACCORDANCE WITH SECTION 2222, TITLE 13, OF THE CALIFORNIA CODE OF REGULATIONS I. INTRODUCTION GM Service Parts Operations of 6060 West Bristol Road, Flint, Michigan 48554, has applied for an exemption from the prohibitions in Section 27156 of the California Vehicle Code {VC) for their GM Performance Parts 8.2L Engine. The GM Performance Parts 8.2L Engine is designed for installation 1988—95 trucks originally equipped with a General Motors 454 cid. (7.4L) gasoline engine. GM Service Parts Operations submitted a completed application and other required information. II. CONCLUSIONS Based on results of emissions testing, the staff concludes that GM Service Parts Operation‘s GM Performance Parts 8.2L Engine will not adversely affect the exhaust emissions on those applicable vehic1es for which an exemption is requested. III. RECOMMENDATION The staff recommends that GM Service Parts Operations be granted an exemption for their GM Performance Parts 8.2L Engine for installation on 1988— 95 trucks originally equipped with a General Motors 454 cid. (7.4L) gasoline engine. The staff also recommends that Executive Order D—126—3 be issued. IV. GM PERFORMANCE PARTS 8.2L ENGINE DESCRIPTION GM Service Parts Operations‘ GM Performance Parts 8.2L Engine has been specifically designed for installation on 1988—95 trucks originally equipped with a General Motors 454 cid. {(7.4L) gasoline engine. The modified engine operates in conjunction with tfie original equipment manufacturer‘s (OEM) computer controlled fuel injection system and emission control system already certified with the stock engine. —1—

GM Performance Parts 8.2L (8.2L) Engine is a new 454 cid. (7.4L) long block that is reworked to increase the displacement of the original engine from a 454 cid. to a 8.2L Modifications made to the original 7.4L engine design include a larger cylinder bore, larger pistons, ported and polished cylinder heads, and an increase in lift and duration on the camshaft. The stock mechanical fuel pump is removed and replaced by an electronic fuel pump. The new camshaft, when compared to OEM, increases the lTift by 6 percent on the intake and exhaust lobes. Valve duration is lengthened by 8 percent on the intake lobe and 11 percent on the exhaust Tobe. The cylinder heads are machined at both the exhaust and intake ports to allow for greater air flow. The new engine uses all of the vehicle‘s original air intake and fuel delivery equipment with no modification made to either the ignition system or the factory PROM chip. v. DISCUSSION OF GM PERFORMANCE PARTS 8.2L ENGINE GM Service Parts Operations has requested that the GM Performance Parts 8.2L Engine be exempted for 1988—95 trucks originally equipped with a General Motors 454 cid. (7.4L) gasoline engine. A 1993 7.4L Suburban was used as the test vehicle. GM Service Parts Operations performed comparative emissions testing at Automotive Testing Laboratories, Inc. in New Carlisle, Indiana. The horsepower and inertia settings for the vehicle were at 7000 lbs. and 18.6, the results of the exhaust emissions tests are shown below. CVS—75 TEST RESULTS NMHC CO NOx Baseline 0.57 8.97 3.73 Modified 0 .60 5.73 3.38 Difference +0.03 —3.24 —0.35

Comparative emissions testing demonstrated that the installation of the GM Performance Parts 8.2L Engine did not significantly increase taiipipe emissions, and is within the 10% or 0.1 gm/mi increase on NMHC and NOx, and 15% or 1.0 gm/mi on CO. The Air Resources Board did not conduct confirmatory testing to validate the emission test results submitted by GM Service Parts Operations. GM Service Parts Operations has submitted all the required information and has fulfilled the requirements for an exemption. Test results show that the GM Performance Parts 8.2L Engine meets the requirements for an exemption.


Document Created: 2005-09-01 12:41:07
Document Modified: 2005-09-01 12:41:07

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