Page 126 - 2018 Racecar Engineering Hot Rod and Early Muscle Car Parts and Accessories Catalog

ProFlo Maximum Electric Water Pumps Protorque Starters
3XPSV KDYH DGMXVWDEOH FDP VWRSV DQG DFFHSW Starters have 1.9 horsepower and a 4:1
stock brackets. Pumps add horsepower by gear reduction ratio for exceptional crank-
eliminating the drive belt and fan, plus they LQJ SRZHU 7KH\ ZHLJK MXVW SRXQGV DQG
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street or strip, aluminum housings have DQFH &95 LQ QRW DGMXVWDEOH
billet aluminum impellers, stainless Part No. Description
steel shafts and carbon ceramic seals. CVR1337 Chrysler V8 And I-6
Stainless fasteners are included. CVR5048 Ford 351M-400, 429-460
Part No. Description CVR5055 SB Ford 289-351W, AT Or MT 4/5-Speed
CVR7550 Small Block Chevy 265-400, 60 GPM CVR5311 Olds 307-455/Pontiac 326-455
CVR7554 Big Block Chevy 396-454, 60 GPM CVR5323 Chevy V8, 153/168T
CVR6551 GM LT-1, 55 GPM CVR5323OS Chevy V8, 168T, Staggered Mount
CVR6540 Big Block Chrysler 383-440, 55 GPM CVR5414 GM LS Series Engines
CVR7426 Big Block Chrysler 383-440, Housing Only
Quick Change 10 Lb.
Billet Aluminum Throttle Cable Brackets Nitrous Bottle Holders
CNC-machined from billet +HDY\ GXW\ ¿QJHU NQREV DOORZ
aluminum, brackets are easily TXLFN ERWWOH FKDQJHV DQG UXE-
mounted to base of Holley 4150 EHU ULQJV ¿UPO\ KROG WKH ERWWOH
carburetors and accept GM snap-in or without scratching. Choose
Morse 33-C throttle cables. An optional throttle return spring assem- EOXH RU FOHDU DQRGL]HG ¿QLVK
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Part No. Description
Description Clear Red
CVRNO67BL Blue
Throttle Cable Bracket, GM/Morse 33-C Cable CVR64150CL CVR64150R Bottle not included.
CVRNO67CL Clear
Throttle Return Assembly CVR64151CL CVR64151R
Billet Aluminum 12-Volt Electric Vacuum
Timing Covers Pumps CVRVP555
Precision machined, anodized alumi-
Two-piece covers prevent camshaft num pumps are for vehicles using engine
movement for accurate timing; cam may combinations that provide little or no
be changed without disturbing the oil pan PDQLIROG YDFXXP :KHQ YDFXXP GURSV EH-
seal. Includes bolts, gaskets, seal, cam low 15" of vacuum, the pump activates and
button and shims. Choice of clear or red increases the brake vacuum level to 20".
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Description Clear Red hookup the positive/negative power supply.
Small Block Chevy 265-400 Timing Cover CVRTC2350CL CVRTC2350R
Big Block Chevy 396-454 Timing Cover CVRTC2454CL CVRTC2454R

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best, your newly rebuilt engine could be the victim of low engine vacuum. Normal vacuum for a
stock engine is between 17" Hg - 22" Hg at idle with the engine at operating temperature. If the
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which include but are not limited to, worn piston rings, leaking intake gaskets or leaking car-
buretor to intake manifold gaskets. These three conditions are usually found in used engines
with high mileage and ready for a rebuild. Using a vacuum gauge will help pinpoint the
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2,000 feet elevation the reading will be approximately one inch lower per each 1,000 feet
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at steady idle and there are intermittent dropping of 3"-5", sticky valves could be the culprit.
At 3000 RPM's and the pointer changes rapidly as the RPM's are increased, this is an indi-
cation of weak valve springs. Steady 8"-14" at idle points to incorrect valve timing and steady
14"-16" at idle means incorrect ignition timing. Low vacuum in a recently rebuilt engine can
point to the installation of a camshaft with too much valve overlap/duration. If the low vacuum
condition is determined to be a result of the short duration camshaft, an electric vacuum pump is
the cure. These units are simple to install and will regulate the vacuum level itself.

2018 HOT ROD AND EARLY MUSCLE 125