Holley & Motorcraft Carburetor Power Valve 7.5Hg

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Part Number: 70-175

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Description
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7.5Hg Powervalve for Motorcraft/Autolite and Holley Carburetors. Gasket included. US manufactured and ethanol ready.

CARBURETORS:

Autolite Motorcraft 2100

Autolite Motorcraft 2150

Autolite Motorcraft 4100

Holley 4010

Holley 4150, 4160

Holley 4165, 4175

Holley 4180

Holley 94, AA-1, 2110

Holley 2300

Power valves used to blow out anytime an engine back fired, but today's power valves are designed to last.

Under normal circumstances the power valve size in our carburetor kits are the correct size.

Under not so normal circumstances such as a built up engine, multiple carburetors the vacuum will be reduced and will require a power valve that opens up quicker.

IDENTIFYING CURRENT VALVE SIZE

How to read the HG on our power valves. Look at the face of the power valve (the shiny surface). Turn the valve so the number reads correctly and is on the right side. Example 8. Read the number at the bottom. Example 5. You have a power valve with 8.5HG.

The power valve stays closed until it reaches it's rated HG. In the example above the power valve won't open until the vacuum drops to 8.5HG.

TESTING VACUUM TO DETERMINE SIZE

Determine your power valve size by connecting a vacuum gauge to the manifold and read the HG under power (hold the break on and power up) and divide by 2 and round to the next .5 For example a reading of 15 HG would require a power valve size of 7.5 HG.

High performance and engines with multiple carburetors will have a lower vacuum reading thus requiring a lower power valve.

APPLICATIONS:

You must match your carburetor number to get the correct part.

MAKE

YEAR

MODEL

CYLS

AMERICAN MOTORS/NASH/RAMBLER

1958-66

250, 327 (REPL CARBS)

AMERICAN MOTORS/NASH/RAMBLER

1968-73

290, 304, 343, 360, 401

AMERICAN MOTORS/NASH/RAMBLER

1970-72

360, 390, 401 (REPL CARBS)

AMERICAN MOTORS/NASH/RAMBLER

1973

304, 350, 401 (REPL CARBS)

AMERICAN MOTORS/NASH/RAMBLER

1974

360 (calif)

CHEVROLET

1965

283, 327 (2 CARBS)

CHEVROLET

1965-66

327, 396, 427

CHEVROLET

1967-69

427 (TRI POWER)

CHEVROLET/GMC TRUCK

1983-90

366, 427

CHRYSLER

1967-70

383, 440 HP

CHRYSLER

1970

383

CHRYSLER

1972

440

CHRYSLER MARINE

440 Eng. -3 * 2 Bbl. Carbs

DIAMOND T

1952-55

HERCULES, QXLD 322 CARBS R-750, R-759

DODGE

1967-71

340, 383, 440

DODGE

1969-72

340, 440 (TRI POWER) hp (INC CANADA)

DODGE

1972

440 HP

DODGE TRUCK

1970-72

318, 413

EDSEL

1958

361, 410

EDSEL

1958-60

361, 410

F0RD/MERCURY

1957

272, 292 1ST FORD BUILT

FORD AGRICULTURE

330" Eng

FORD AGRICULTURE

361, 370, 429

FORD AGRICULTURE

391

FORD AGRICULTURE

391, 401, 477", 534" Eng

FORD AGRICULTURE

Industrial

FORD TRUCK

1934-53

90-100 HP

FORD TRUCK

1938-42

90-100 HP

FORD TRUCK

1957-59

272, 292

FORD TRUCK

1959-69

302, 332, 391, 401, 477, 534

FORD TRUCK

1965-78

361, 389,391, 401, 475, 477, 534 6.4L, 401"6.6L,475", 477"7.8L, 534"8.8L

FORD TRUCK

1973-74

460 (REPL CARB)

FORD TRUCK

1981

351 5.0L, 400 6.6L

FORD TRUCK

1981

5.0L 302" EXC CALIF

FORD TRUCK

1981-82

302" 5.0L, 351" M, W 5.8L (Exc Calif)

FORD TRUCK

1982

230 3.8L

FORD TRUCK

1983-85

302 5.0L, 351 5.8L

FORD/MERCURY

1934-53

MERCURY 90-100 HP

FORD/MERCURY

1938-42

90-100 HP

FORD/MERCURY

1939-48

MERCURY 90-100 HP

FORD/MERCURY

1957-1959

312, 332, 383, 430

FORD/MERCURY

1957-58

272, 292, 312, 332

FORD/MERCURY

1958-71

289, 302, 332, 351, 352, 390, 406, 428, 429, 430

FORD/MERCURY

1963-69

406, 427, 428 (2 CARBS HP)

FORD/MERCURY

1966

289 (2 CARBS)

FORD/MERCURY

1971-74

351, 429, 460 (INCL REPL CARB)

FORD/MERCURY

1972-76

351, CJ, 429, 460 (EXC CALIF) (REPL CARBS)

FORD/MERCURY

1973

302, 351 Export (Mexico)

FORD/MERCURY

1981

255 4.2L EXC CALIF

FORD/MERCURY

1981

255 4.2l, 302 5.0l (A4OD) EXC CALIF

FORD/MERCURY

1981

255, 302 A/T EXC CALIF

FORD/MERCURY

1982

230" 3.8L M/T (Exc Calif) (Exc Carb E2BE-VA, -ABA)

I.H.C.

1964-70

MODELS W/HOLLEY 2 BBL W/GOV CHK CARB NUM

I.H.C.

1964-74

304, 345

JEEP/WILLYS

1965-67

327

JEEP/WILLYS

1971-74

304, 360

LINCOLN

1937-48

V-12 MODELS K, ZEPHR 901,HB,86H 96H, ZEPHR/CONTINENTAL 06H,16H, 26H, CUSTOM 168H,268H, ALL 66H, 76H.876H

LINCOLN

1958

430", 8 CYL, LINCOLN, CONTINENTAL, SUPER MERCURY

LINCOLN

1958-59

430

LINCOLN

1971-74

429, 460 (REPL CARBS)

LINCOLN IND

1980

351" W 5.7L (A4OD A/T) CANADA

PLYMOUTH

1967-71

340" 5.6L, 383" 6.3L, 400" 6.6L, 440" 7.2L (Inc Repl Carbs)

PLYMOUTH

1972

440 (HP)

Click on Carb Number For Associated Parts.

CARBURETOR NUMBERS:

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Holley 94 rebuild kit

Carb parts perfect and service faultless

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Reviewed by: Wayne Douglas NICHOLSON from Runanga, New Zealand on 2/19/2025

R-1606A,R-1616A,R-1619-1A,R-1619A,R-1681-1A,R-1681A,R-1682-1A,R-1682A,R-1706-1,R-1706-2,R-1706-3,R-1706A,R-1707-1,R-1707-2A,R-1707-3A,R-1707-3AAS,R-1707-4A,R-1707-4AAS,R-1707A,R-1710-1A,R-1710-2A,R-1710-3A,R-1710-4A,R-1710-5A,R-1710-5AAS,R-1710-6AAS,R-1710A,R-1711-1A,R-1711-2A,R-1711A,R-1732A,R-1733,R-1734,R-1735,R-1736A,R-1737-1A,R-1737A,R-1738-1A,R-1738A,R-1740-1A,R-1740A,R-1748-2A,R-1769-1A,R-1769A,R-1770-1A,R-1770A,R-1771-1A,R-1771A,R-1772-1A,R-1772A,R-1779-1A,R-1779A,R-1780-1A,R-1780A,R-1797-1A,R-1798-1A,R-1806-1A,R-1806A,R-1807-1A,R-1807-1AAS,R-1807A,R-1835A,R-1836A,R-1837A,R-1837AAS,R-1837AS,R-1843A,R-1844-1AAS,R-1844A,R-1844AA,R-1844AAA,R-1844AAS,R-1847-1A,R-1847A,R-1848-1A,R-1848-1AAS,R-1848A,R-1848AAS,R-1849A,R-1849AA,R-1849AAS,R-1850-1AAA,R-1850-2AA,R-1850A,R-1850AAS,R-1855-1A,R-1855-1AS,R-1855A,R-1856-1A,R-1856-1AAS,R-1856-1AS,R-1856A,R-1857-1A,R-1857-1AAS,R-1857-1AS,R-1857A,R-1858-1A,R-1858-1AAS,R-1858-1AS,R-1858A,R-1859-1A,R-1859-1AAS,R-1859-1AS,R-1859A,R-1860-1A,R-1860-1AAS,R-1860-1AS,R-1860A,R-1863A,R-1864-1A,R-1864-1AAS,R-1864A,R-1866A,R-1868A,R-1924A,R-1929-1AAS,R-1929AAS,R-1952AAA,R-1952AAS,R-1957-1A,R-1958-1A,R-1974A,R-1974AAS,R-1980A,R-1980AAS,R-1980AS,R-1981A,R-1981AAS,R-1981AS,R-1982A,R-1982AAS,R-1982AS,R-1991-1A,R-1991-1AS,R-1991A,R-1992-1A,R-1992-1AS,R-1992A,R-2011-1A,R-2011A,R-2012-1A,R-2012-1AS,R-2012A,R-2012AS,R-2013-1A,R-2013-1A,R-2013A,R-2013AS,R-2014A,R-2015A,R-2015AS,R-202-AS,R-2022-1AAS,R-2022A,R-2022AAS,R-2022AS,R-2028A,R-2029A,R-2030A,R-2031A,R-2032A,R-2040-1A,R-2040-1AS,R-2040A,R-2040AS,R-2049A,R-2050A,R-2065A,R-2112A,R-2112AAS,R-2112AS,R-2142-1A,R-2142A,R-2143-1A,R-2143-1AAS,R-2143A,R-2143AS,R-2151-1A,R-2151-1AAS,R-2151-2AAS,R-2151A,R-2151AS,R-2152A,R-2152AS,R-2153-1AAS,R-2153A,R-2153AS,R-2154-1A,R-2154-1AAS,R-2154A,R-2154AS,R-2155-1A,R-2155-1AAS,R-2155A,R-2155AS,R-2156-1A,R-2156-1AAS,R-2156-2AAS,R-2156A,R-2156AS,R-2157-1A,R-2157-1AAS,R-2157-1AS,R-2157A,R-2158-1A,R-2158-1AAS,R-2158-1AS,R-2158A,R-2228A,R-2228AS,R-2233A,R-2234A,R-2234AS,R-2235A,R-2235AS,R-2258A,R-2258AS,R-2328,R-2328A,R-2328AS,r-2348,R-2348A,R-2348AS,R-2349-1A,R-2349-1AAS,R-2349A,R-2349AS,R-2378-1A,R-2378-1AS,R-2378A,R-2379-1A,R-2379-1AS,R-2379A,R-2379AS,R-2415A,R-2436A,R-2436AAS,R-2436AS,R-2437A,R-2437AAS,R-2437AS,R-2442-1A,R-2442-2A,R-2442A,R-2463-1A,R-2463-1AAS,R-2463-2A,R-2463-2AAS,R-2463A,R-2463AAS,R-2464A,R-2487A,R-2488A,R-2488AS,R-2489A,R-2489AAS,R-2489AS,R-2497A,R-2497AAS,R-2497AS,R-2498A,R-2498AS,R-2499A,R-2499AAS,R-2499AS,R-2520-1A,R-2520-1AAS,R-2520-2A,R-2520-3A,R-2520-3AAS,R-2520A,R-2524A,R-2540-1A,R-2540-1AAS,R-2540-1AS,R-2540-2AAS,R-2540A,R-2540AS,R-2582-1A,R-2582A,R-2583A,R-2583AS,R-2599A,R-2599AAS,R-2599AS,R-2603AAS,R-2640A,R-2652-1A,R-2652-1AAS,R-2652-1AS,R-2660-1A,R-2660-2A,R-2668A,R-2668AAS,R-2687A,R-2703-1A,R-2703-1AAS,R-2703-2A,R-2703-2AAS,R-2703-3A,R-2703-3AAS,R-2703-4A,R-2703A,R-2703AAS,R-2704-1A,R-2704-1AAS,R-2704-2A,R-2704-2AAS,R-2704A,R-2704AAS,R-2705-1A,R-2705-1AAS,R-2705-2A,R-2705-2AAS,R-2705A,R-2705AAS,R-2705AS,R-2744A,R-2744AAS,R-2745A,R-2745AAS,R-2746A,R-2746AAS,R-2747A,R-2747AAS,R-2748A,R-2748AAS,R-2804,R-2804A,R-2804AAS,R-2804AS,R-2805A,R-2805AAS,R-2805AS,R-2867A,R-2867AAS,R-2868A,R-2868AAS,R-2881-1AAS,R-2881A,R-2881AAS,R-2882-1AAS,R-2882A,R-2882AAS,R-2926A,R-2926AAS,R-2926AS,R-2927A,R-2927AAS,R-2927AS,R-2929A,R-2934A,R-2975-1A,R-2975A,R-2976-1A,R-2976-2A,R-2976-3A,R-2977-1A,R-2977-1AAS,R-2977-2A,R-2977-2AAS,R-2977-3A,R-2977A,R-2978-1A,R-2978-2A,R-2978-3A,R-2978-4A,R-2978A,R-2980A,R-2981-1A,R-2981-2A,R-2981A,R-3005,R-3044A,R-3045A,R-3074A,R-3074AAS,R-3075AAS,R-3113AAS,R-3114AAS,R-3115AAS,R-3139-1A,R-3139-1AAS,R-3139A,R-3140-1A,R-3140A,R-3155-2,R-3155A,R-3201A,R-3201AAS,R-3202A,R-3203A,R-3203AAS,R-3208A,R-3208AAS,R-3220AAS,R-3230A,R-3230AAS,R-3233-1A,R-3267A,R-3267AAS,R-3268A,R-3268AAS,R-3300A,R-3300AAS,R-3301A,R-3301AAS,R-3360A,R-3360AAS,R-3361A,R-3361AAS,R-3367A,R-3367AAS,R-3370A,R-3391A,R-3391AAS,R-3394-1A,R-3394-1AAS,R-3394A,R-3394AAS,R-3410A,R-3410AAS,R-3411A,R-3411AAS,R-3419A,R-3419AAS,R-3420A,R-3485A,R-3485AAS,R-3486AAS,R-3487A,R-3487AAS,R-3488AAS,R-3489AAS,R-3490AAS,R-3491AAS,R-3492AAS,R-3502-2A,R-3502-2AAS,R-3503-1A,R-3503-1AAS,R-3503-2A,R-3503-2AAS,R-3503-3AAS,R-3503A,R-3505-3AAS,R-3551-1A,R-3551-1AAS,R-3551A,R-3551AAS,R-3552-1A,R-3552-1AAS,R-3552-2A,R-3552A,R-3552AAS,R-3575-1A,R-3575-2AAS,R-3575A,R-3602-1A,R-3602-1AAS,R-3602A,R-3602AAS,R-3605A,R-3605AAS,R-3606A,R-3606AAS,R-3608A,R-3608AAS,R-3609A,R-3609AAS,R-3649-2A,R-3649-3A,R-3659A,R-3659AAS,R-3660A,R-3666-1AAS,R-3666A,R-3667-1A,R-3667-1AAS,R-3667-2AAS,R-3667A,R-3667AAS,R-3667AS,R-3679-1A,R-3679-2A,R-3679-3A,R-3679-3AAS,R-3797-1A,R-3797-1AAS,R-3797A,R-3797AAS,R-3798-1A,R-3798A,R-3798AAS,R-3799-1A,R-3799A,R-3799AAS,R-3855-1A,R-3855-1AAS,R-3855A,R-3855AAS,R-3863-1A,R-3863-1AAS,R-3863-2A,R-3863A,R-3863AAS,R-3864-1A,R-3864-2A,R-3864A,R-3864AAS,R-3865-1A,R-3865-1AAS,R-3865-2A,R-3865A,R-3865AAS,R-3866-1A,R-3866-1AAS,R-3866-2A,R-3866A,R-3866AAS,R-3867-1A,R-3867-1AAS,R-3867-2A,R-3867A,R-3867AAS,R-3868-1A,R-3868-1AAS,R-3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Holley & Motorcraft Carburetor Power Valve 7.5Hg

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