12556121 - Third Generation F-Body Message Boards - Threads Tagged with 12556121

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Threads Tagged with 12556121

Threads Tagged with 12556121

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12530283, 12556121, 350, car, flexplate, formula, gm, rocket

Pick My New Engine - '89 Formula 350

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Multi-page thread

1 2)

kx3g on 01-25-2013

06-20-2013 12:25 PM
by Tuned Performance

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56

2,457

Tech / General Engine

12556121, 350, 416, 470470, build, buy, cams, gm, heads, howards, ls, mild, motor, rebuild, sbc, solid, torque, vortecs

3 Attachment(s)

A solid 350 build plan?

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Multi-page thread

1 2)

bradley23150 on 07-18-2011

10-24-2011 03:43 PM
by bradley23150

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75

4,694

12556121, aluminum, block, chevy, engine, gm, heads, kit, l31, long, longblock, rebuild, roller, short, vortec, zz4

ZZ4 or L31 Longblock? which way should I go?

robertfrank on 01-24-2010

01-28-2010 12:14 PM
by Booty_Con

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3

7,573

0919, 12556121, 350, afr, block, engine, fbody, gm, good, heads, intake, l31, miniram, short, specs, swap

my engine 350 swap thread

davidGTA on 11-09-2009

11-11-2009 04:18 PM
by five7kid

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2

1,222

12556121, 350, chain, flow, fuel, gm, idle, injector, injectors, made, pressure, problems, setting, shorting, tfs89024, timing, trick

Injectors too short?

85IrocTim on 06-07-2009

06-09-2009 03:09 PM
by 85IrocTim

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16

3,534

059, 10185071, 10243779, 12551705, 12556121, 383, camshaft, free, gm, l31, l69, part, shipping, specs, tbi, vortec

1 Attachment(s)

TBI: Condensed Performance Synopsis

robertfrank on 08-26-2008

11-14-2008 12:21 PM
by dctrumpet

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22

10,523

12556121, 211257265, 265, 327, 383, 496, cam, engine, good, isky, l31, limit, rpm, rpms, safe

3 Attachment(s)

RPM limit of this engine

Cobra289 on 08-15-2007

08-16-2007 04:01 PM
by Cobra289

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7

2,569

Tech / General Engine

12510735, 12556121, 80912499529, block, crate, gm, intake, pistons, short, type

need advice for future 350

rwdtech on 07-25-2006

10-02-2006 07:51 PM
by rwdtech

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20

1,215

12556121, 3418h, block, car, claimer, cobra, engine, gm, h631cp, kit, l31, partial, piston, trans, wow

1 Attachment(s)

Engine build based on partial block # 12556121

Cobra289 on 09-04-2005

09-08-2005 09:20 PM
by F-BIRD'88

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10

5,864

Tech / General Engine

12510737, 12556121, 350, 67, 87, aftermarket, block, cc, chamber, edlebrock, factory, heads, l31, manifold, milling, sale, short, tpi

Aftermarket heads w/TPI Question

PONTIMANIAC 90 on 04-06-2002

04-08-2002 12:32 AM
by PONTIMANIAC 90

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13

996

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