dcr - LS1TECH - Camaro and Firebird Forum Discussion

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bogart, calculations, calculator, calulator, cam, camshaft, d10, dcr, event, events, fbody, som, spreadsheet, timing, valve

Updated Valve event / DCR / SCR / Header length spreadsheet

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1 2 3)

J-Rod on Sep 17, 2004

Mar 29, 2024 07:09 PM
by Shtstr

59

140,563

Advanced Engineering Tech

105, 121, compression, corvette, dcr, e85, engine, gas, ls1, ls2, max, na, octane, pump, ratio

max compression for na e85 motor??

aaron.kent.76 on Aug 1, 2010

Jul 31, 2017 04:58 PM
by .boB

19

30,479

Generation III Internal Engine

61, cam, cc, dcr, engine, head, ls1, ls1tech, ls2, stock

please confirm DCR calculation of LS2 combo

TXsilverado on Jan 21, 2014

Jan 22, 2014 08:06 PM
by redtan

1

1,278

Generation IV Internal Engine

What's The Best DCR SCR Calculator?

Greg_E on Jan 17, 2014

Jan 18, 2014 03:09 PM
by 99Bluz28

6

1,960

Generation III Internal Engine

178, adbc, add, cam, comp, dcr, find, headers, increas, kooks, ls1, procentage

Need help calculating DCR

whitedevilWS6 on Jul 2, 2013

Jul 2, 2013 07:25 PM
by therabidweasel

15

1,150

Generation III Internal Engine

351w, 91, calculator, close, dcr, gas, high, intake, ls1, ls3, lt1, pump, real, running, sales, time

DCR and pump gas question

ice95z on Nov 21, 2012

Mar 28, 2013 11:53 AM
by JakeFusion

19

7,743

Advanced Engineering Tech

004, 006, 050, 15, add, atdc, dcr, degrees, eps, ivc, ls1tech

need help with scr/dcr numbers please

outkast6991 on Feb 15, 2013

Feb 16, 2013 05:46 PM
by outkast6991

14

1,175

Generation III Internal Engine

85, dcr, ethanol, ls1tech, maximum, nitrouse, quench, question

Quench and DCR Question

JakeFusion on Nov 19, 2012

Nov 20, 2012 11:48 PM
by SS10Tech

9

1,213

Generation III Internal Engine

410, assembly, builders, compression, dcr, dynamic, e85, engine, fargond, ls1, ls3, manley, rotating, stock, stroke

Engine builders, Tuners, chime in! DYNAMIC COMPRESSION SITUATION ADVICE NEEDED!

LT1STROKER on Oct 15, 2012

Oct 16, 2012 01:11 AM
by LT1STROKER

7

1,518

Generation IV Internal Engine

53, cam, comp, dcr, eps, lobes, low, ls1, lxl, make, mods, monster, needed, spray, torque

need torque monster cam that is spray friendly

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1 2)

hotrodth on Aug 21, 2012

Aug 28, 2012 08:04 PM
by Sales@Tick

24

5,309

Generation III Internal Engine

118, 408, 93, 97, afr, boost, boosted, comp, compression, dcr, gas, lq9, octane, pump, ratio, safe, z06

what is the ideal afr,static comp, and dynamic comp for a boosted 10 psi 408 lq9 ?

c5z16z on Aug 25, 2012

Aug 26, 2012 09:01 PM
by Sales@Tick

6

1,987

Forced Induction

231239, 408, big, cam, camshaft, compression, dcr, engine, gen5, low, lower, ls1, ls1tech, overlap, smaller, tweener

Compression for my 408 with this cam...too low?

Stroker2112 on Aug 16, 2012

Aug 17, 2012 07:00 AM
by Stroker2112

9

1,455

Generation III Internal Engine

1070, 89, bar, brackets, car, dcr, handling, lack, lowered, ls1, ls1tech, oversteer, relocation, road, scr, snap, sway, wanders

So whats up with my handling?

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1 2 3)

stroked383HSR on Jun 29, 2012

Jul 30, 2012 09:53 AM
by BMR Tech2

56

4,578

Suspension & Brakes

12.5 auto ss

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1 2)

G.T. CHRIS on Dec 3, 2010

Jul 10, 2012 02:27 PM
by ROMERO98Z28

22

3,178

12 Second Club

117, 383, 408, 408w, chevy, closing, compression, cranking, dcr, engine, gas, intake, ls, ls1tech, max, point, pump, valve

max compression to run on 93

SStressin on Jun 25, 2012

Jul 1, 2012 04:55 PM
by LS1 Racing

12

3,114

Generation III Internal Engine

1600cc, a1000, aem, c5, c5z06, ccw, ccws, dcr, fsft, louis, perfect, red, sale, silver, slammed, sp500, st, t04z, z06

FS/FT Perfect C5 Z06

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1 2)

NBM99SS on Dec 29, 2011

Jun 29, 2012 09:06 PM
by NBM99SS

24

7,266

Vehicle Classifieds

045, 241, 241s, 243s, 61, cam, cc, chambers, compression, dcr, equals, ls1, milled, milling, rwhp, tsp, v2

Will my DCR be too high?

spicebird98 on May 29, 2012

May 30, 2012 10:02 AM
by dtroike

7

1,262

Generation III Internal Engine

blown, centerfuge, centrifugal, compression, dcr, dynamic, engine, forced, induction, ls1, ls6, maximum, scr, setup, target, works

Ideal DCR / SCR for centrifugal setup

vmapper on May 12, 2012

May 13, 2012 06:08 PM
by I8UR4RD

5

1,430

Forced Induction

113, 142, 383, 91, compression, dcr, dyno, e85, effective, gas, levels, race, ratio, results, safe, static

Static Compression Race/Pump.

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1 2 3)

F0x Slaughter on May 7, 2012

May 10, 2012 06:48 PM
by Melkor

44

6,591

LT1-LT4 Modifications

cam, cams, comperssion, dcr, dynamic, engine, increase, ls, ls2, yo

Want to increase DCR

qwikz28 on Mar 17, 2012

Mar 20, 2012 05:10 AM
by mark21742

6

1,396

Generation III Internal Engine

affect, build, cam, compression, dcr, displacement, dynamic, effect, engine, high, increase, l99, low, motor, power, vvt

VVT effect on DCR. (question)

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1 2)

Mr. Sir on Jan 26, 2012

Mar 13, 2012 05:37 AM
by Mr. Sir

38

3,745

Generation III Internal Engine

Can someone double check my DCR?

Pray on Feb 1, 2012

Feb 1, 2012 06:07 PM
by Pray

0

477

Generation IV Internal Engine

0050, 1021, 222, abdc, begin, calculation, cam, compression, dcr, drc, duration, engine, formula, ls1tech, ratio

10.2:1 dcr?

themealonwheels on Jan 17, 2012

Jan 19, 2012 10:33 AM
by mark21742

10

2,307

Generation III Internal Engine

216224, 373, 390, calculator, cam, crane, dcr, doctor, gears, ls1, results, rpm, sbc, th400, vista

My DCR Calculator - If you have a Comp grind, it doesn't get any easier than this...

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pianoprodigy on Dec 27, 2006

Jan 14, 2012 06:27 PM
by Pray

157

37,742

Generation III Internal Engine

185psi, 230, 93, abdc, calculator, closing, cranking, dcr, dynamic, intake, ls1, ls1tech, octane, perfect, pressure, psi

DCR & Pressure

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1 2)

Paul57 on Dec 9, 2011

Dec 18, 2011 02:25 AM
by jimbob

26

5,393

Generation III Internal Engine

040, 131, 250, 370, build, compression, dcr, gasket, head, ls2, ls3, na, scr, sdlc, stock, tsp

Please help with SCR and DCR (LS3 h/c build)

UltraZLS1 on Dec 1, 2011

Dec 3, 2011 06:23 AM
by UltraZLS1

8

2,080

Generation IV Internal Engine

111, boost, comp, dcr, e85, high, motor, streetcar, turbo

is 11.1 comp to much

Ls_Nova on Nov 27, 2011

Nov 29, 2011 04:51 PM
by Ls_Nova

9

1,847

Forced Induction

11, 2000, 243, compression, dcr, engine, head, heads, high, hp, ideal, lq4, performance, ratio, rpms, torque, w243

lq4 243 combo tech question - ideal scr and dcr

low2001gmc on Sep 19, 2011

Sep 20, 2011 12:58 PM
by Whiteaw57

6

4,604

Generation III Internal Engine

02, 15, 53, 85, calculators, compression, dcr, dynamic, higher, mustang, octane, rate, ratio, static, street

Dynamic Compression Ratio woes

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1 2)

Nebulus on Aug 26, 2011

Sep 11, 2011 12:12 PM
by Nebulus

26

5,921

Generation III Internal Engine

227230, 675, 799s, cam, dcr, eps, gain, ls1, ls1tech, patg, prc, slp, springs

Pat G/EPS Cam, Milled 799s, what will it make?

NVR_SPDS on Jun 17, 2011

Jul 17, 2011 09:20 PM
by *02WS6TURK*

5

989

Dyno Guesses & Bench Racing Forum

1105, 408, 86, 93, compression, dcr, gas, height, knock, ls, ls1tech, mahle, octane, pump, retard, tolerate

How much DCR is too much?

Hemi Killer on Jun 1, 2011

Jun 2, 2011 08:53 PM
by chrs1313

10

2,535

Generation III Internal Engine

243, 60, 62, afr, aftermarket, dcr, detonation, etpcathedralportcilynder, g8, gt, hads, heads, ls1, ls2, makes, market

AFR/ETP/etc. Aftermarket Heads --> Can they handle higher DCR?

02RedHawk on Sep 4, 2006

May 14, 2011 12:15 AM
by blk~2000~Z28

10

1,545

Generation III Internal Engine

220, 220220, 220220110, 48, 48l, cam, dcr, eps, ls1tech, ls3, overlap

What Would DCR Be For 220/220 110+4 Cam on XER Lobes in 4.8L or LS1?

dug on May 3, 2011

May 3, 2011 10:03 PM
by mtuggle86

1

893

Generation III Internal Engine

93, cam, camshaft, dcr, end, f13, huge, low, ls1, max, overlap, performing, tech, torque, xer281hr

Best low end torque cam for LS1..

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SSCoulter on May 27, 2005

Apr 18, 2011 01:20 AM
by getcha 01

264

171,841

Generation III Internal Engine

040, 265lr, 53, 58cc, carburetor, dcr, gasket, head, heads, hr12, lm7, ls1, ls1tech, mill, milled, scr

Help with verifying SCR and DCR

JohnDaMan on Apr 14, 2011

Apr 15, 2011 05:59 PM
by intenseblue

3

1,476

Generation III Internal Engine

280, 373, affect, cam, cams, compression, dcr, diet, lt1, max, pcmforless, powered, tune, vbulletin, volumetrics, xfi

drop my SCR or get a bigger cam?

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1 2)

Zac28 on Apr 6, 2011

Apr 14, 2011 10:51 PM
by Wicked94Z

21

2,322

LT1-LT4 Modifications

93, calculator, dcr, detonation, e85, head, highest, login, low, ls1, octane, optimum, relationship, scr, sluggishness

DCR/SCR in relationship to motor "sluggishness"

ZexGX on Jan 13, 2011

Mar 16, 2011 01:54 PM
by KILLER-LS1

13

3,573

Advanced Engineering Tech

Calculate scr and dcr...

Anthony '00 WS6 on Mar 15, 2011

Mar 15, 2011 11:09 PM
by 98blueSScamaro

10

1,293

Generation III Internal Engine

12498544, 228r, 391, 53, advertised, bore, cam, dcr, duration, gm, lq9, ls6, prc, tsp

Opinions on DCR and SCR

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1 2)

mamead on Mar 12, 2011

Mar 13, 2011 10:52 PM
by Higgs Boson

34

5,151

Generation III Internal Engine

My setup

sergio turbo on Mar 3, 2011

Mar 12, 2011 01:33 AM
by sergio turbo

7

878

Generation IV Internal Engine

108, 224, calculate, camshaft, camshafts, dcr, lobes, ls, ls1, xer

What is DCR of 224 108 +0 Cam on XER Lobes in Ls1?

dug on Feb 16, 2011

Feb 17, 2011 09:22 AM
by Sales2@Texas-speed

3

1,059

Generation III Internal Engine

231, 237, 25, 589, 595, calculate, calculating, cam, comp, dcr, duration, heads, lift, ls1, ls6, prc, properly, si5, stock

Help calculating DCR

Dragula on Feb 7, 2011

Feb 7, 2011 05:39 PM
by Dragula

5

1,159

Generation III Internal Engine

865, 87, 91, 92, 93, cam, camshaft, dcr, gas, limits, ls1, ls1tech, octane, pump, shaft

Is a DCR of 8.94 too much?

STAR on Dec 16, 2010

Dec 17, 2010 11:57 AM
by 1SLwLS1

10

1,303

Generation III Internal Engine

1101, 1151, 851, carb, compression, dangerous, dcr, gas, good, ls1, max, premium, ratio, scr, street

Compression ratio??

bugy on Dec 9, 2010

Dec 10, 2010 01:08 PM
by bugy

6

1,467

Generation III Internal Engine

1132, 222226, 224r, 241, cam, camshaft, dcr, eps, heads, ls1tech, power, torque

The Right Cam? EPS

hs70ss on Dec 3, 2010

Dec 5, 2010 03:34 PM
by 01ssreda4

15

1,994

Generation III Internal Engine

93, commpression, compresion, compression, dcr, dynamic, engine, good, ls1, needed, octane, ratio, ration, safe, whats

Safe compression ratio for 93 octane

redbird555 on Oct 23, 2010

Oct 23, 2010 09:10 AM
by slt200mph

9

8,097

Generation III Internal Engine

430, calculate, calculator, crank, cranking, dcr, determine, difference, dynamic, info, lincoln, pressure, static, vs, whatisdynamiccrankingpressure

help me understand dynamic cranking pressure

merim123 on Oct 7, 2010

Oct 7, 2010 10:22 PM
by merim123

5

3,010

LT1-LT4 Modifications

2005, angle, atdc, btdc, cam, center, custom, dcr, events, l76, l92, lobe, ls2, optimal, spec, torque, valve

L92 Cam

DWillTA on Sep 22, 2010

Sep 28, 2010 01:03 PM
by LS6

10

1,756

Generation IV Internal Engine

111, 251259, 660663, cam, camshaft, centerline, clip, dcr, intake, ls1, lsa, makes, power, scrdcr, sound

help with DCR? and SCR

douwannarace on Jul 9, 2010

Aug 1, 2010 10:56 AM
by Tunink

12

1,371

Generation IV Internal Engine

1041, 118, 347, 91, 91octane, compression, cr, dcr, highest, kind, ls1, ls1tech, needed, octain, octaine, octane

Highest CR on 91 octane

bp944 on Jul 18, 2010

Jul 22, 2010 11:21 AM
by jmm98LS1

10

2,137

Generation III Internal Engine

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