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where do u shift your big block?? #480717
09/26/09 11:48 PM
09/26/09 11:48 PM
Joined: Oct 2007
Posts: 846
Illinois
moparmattkos Offline OP
mopar addict
moparmattkos  Offline OP
mopar addict

Joined: Oct 2007
Posts: 846
Illinois
I have a 451 stroker what kinda rpms do these like the most with a solid flat tappet cam? I am shifting at 6200 now and a few people say the 451 pulls the best it like 7200 any thoughts on this?


www.sikosracing.net Heads up Drag racing
Re: where do u shift your big block?? [Re: moparmattkos] #480718
09/27/09 12:16 AM
09/27/09 12:16 AM
Joined: Nov 2005
Posts: 656
Kokomo, IN
540dust Offline
mopar
540dust  Offline
mopar

Joined: Nov 2005
Posts: 656
Kokomo, IN
6800 here

Re: where do u shift your big block?? [Re: 540dust] #480719
09/27/09 12:19 AM
09/27/09 12:19 AM
Joined: Aug 2006
Posts: 416
Eagleville Tn.
rtstreet Offline
mopar
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mopar

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Posts: 416
Eagleville Tn.
depends on set up, back in the ezstreet days i ran lots spring pressure and about 700 lift, shifted at 7600 on lots of nos (cross bar with two 85 nos and two 82 fuel).

Re: where do u shift your big block?? [Re: rtstreet] #480720
09/27/09 12:41 AM
09/27/09 12:41 AM
Joined: Jan 2003
Posts: 19,366
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
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Las Vegas
8200:p Well that is where we shift the Cuda but it is a 525"er

FWIW my ole 451 in the Belvedere worked best at 6700. Steel rod SR head ran mid 10's at 3770lbs with a Scott Brown cam.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: where do u shift your big block?? [Re: moparmattkos] #480721
09/27/09 12:45 AM
09/27/09 12:45 AM
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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goldmember Offline
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goldmember  Offline
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Posts: 4,501
Gainesville,FL
10,500? You really don't offer enough info to possibly help you,what do you want? A lucky guess?

Re: where do u shift your big block?? [Re: goldmember] #480722
09/27/09 12:51 AM
09/27/09 12:51 AM
Joined: Aug 2005
Posts: 4,101
Yes
S
sixpakdodge Offline
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sixpakdodge  Offline
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Joined: Aug 2005
Posts: 4,101
Yes
My 452 liked 6600.

Re: where do u shift your big block?? [Re: sixpakdodge] #480723
09/27/09 01:27 AM
09/27/09 01:27 AM
Joined: Apr 2007
Posts: 325
Greenville, WI
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Big B Offline
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Big B  Offline
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Joined: Apr 2007
Posts: 325
Greenville, WI

6800 here too

Re: where do u shift your big block?? [Re: moparmattkos] #480724
09/27/09 01:54 AM
09/27/09 01:54 AM
Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger Offline
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Posts: 2,825
Sk. Canada
Quote:

I have a 451 stroker what kinda rpms do these like the most with a solid flat tappet cam? I am shifting at 6200 now and a few people say the 451 pulls the best it like 7200 any thoughts on this?


Either you got a real small cam, or you're sandbagging......

Re: where do u shift your big block?? [Re: moparmattkos] #480725
09/27/09 09:03 AM
09/27/09 09:03 AM
Joined: Jan 2003
Posts: 16,925
NC
440Jim Offline
I Live Here
440Jim  Offline
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Posts: 16,925
NC
Quote:

I have a 451 stroker what kinda rpms do these like the most with a solid flat tappet cam?


The key part of that is solid flat tappet cam. Although with extreme setups it can rpm sky high, most valvetrain setups will need attention over 7000 rpm. And between 6500 and 7000 valve spring surge can be an issue unless you take some steps to avoid it. With a few tricks you can go 7500, but the spring pressures risk wearing/wiping a lobe, unless you use ceramic faced lifters (Schubeck style)

Ofcourse, your head flow, cam duration, etc. all play a role on what to shift your engine at.


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: where do u shift your big block?? [Re: 440Jim] #480726
09/27/09 09:41 AM
09/27/09 09:41 AM
Joined: Jan 2003
Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
I Live Here
gregsdart  Offline
I Live Here

Joined: Jan 2003
Posts: 10,000
Frostbitefalls MN (Rocky&Bullw...
More engine/trans info needed to help figure out a starting shift point for your specific combo.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: where do u shift your big block?? [Re: moparmattkos] #480727
09/27/09 10:36 AM
09/27/09 10:36 AM
Joined: Aug 2003
Posts: 2,792
IN
Dartman928 Offline
master
Dartman928  Offline
master

Joined: Aug 2003
Posts: 2,792
IN
5800rpm runs 9.7's

Re: where do u shift your big block?? [Re: Dartman928] #480728
09/27/09 10:52 AM
09/27/09 10:52 AM
Joined: Aug 2007
Posts: 316
Ohio
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Lil Wedge Offline
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Lil Wedge  Offline
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Joined: Aug 2007
Posts: 316
Ohio
A guy we was pitted with at Norwalk had 500 cid in a Demon and he had bought the engine already together out of a dragster, Indy heads and intake , roller cam, dominator carb, He was told by original owner shift at 7500, He was conservative and was shifting at 6800 and was running 9.95. wanted to slow down for 10.0 shootout so backed it down to 6000 and car went 9.90, backed it down to 5500 and car went 9.84. Decided if He was going to slow down this way, He was going to have to shift at 7000,lol

Re: where do u shift your big block?? [Re: moparmattkos] #480729
09/27/09 12:52 PM
09/27/09 12:52 PM
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
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Joined: Aug 2003
Posts: 43,190
Bend,OR USA
I have ran a lot of different BB combinations, the 451 is a 440 stock stroke crankshaft in a low deck, it is the same as a 440 with .060 overbore. I ran one of those with a set of M.W. heads, intake and 750 carbs, we could slow that car down a tenth by moving the shift points in 1st and 2nd gear from 6400 RP to 7000 RPM. That was with a Isky 616-590 grind with all Isky valve train parts with the springs set up the way they wanted them My point is you will have to take the car out and try different shift points to find out what works best in your combination Converter, car weight, rear gear and trans ratio, tire size and so on all play a part on what works best on shift points BTW, I shift my 518 low deck pump gas stroker at 7300 for the best ETs

Last edited by Cab_Burge; 09/27/09 06:18 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: where do u shift your big block?? [Re: moparmattkos] #480730
09/27/09 02:03 PM
09/27/09 02:03 PM
Joined: Jan 2003
Posts: 2,511
Tampa , Fl
MoparJoe Offline
super gas
MoparJoe  Offline
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Joined: Jan 2003
Posts: 2,511
Tampa , Fl
It depends on heads/cam/gear/shift recovery etc every combo it a different - A 400 with MW heads, roller and 5.38's like 8200-8400.

Re: where do u shift your big block?? [Re: MoparJoe] #480731
09/27/09 06:29 PM
09/27/09 06:29 PM
Joined: May 2008
Posts: 902
Mopar Lane,Mississippi
6
67HEMI Offline
super stock
67HEMI  Offline
super stock
6

Joined: May 2008
Posts: 902
Mopar Lane,Mississippi
I shift my 501 at 6500 and cross at 6800 with lil ez 295's. My head and cam combo are easy on springs and parts and makes good torque. Best of a 10.22 @ 129 in a 3800 pound sled.


'33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins
Re: where do u shift your big block?? [Re: 67HEMI] #480732
09/27/09 06:43 PM
09/27/09 06:43 PM
Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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blownzoom440 Offline
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ELYRIA,OH
i was shifting at 6800 but after the bigger carbs i am trying 6500.it works pritty well so far.i just need the 60' to stick.

Re: where do u shift your big block?? [Re: blownzoom440] #480733
09/27/09 07:07 PM
09/27/09 07:07 PM
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer Offline
master
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master

Joined: Nov 2003
Posts: 6,293
Rock Springs
557" aluminum wedge .800 cam 15:1 compression on alky. launch at 6K and shift at 7400-7500 rpms.


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
Re: where do u shift your big block?? [Re: moparmattkos] #480734
09/27/09 07:10 PM
09/27/09 07:10 PM
Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
B
blownzoom440 Offline
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ELYRIA,OH
Quote:

I have a 451 stroker what kinda rpms do these like the most with a solid flat tappet cam? I am shifting at 6200 now and a few people say the 451 pulls the best it like 7200 any thoughts on this?



maybe advance the cam 4*

Re: where do u shift your big block?? [Re: moparmattkos] #480735
09/27/09 08:24 PM
09/27/09 08:24 PM
Joined: Mar 2008
Posts: 1,596
BX, CT, FL.
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B1KILLER Offline
pro stock
B1KILLER  Offline
pro stock
B

Joined: Mar 2008
Posts: 1,596
BX, CT, FL.
499 B1 @ 7200 9.50 @ 137mph with 488 gears. crossing traps @ 7600 with a glide, car really pulls ontop

5509653-Frontofshop.jpg (43 downloads)
Last edited by B1KILLER; 09/27/09 08:27 PM.
Re: where do u shift your big block?? [Re: B1KILLER] #480736
09/27/09 11:35 PM
09/27/09 11:35 PM
Joined: Dec 2006
Posts: 4,647
aotearoa
rebel Offline
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aotearoa
512 indymaxx B engine with 4.88 gears. change gear @ 7k cross the line @ 7200 doing 9.5@139mph with TF.

5510087-Picture087.jpg (58 downloads)
Re: where do u shift your big block?? [Re: rebel] #480737
09/27/09 11:49 PM
09/27/09 11:49 PM
Joined: Feb 2006
Posts: 1,949
land of 10,000______'s
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BDS871Cuda Offline
top fuel
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top fuel
B

Joined: Feb 2006
Posts: 1,949
land of 10,000______'s
5900 RPM's


Snap your neck, mega G-force launch, is all I want!
Re: where do u shift your big block?? [Re: BDS871Cuda] #480738
09/27/09 11:55 PM
09/27/09 11:55 PM
Joined: Aug 2006
Posts: 1,613
Deerfield, Ohio
70dusterjohn Offline
top fuel
70dusterjohn  Offline
top fuel

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Posts: 1,613
Deerfield, Ohio
6800 rpm

Re: where do u shift your big block?? [Re: 70dusterjohn] #480739
09/28/09 12:01 AM
09/28/09 12:01 AM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
master
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Posts: 6,257
gulfport, ms, west mi
when the front tires come down in about 1 1/2 seconds. never look at the tach .



it's ok to butt heads, just don't do it with a butthead
Re: where do u shift your big block?? [Re: rowin4] #480740
09/28/09 12:09 AM
09/28/09 12:09 AM
Joined: Aug 2006
Posts: 416
Eagleville Tn.
rtstreet Offline
mopar
rtstreet  Offline
mopar

Joined: Aug 2006
Posts: 416
Eagleville Tn.
the 522 thats in it know i shift at 8500 and cross at about 8400 with the 456's

Re: where do u shift your big block?? [Re: rtstreet] #480741
09/28/09 12:59 AM
09/28/09 12:59 AM
Joined: Feb 2007
Posts: 347
north west, IN
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larry890 Offline
enthusiast
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Posts: 347
north west, IN
451 w/scott brown solid cam. I shift at 6500 through traps at 7000, 10.23 128mph.

Re: where do u shift your big block?? [Re: larry890] #480742
09/28/09 05:51 AM
09/28/09 05:51 AM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Online boogie
top fuel
Dartsport540  Online Boogie
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Posts: 1,646
Ringtown, Pa.
505 cu. in. Shift at 6300rpm, cross the stripe at 6900rpm. 9.48et at 140mph.


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: where do u shift your big block?? [Re: Dartsport540] #480743
09/28/09 07:32 AM
09/28/09 07:32 AM
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport Offline
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Akron, Ohio
451 in my previous car liked a 6300 shift and 6500 trap. It had Eddy heads and the 590 purpleshaft, ran high 9's.

Re: where do u shift your big block?? [Re: ProSport] #480744
09/28/09 08:04 AM
09/28/09 08:04 AM
Joined: Jan 2003
Posts: 1,369
Ohio
3404 Offline
pro stock
3404  Offline
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Posts: 1,369
Ohio
New 540 with glide likes 7400 shift and I go through at almost 7800. 2800# with me in it. 4:56 gear, thinking about dropping to a 4:30.

Re: where do u shift your big block?? [Re: moparmattkos] #480745
09/28/09 09:54 AM
09/28/09 09:54 AM
Joined: May 2003
Posts: 4,675
Ortonville, MI
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RoadRnnr69 Offline
Keyster
RoadRnnr69  Offline
Keyster
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Joined: May 2003
Posts: 4,675
Ortonville, MI
I shift my 496 at 6100

Re: where do u shift your big block?? [Re: RoadRnnr69] #480746
09/28/09 10:27 AM
09/28/09 10:27 AM
Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
Jacob Pitt Offline
master
Jacob Pitt  Offline
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Posts: 2,528
Mansfield, Tx
I shift my 499ci at 6700. This is with mw EZ-1 heads and a .640 roller. Runs low 6.0's in 1/8th.


2013 NHRA D4 Stock Champ
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All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837
Re: where do u shift your big block?? [Re: Jacob Pitt] #480747
09/28/09 01:19 PM
09/28/09 01:19 PM
Joined: Aug 2008
Posts: 156
Michigan, US
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ben1692 Offline
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Joined: Aug 2008
Posts: 156
Michigan, US
6800 1st to 2nd 7000 2nd to 3rd 7200 rev chip 572 cu all 440 source bottom end 440-1 heads 5.52 1/8 mile 8.80 1/4 mile

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