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RPM for stroker smallblock
#1429477
05/03/13 01:48 AM
05/03/13 01:48 AM
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Joined: May 2013
Posts: 35
Pismo Beach California
Green416
OP
member
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OP
member
Joined: May 2013
Posts: 35
Pismo Beach California
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Hey guys,havent posted in a few years but trying to get back to the track and thought id pick your brains for some knowledge.Im running a W-5 stroker 416 based on a '68 340 block,3/4 fill,bottom end girdle,14.1 compression and a 712 lift Bullet roller with a Pro Systems 1070 on top of a Indy 360-1.My question is can anybody with a comparable combo tell me what they shift at,or a safe rpm this engine can turn?I've only had it to the track twice with this combo and have been shifting at 7600.It pulls hard all the way and revs to that quickly.I've been reading a lot of post from people saying they only turn theirs 6000 give or take,and if I don't need to turn it that high then its a waste.Any thoughts,and thank you in advance.Sorry so long winded. 
1972 Duster W-5 416 10.22@133
1970 Cuda stuck in the 80's Pro Street
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Re: RPM for stroker smallblock
[Re: Green416]
#1429478
05/03/13 02:10 AM
05/03/13 02:10 AM
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Joined: Feb 2011
Posts: 1,454
Glendora Ca.
Just-a-dart
pro stock
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pro stock
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
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You will have to test to find out. I would put down a baseline pass then try 200 less/more at a time and see. Take notes and run where it's happy.
"Just a Bracket car dressed up like a streetcar"
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Re: RPM for stroker smallblock
[Re: Just-a-dart]
#1429480
05/03/13 02:33 AM
05/03/13 02:33 AM
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Joined: May 2013
Posts: 35
Pismo Beach California
Green416
OP
member
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OP
member
Joined: May 2013
Posts: 35
Pismo Beach California
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Thanks guys.I'll try to give it a shot.I only have a few tracks remotely near me,thats why its so hard to make any practice runs.Im going to try to get to Irwindale(3.5hrs)maybe this next month.Just seems I never get enough trys to figure it out at the test-N-tunes.Last time at bakersfield I ran a 10.22@133 shifting at the 7600 mark,but I was running a 850 demon,stock trans with a 3000 converter.i stepped up the trans and stall,and put the 1070 on hoping I could dip into the 9's.If I could even run the same as before at lower R's it would have to live longer im assuming.Trial and error it is I guess.Thanks again.
1972 Duster W-5 416 10.22@133
1970 Cuda stuck in the 80's Pro Street
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Re: RPM for stroker smallblock
[Re: Green416]
#1429481
05/03/13 06:15 AM
05/03/13 06:15 AM
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Joined: Feb 2005
Posts: 20,203
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,203
PA.
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You have a lot more engine than I have but I tried 6800 last year and then 6400 and it went faster at 6400. 4 passes last weekend it ran 10.12-10.18 but shes deed from 1000 foot to the finish. Small cam (550), small carb (750), and a real fast port job on a set of Edelbrocks (280 range). 4:88 gear are not helping the situation either.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: RPM for stroker smallblock
[Re: Just-a-dart]
#1429483
05/03/13 11:20 AM
05/03/13 11:20 AM
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Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
jim sciortino
top fuel
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top fuel
Joined: Apr 2007
Posts: 2,028
Trumbull,CT.
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When testing shift points, remember that converter flash and gear ratios need to be optimized......
An expensive proposition, as merely dragging a shift higher, or short shifting lower does NOT tell the whole story.
For example......
Extend 1st and 2nd gear shifts by say 500rpm and what happens to high gear???
To get close, it's easier to dyno an engine to find how long it holds on after peak hp and decide if it's worth the maintenence to gear and shift the engine for maximum acceleration......if your valvetrain is stable enough.
Many of the quickest cars, shift past peak hp and cross well past peak hp as long as the engine doesn't fall like a rock after peak.
Converter, gear, USABLE RPM and shift recovery accelerate a racecar.
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Re: RPM for stroker smallblock
[Re: Green416]
#1429484
05/03/13 11:24 AM
05/03/13 11:24 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Hey guys,havent posted in a few years but trying to get back to the track and thought id pick your brains for some knowledge.Im running a W-5 stroker 416 based on a '68 340 block,3/4 fill,bottom end girdle,14.1 compression and a 712 lift Bullet roller with a Pro Systems 1070 on top of a Indy 360-1.My question is can anybody with a comparable combo tell me what they shift at,or a safe rpm this engine can turn?I've only had it to the track twice with this combo and have been shifting at 7600.It pulls hard all the way and revs to that quickly.I've been reading a lot of post from people saying they only turn theirs 6000 give or take,and if I don't need to turn it that high then its a waste.Any thoughts,and thank you in advance.Sorry so long winded.
I had my W-5 416 on the dyno and it made peak at
6600 rpm BUT I think it was the valve springs were
starting to bounce so it should go higher.. you have
more lift than I have so that should help you...
My w-9 405 I shift at 8000 and trap at 8200 ...
a bit of testing will tell you on your combo... if
your engine is built for RPM it will make more power
at higher rpm
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Re: RPM for stroker smallblock
[Re: MR_P_BODY]
#1429485
05/03/13 11:51 AM
05/03/13 11:51 AM
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Joined: Dec 2009
Posts: 20,678
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,678
in a cattle trailer down by th...
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Mine is nearly the same combo with 2, 750's on a TR. I shift mine at 7000 mainly because I can only get a pro gear for the 8.75 in a 4.86 ratio. So I'm stuck there pretty much.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: RPM for stroker smallblock
[Re: Guitar Jones]
#1429486
05/03/13 12:01 PM
05/03/13 12:01 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Mine is nearly the same combo with 2, 750's on a TR. I shift mine at 7000 mainly because I can only get a pro gear for the 8.75 in a 4.86 ratio. So I'm stuck there pretty much.
If I recall your car is pretty lite so you dont need
the pro gear... I have always ran a street gear and
it hasnt been a problem
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Re: RPM for stroker smallblock
[Re: MR_P_BODY]
#1429487
05/03/13 01:41 PM
05/03/13 01:41 PM
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Joined: Dec 2009
Posts: 20,678
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,678
in a cattle trailer down by th...
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Quote:
Quote:
Mine is nearly the same combo with 2, 750's on a TR. I shift mine at 7000 mainly because I can only get a pro gear for the 8.75 in a 4.86 ratio. So I'm stuck there pretty much.
If I recall your car is pretty lite so you dont need
the pro gear... I have always ran a street gear and
it hasnt been a problem
About 2750 with me in it.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: RPM for stroker smallblock
[Re: Guitar Jones]
#1429488
05/03/13 02:13 PM
05/03/13 02:13 PM
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Joined: Jan 2003
Posts: 11,729
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,729
Portage,michigan
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Its going to be pretty near impossible for a 4 inch motor to make peak horsepower with W5 heads at more than 7000 rpm, likely a hair lower will be where peak horsepower is. It just isnt a big head for that size motor. Mine was beginning to fall off a good bit at about the 7400 it crossed the line at.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, low 10.30’s 1/4
1.41 best 60 foot
6.56 at 104.17
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Re: RPM for stroker smallblock
[Re: MR_P_BODY]
#1429490
05/03/13 02:25 PM
05/03/13 02:25 PM
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Joined: May 2013
Posts: 35
Pismo Beach California
Green416
OP
member
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OP
member
Joined: May 2013
Posts: 35
Pismo Beach California
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All good points  .I think one of my biggest worries is the block failing at that rpm.My car is 3100 lbs with me in it,and has 4:30's.Im really considering going to pump gas compression though because I'm worried between that compression and rpm that a stock block might not like it.Wish I would have sprung for an R-3.Not in the budget though.Looks like you guys all have nicely sorted combos.Wish I was running 9's on pump gas lol.I'll try to make it to Irwindale and see if I can do some back to back comparisons.  Thanks for the input everyone.
1972 Duster W-5 416 10.22@133
1970 Cuda stuck in the 80's Pro Street
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Re: RPM for stroker smallblock
[Re: DavidDean]
#1429492
05/03/13 03:51 PM
05/03/13 03:51 PM
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Joined: May 2013
Posts: 35
Pismo Beach California
Green416
OP
member
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OP
member
Joined: May 2013
Posts: 35
Pismo Beach California
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Wow!Whats your combo if you don't mind me asking?Thats awesome.So is it possible i could pick up some e.t. if i shifted lower?Like I said it FEELS like its pulling to there,but there's every chance it's not  .And the heads aren't anything compared to newer stuff.I did have SD do the heads awhile back,and they did an amazing job,especially in a before and after comparison.I forget all the #'s.I know they flowed 326/233 @'700.I think I'm tapped as far as funds on this so it would be great to pick up some time and have it last me for awhile.
1972 Duster W-5 416 10.22@133
1970 Cuda stuck in the 80's Pro Street
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Re: RPM for stroker smallblock
[Re: Green416]
#1429496
05/03/13 05:54 PM
05/03/13 05:54 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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You will never know if you pick up ET or not without testing YOUR set up... you can ask all you want from guys on the internet and its NEVER the same as yours.. even if its a weight difference... test your own stuff and document each and every change and 1 item at a time
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haha.Very nice.