To learn a bit more about head choices for 493 to 540 STREET strokers, please post 1cubic inch 2head used 3Dyno torque down low, preferably from 2500 to 4000? 4work done on heads, compression ratio
Going to be difficult to get correct numbers if they are chassis dyno numbers with a good converter. Not a whole lot of engine dyno runs are correctly logged from 2500 either. Curious what shows up here though...
"use it 'till it breaks, replace as needed"
Re: Big block stroker, please post your low rpm torque!
[Re: gregsdart]
#2765412 04/18/2010:38 AM04/18/2010:38 AM
Greg I can't give you a dyno number but can give an et. 1) 512 2) Edelbrock Performer 3) 7.02 in the 1/8 shift at 5500 in a 4150lb car 4)better valve job and minor bowl clean up, 11.5 comp
Ok
Re: Big block stroker, please post your low rpm torque!
[Re: cudatom]
#2765458 04/18/2011:50 AM04/18/2011:50 AM
Going to be difficult to get correct numbers if they are chassis dyno numbers with a good converter. Not a whole lot of engine dyno runs are correctly logged from 2500 either. Curious what shows up here though...
I agree it will be tough. But hopefully there will be enough info for making choices to fit various budgets and goals.
505, 10:1, RPM heads with valve job and bowl blend, original Torker, 850vs, 1-7/8” headers, small HFT cam. Started pull at 3200........ 592ft/lbs. Peak tq @4000....... 628ft/lbs.
Most of the stuff is run with an auto trans, and there isn’t much point in pulling the motor way down below what the converter would stall at........ so it’s pretty rare I’d pull one down to 3000 or lower.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
Re: Big block stroker, please post your low rpm torque!
[Re: fast68plymouth]
#2765519 04/18/2002:38 PM04/18/2002:38 PM
498 rb stroker Comp ratio is 10,5 and runs great with europe 95 octane pump gas Edelbrock rpm slightly ported valve seat work from out of the box Cam flat tapper hydralic dur @.050 242 246
On rear tires at 2800 rpm 650nm and 3900 rpm 714nm on a 4 speed trans.
Last edited by Mopar Guy; 04/18/2002:40 PM.
Re: Big block stroker, please post your low rpm torque!
[Re: Mopar Guy]
#2765610 04/18/2006:55 PM04/18/2006:55 PM
My 493 with a 440Source 4.15 stroker kit Indy EZ heads 10.6 comp Good quench as I drive and race it on 92 pump Never dyno'd but has run a best of 10.76 @ 125 in my 63 Sport Fury that's 3700 lbs without me. Ron
Re: Big block stroker, please post your low rpm torque!
[Re: 383man]
#2766242 04/20/2011:11 AM04/20/2011:11 AM
My 493 with a 440Source 4.15 stroker kit Indy EZ heads 10.6 comp Good quench as I drive and race it on 92 pump Never dyno'd but has run a best of 10.76 @ 125 in my 63 Sport Fury that's 3700 lbs without me. Ron
616fwhp
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
Re: Big block stroker, please post your low rpm torque!
[Re: rb446]
#2766280 04/20/2012:15 PM04/20/2012:15 PM
To learn a bit more about head choices for 493 to 540 STREET strokers, please post 1cubic inch 2head used 3Dyno torque down low, preferably from 2500 to 4000? 4work done on heads, compression ratio
I see the big inch engines posted so here is one a little smaller .
470 cu Edelbrock RPM heads . Port matched to RPM intake some minor port work and a comp valve job. 10.72 to one good quench.
Mark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
Re: Big block stroker, please post your low rpm torque!
[Re: Hemi Allstate]
#2766395 04/20/2005:22 PM04/20/2005:22 PM
I don't have the dyno sheets anymore, they went with the car, my first pump gas 511 C.I.400 block stroker motor with a set of 906 iron heads with 2.14 intake and 1.81 exhaust valves and mild porting, they flowed 266 CFM at .700 valve opening on a S/F 600 bench. It had 9.25 to 1 compression ration and low deck eddy six pack dual plane intake with 440 six pack carbs, it made over 400 Ft lb. at 2500 RPM and over 500 Ft' lb, at 3100 RPM and then went over 600 Ft lbs. from there until it made peak torque at 4500 RPM at 644 Ft. Lb. Peak HP was 612 HP at 5500 RPM but that stupid motpr would run faster shifting it at or above 7000 RPM . I have notice on the pump gas motors I dyno tested, stock stroke or strokers, that had less than 10.5 to 1 compression that hey would make more torque than HP, once the compression goes above that they make more HP than torque I'll look in the shop tomorrow morning and see if I can find some more recent dyno sheets
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Big block stroker, please post your low rpm torque!
[Re: Cab_Burge]
#2766780 04/21/2003:03 PM04/21/2003:03 PM
My Mega 496 has 12.5 compression, I know a little steep. But w/Bullet custom hydraulic cam & Performer RPM heads, dual plane Performer RPM intake & only a 750dbl pumper made 581hp @ 5400 624tq @ 4300 Sorry cheated, used this on 2 posts Ken