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Re: Street hemi build to stroke or not to stroke
[Re: DaveRS23]
#3197168
12/13/23 12:21 PM
12/13/23 12:21 PM
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Joined: Jan 2003
Posts: 20,754
A collage of whims
topside
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,754
A collage of whims
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Ahh - the old "while I'm in there" temptation...
Mine - stock stroke but biggish cam, headers, MSD, ported heads - made 540 @ 6,000 and was going up from there.
It'd blow off its Radial T/As (295/50R15) until 3rd gear ('68 RR, 4-speed, 4.10s), but M&H DOTs helped.
If you just drive the car, and it doesn't need a crank or re-configuring and the other decisions that come with that, it's still the most awesome American engine ever.
But if you want a religious experience, and have a wide-open place to enjoy it, step it up.
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Re: Street hemi build to stroke or not to stroke
[Re: topside]
#3197171
12/13/23 12:31 PM
12/13/23 12:31 PM
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Joined: Jan 2004
Posts: 4,564
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,564
Motor City
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I drive my 528" Hemi whenever I get a chance all over on the street. Fuel mileage is not as good as stock though.... lol.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197172
12/13/23 12:32 PM
12/13/23 12:32 PM
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Joined: Jan 2003
Posts: 17,841
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,841
S.E. Michigan
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For normal driving only with a romp once in a while and if you already have all good enough parts for std stroke?
I wouldn't.
If you need all new internals anyway, a little extra displacement can help offset the big ports and valves and give it a little more low speed snap.
I went mild 572 on the one I built for the GTX, but have a more street/strip mindset for it and started with nothing, and while I do care what numbers the car puts out, at the same time I have to admit the hemi is just as much for cool factor as anything else.
Have tentative plans for another one that is a cruiser, and there's no reason to increase the displacement at all.
Rich H.
Esse Quam Videri
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197179
12/13/23 01:08 PM
12/13/23 01:08 PM
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Joined: Aug 2003
Posts: 43,127
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,127
Bend,OR USA
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If you want to have us justify what you want, thank about that.  You go around once in life, you could do that now or maybe do it later, it is your choice. My thinking is do you want to take a chance of not doing it now and regretting that decision later  I like power in my race cars, I have built many different street and srip cars as well as street only and drag race only, My last race only car ran 8.86 at 150.+ MPH in the 1/4 mile and 5.50 at 125 MPH in the1/8 mile weighing 2850 Lbs. with me in it   My next race only car, heads up no prep, hopefully will run in the low 4 at 170+ MPH in the 1/8 mile on E85 with a B1 motor and or NOS and a centrifugal supercharger with the motor making close to 2700 HP   I have been blessed in my life to be able to do that, thanks be to God   Good luck on your decision either way
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197190
12/13/23 01:41 PM
12/13/23 01:41 PM
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Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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For what you're doing...I'd stay w/ the stock crank. A little more cam and tweaking in other areas will make more than enough power.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Street hemi build to stroke or not to stroke
[Re: DaveRS23]
#3197214
12/13/23 02:26 PM
12/13/23 02:26 PM
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Joined: Jun 2003
Posts: 21,405
It's a dry heat
gtx6970
OP
Too Many Posts
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OP
Too Many Posts
Joined: Jun 2003
Posts: 21,405
It's a dry heat
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When you already have the head flow, why not have the displacement to go with it?  But again, Unless its a race car ,,,even if just sometimes. WHY ? If I was starting with an empty block I could be persuaded pretty easily. But the bottom end in mine already has a Kellogg crank in it that I have to believe is just fine for when / If the time comes I pull it down. Yet the few builders Ive talked to the 1st thing they mention is Stroke it up. And that appears to add aprrox $3000 to the bill My only reason I would pull it down is to lower compression to make it more pump gas friendly, and correct some oil usage. But still even if we take my car out of the equation . And its YOUR car ,,,again you dont race the car. Say you're starting with an empty block , Why the expense to stroke it UNLESS its a part time drag car . And Im not thinking a car you take down the strip at the Mopar Nats once a year. But something you race several times a year. Whats the point ? Besides bragging rights??? And again taking my car and its use out of the equation. If you did it, Why ? If you didnt , do you wish you had and why? One of the reasons I bring it up. Is a friend of mine up in Phoenix is having the engine for his 66 Hemi Satellite , 4spd with the stock 3.54 dana out being done right now. And the builder asked,,, Almost pushed him to stroke it . But he didnt. Although He is upgrading it to a roller cam and headers though. this guy is an old SCCA racer so I can see his car making a few passes from time to time just for grins.
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197215
12/13/23 02:26 PM
12/13/23 02:26 PM
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Joined: Dec 2005
Posts: 4,231
State of retirement
52savoy
master
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master
Joined: Dec 2005
Posts: 4,231
State of retirement
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That is the question
I don't race it .... Hardly beat on it outside of the occasional burst when i get the urge.
So....unless it's a race car ....what's the point?
I can understand if it needs a crank or something.
Outside of that....why??
Would like to hear pros and cons either way! There is very good horsepower in a stock stroke Hemi. Chrysler killed hp when they were detuned for street cars . If it was me I would build a stock stroke with no less 10.5 cr and a solid roller or solid lifter cam and a new Edelbrock 2X4 intake. Old grinds work well on the street. Built one last year with a Isky 550 roller and it's very streetable. And this picture was taken before I finished the carbs. I removed every bit of the choke and linkages and it's starts immediately..
Last edited by 52savoy; 12/13/23 02:31 PM.
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Re: Street hemi build to stroke or not to stroke
[Re: an8sec70cuda]
#3197221
12/13/23 02:42 PM
12/13/23 02:42 PM
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Joined: Jun 2003
Posts: 21,405
It's a dry heat
gtx6970
OP
Too Many Posts
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OP
Too Many Posts
Joined: Jun 2003
Posts: 21,405
It's a dry heat
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For what you're doing...I'd stay w/ the stock crank. A little more cam and tweaking in other areas will make more than enough power. Mine is .020 over, but had 12.5 pistons in it that have been milled down a tad , builder thinks its in the 11.2 - 11.5 range ( keep in mind this car has been done 20 years ) I have the cam card ,,,around here somewhere and best I remember its just a tad over .500 lift .( its solid lift btw ) Otherwise box stock , still running stock heads, valve gear , exhaust manifolds and stock exhaust. etc etc Im toying with the idea to change the mufflers to something with a little more growl so to speak and thinking up the full system to a 2.5inch end to end while Im at it. I dont want to go to 3inch for fear of clearance issues in the back ( I HATE squeeks + rattles ) And if I pull it down for a piston change . Im may upgrade the cam to get away from yearly cam adjustments and give it a little rumble when pulling into cruises. I bought the car primarily due to the color combination. The hemi was just an added bonus. And is PRIMARILY eye candy to the masses, AKA an ego boost for me. As its been a VERY LONG time since Ive owned a hemi car Ill be honest,. Ive owned it 3 years and to date have still NOT really flat laid into it .
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197247
12/13/23 03:58 PM
12/13/23 03:58 PM
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Joined: Jan 2005
Posts: 4,405
Michigan
MarkZ
Worthy
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Worthy
Joined: Jan 2005
Posts: 4,405
Michigan
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That is the question
I don't race it .... Hardly beat on it outside of the occasional burst when i get the urge.
So....unless it's a race car ....what's the point?
I can understand if it needs a crank or something.
Outside of that....why??
Would like to hear pros and cons either way! Off idle torque with a broad flat curve and not having to wind it up to make power. The manors of a stroked motor are the chef's kiss for a street machine. Even putting around at part throttle the response makes it a pleasure to drive.
Last edited by MarkZ; 12/13/23 03:59 PM.
1987 Fifth Avenue - 512/518/D60
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197255
12/13/23 04:29 PM
12/13/23 04:29 PM
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Joined: Jan 2003
Posts: 74,978
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,978
U.S.S.A.
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When you already have the head flow, why not have the displacement to go with it? But again, Unless its a race car ,,,even if just sometimes. WHY ? If I was starting with an empty block I could be persuaded pretty easily. But the bottom end in mine already has a Kellogg crank in it that I have to believe is just fine for when / If the time comes I pull it down. Yet the few builders Ive talked to the 1st thing they mention is Stroke it up. And that appears to add aprrox $3000 to the bill My only reason I would pull it down is to lower compression to make it more pump gas friendly, and correct some oil usage. But still even if we take my car out of the equation . And its YOUR car ,,,again you dont race the car. Say you're starting with an empty block , Why the expense to stroke it UNLESS its a part time drag car . And Im not thinking a car you take down the strip at the Mopar Nats once a year. But something you race several times a year. Whats the point ? Besides bragging rights??? And again taking my car and its use out of the equation. If you did it, Why ? If you didnt , do you wish you had and why? One of the reasons I bring it up. Is a friend of mine up in Phoenix is having the engine for his 66 Hemi Satellite , 4spd with the stock 3.54 dana out being done right now. And the builder asked,,, Almost pushed him to stroke it . But he didnt. Although He is upgrading it to a roller cam and headers though. this guy is an old SCCA racer so I can see his car making a few passes from time to time just for grins. If starting with an empty block and you have to buy everything it costs the same to build a stroker as it would stock displacement , but if you have everything already and it's all good and useable it doesn't make sense unless you are chasing a goal that a stockish 426 wouldn't meet. I have a crate 426 circa 2005 that I have been resisting the urge to stroke out, it could use a piston change but at 9.0 it's a pump gas friendly combo that will have more than enough more to wreck a set of tires in short order
running up my post count some more .
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Re: Street hemi build to stroke or not to stroke
[Re: JohnRR]
#3197315
12/13/23 07:55 PM
12/13/23 07:55 PM
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Joined: Jun 2003
Posts: 21,405
It's a dry heat
gtx6970
OP
Too Many Posts
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OP
Too Many Posts
Joined: Jun 2003
Posts: 21,405
It's a dry heat
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When you already have the head flow, why not have the displacement to go with it? But again, Unless its a race car ,,,even if just sometimes. WHY ? If I was starting with an empty block I could be persuaded pretty easily. But the bottom end in mine already has a Kellogg crank in it that I have to believe is just fine for when / If the time comes I pull it down. Yet the few builders Ive talked to the 1st thing they mention is Stroke it up. And that appears to add aprrox $3000 to the bill My only reason I would pull it down is to lower compression to make it more pump gas friendly, and correct some oil usage. But still even if we take my car out of the equation . And its YOUR car ,,,again you dont race the car. Say you're starting with an empty block , Why the expense to stroke it UNLESS its a part time drag car . And Im not thinking a car you take down the strip at the Mopar Nats once a year. But something you race several times a year. Whats the point ? Besides bragging rights??? And again taking my car and its use out of the equation. If you did it, Why ? If you didnt , do you wish you had and why? One of the reasons I bring it up. Is a friend of mine up in Phoenix is having the engine for his 66 Hemi Satellite , 4spd with the stock 3.54 dana out being done right now. And the builder asked,,, Almost pushed him to stroke it . But he didnt. Although He is upgrading it to a roller cam and headers though. this guy is an old SCCA racer so I can see his car making a few passes from time to time just for grins. If starting with an empty block and you have to buy everything it costs the same to build a stroker as it would stock displacement , but if you have everything already and it's all good and useable it doesn't make sense unless you are chasing a goal that a stockish 426 wouldn't meet. I have a crate 426 circa 2005 that I have been resisting the urge to stroke out, it could use a piston change but at 9.0 it's a pump gas friendly combo that will have more than enough more to wreck a set of tires in short order Ive been told a stroker and a 9ish to one compression is very nice for a pump gas street car . Now whether there is any truth to that I cant answer
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197318
12/13/23 08:14 PM
12/13/23 08:14 PM
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Joined: Jan 2003
Posts: 12,036
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,036
Benton, IL.
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The torque and off idle response of a big inch Hemi along with the top end pull is the best combo on the planet!
But, as you have added information and again mentioned that you don't want to romp on it, then you might just as well stay at 426. For most cars, there is no traction with a big inch Hemi until 50MPH anyway.
FYI: Barton spec'd my 540 with 10.25 compression. Does fine on 91 octane.
So:
Pros; added torque and throttle response in a street car
Cons; more money, additional traction issues
Master, again and still
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Re: Street hemi build to stroke or not to stroke
[Re: gtx6970]
#3197326
12/13/23 08:45 PM
12/13/23 08:45 PM
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Joined: May 2019
Posts: 712
Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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I would start with a goal. What kind of power and where, then decide if stock stroke will match the goal.
I kept mine stock stroke. Makes peak power (and carries it) at rather high rpm which I find a lot of fun and matches my driving style.
Seems most prefer more lower rpm/midrange power and if that's so probably better to up the cubes.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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