Re: stock block stroker big block how big do you like t
[Re: earthmover]
#942385
03/04/11 11:43 PM
03/04/11 11:43 PM
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Joined: Jan 2003
Posts: 5,765 Hot Rod Ridge
FastmOp
master
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master
Joined: Jan 2003
Posts: 5,765
Hot Rod Ridge
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There calling for rain . Plus I'm still building headers. Hope next weekend is warm and dry. But if it is I'll prolly take my SRT challenger. I really want a 7 sec timeslip out of it. Been 8.24 but I been messin with it . The valiant will be out by the end of march though. Earthmover with the parts you already have your going to have a stout combo. Stick something together and beat on it.
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Re: stock block stroker big block how big do you like t
[Re: earthmover]
#942388
03/05/11 12:28 AM
03/05/11 12:28 AM
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Joined: Jan 2003
Posts: 444 Seaside,Ca.
TC67CUDA
mopar
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mopar
Joined: Jan 2003
Posts: 444
Seaside,Ca.
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My combo: 77 440 RV block bored .060, 440 Source 4.15 crank and rods, Ross flat tops 12 to 1 compression,Indy SR Max wedge CNC ported, valve job by Scott Brown, Scott Brown solid flat tappet cam 272/280 @ .050 664/640 lift 1.6 rockers, Indy 440-2 ported intake, Pro Systems 1000 cfm 4150 carb, timing @ 38 degrees, 67 Barracuda back half ladder, 4.56 gears ,5100 stall Ultimate Converter, weight with me around 3400 lbs, shift at 6200, traps at 6500, Best so far 10.14 @ 135 Chassis Dyno @ 542 rwhp.
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Re: stock block stroker big block how big do you like them
[Re: earthmover]
#942393
03/05/11 10:31 AM
03/05/11 10:31 AM
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Joined: Jan 2003
Posts: 10,088 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,088
Frostbitefalls MN (Rocky&Bullw...
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Quote:
gregsdart please explain this center counter weight crank to me ..i have a idea of what your saying just never really heard of that..mike
also the big thing is i have -1 heads unported with 2.25 valve with a nice size cam [Email]280@50[/Email] and 731 with the rockers 1.6..
plan to hard block to bottom of water pump holes and cross bolt and girdle
The closer you have a counter weight to each pair of rods, the less stress goes through both the crank and block to offset the forces generated by the piston and rods going up and down. A crank with weights out at the ends only will smooth out vibrations, but the forces are not in line with each other. Fuelers use them, the Ford mod motors use them, to name two. Most believe that the upper limit for Hp in a well done low deck is in the 800 hp area. Anything you can do to even out things and reduce reciprocating weight is going to help a lot. The cam sounds like it will make power up to about 6800 rpm. I shifted my deal at 6800 with a 283/290 @ .050 cam with .717 lift.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: stock block stroker big block how big do you like them
[Re: gregsdart]
#942394
03/05/11 11:35 AM
03/05/11 11:35 AM
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Joined: Aug 2007
Posts: 2,449 nc
earthmover
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,449
nc
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Re: stock block stroker big block how big do you like them
[Re: earthmover]
#942395
03/05/11 12:18 PM
03/05/11 12:18 PM
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,924
Weddington, N.C.
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There was a guy on a few weeks ago that built a bracket stroker that had a really conservative cam in it, but it was going in a light car and it was going to be both quick and consistent, it was an interesting read and to me what he was doing made perfct sense and it goes back to my early day of bracket racing (when i had time and resources to go every week-end). The guys that always went to the money rounds week after week always seemed to have very basic combos (like 468 chevies and under carbed 340's) that were just dead-nuts reliable and eerily consistent; to a man each one of them said to go rounds you want to build the motor to about 90% of it's potential, keep the revs down and focus on the chassis tuning and cutting lights, don't chase that last .01 of et, I always thought it was really good advice. Keep it in the sweet spot where it's consistent, reliable and easy on parts. I always applied that in a practical sense that once you get past that 90-ish percent level, the incremental gains are smaller and also A LOT MORE EXPENSIVE, plus you supersize it by pushing your whole investment harder, for some that's the dream and ambition and that's great and more power to them, but sometimes it's just as easy to cut the car weight down and go just as fast while still keeping the motor (usually the biggest $$$ investment) on the safe side of the redline. The original question was "how do you like to build them?", which means it's anyone who chimes in personal opinion, so to my mind there's really no 'wrong answers'...I'm getting a little (well really A LOT) tired of all the that nearly every 2+ page thread degenerates to, about to the point where I might need to take a break, maybe just 'lurk' a while to see which direction this website / forum wants to go
Last edited by Streetwize; 03/05/11 12:34 PM.
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Re: stock block stroker big block how big do you like them
[Re: Twostick]
#942398
03/06/11 05:12 AM
03/06/11 05:12 AM
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Joined: Aug 2007
Posts: 2,449 nc
earthmover
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,449
nc
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Re: stock block stroker big block how big do you like them
[Re: Streetwize]
#942399
03/06/11 11:48 AM
03/06/11 11:48 AM
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Joined: Aug 2008
Posts: 941 Texas, USA
ChrgrCuda
super stock
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super stock
Joined: Aug 2008
Posts: 941
Texas, USA
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Quote:
There was a guy on a few weeks ago that built a bracket stroker that had a really conservative cam in it, but it was going in a light car and it was going to be both quick and consistent, it was an interesting read and to me what he was doing made perfct sense and it goes back to my early day of bracket racing (when i had time and resources to go every week-end). The guys that always went to the money rounds week after week always seemed to have very basic combos (like 468 chevies and under carbed 340's) that were just dead-nuts reliable and eerily consistent; to a man each one of them said to go rounds you want to build the motor to about 90% of it's potential, keep the revs down and focus on the chassis tuning and cutting lights, don't chase that last .01 of et, I always thought it was really good advice. Keep it in the sweet spot where it's consistent, reliable and easy on parts.
I always applied that in a practical sense that once you get past that 90-ish percent level, the incremental gains are smaller and also A LOT MORE EXPENSIVE, plus you supersize it by pushing your whole investment harder, for some that's the dream and ambition and that's great and more power to them, but sometimes it's just as easy to cut the car weight down and go just as fast while still keeping the motor (usually the biggest $$$ investment) on the safe side of the redline.
The original question was "how do you like to build them?", which means it's anyone who chimes in personal opinion, so to my mind there's really no 'wrong answers'...I'm getting a little (well really A LOT) tired of all the that nearly every 2+ page thread degenerates to, about to the point where I might need to take a break, maybe just 'lurk' a while to see which direction this website / forum wants to go
I sure would hate for that to happen Wize. I truly look forward to your posts and have based my build on your advice. For those of us that are less experienced, namely me, I hope you stick around and continue to provide your input.
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
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Re: stock block stroker big block how big do you like them
[Re: ChrgrCuda]
#942400
03/06/11 12:24 PM
03/06/11 12:24 PM
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Joined: May 2003
Posts: 13,227 aZLiViN
J_BODY
I Live Here
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I Live Here
Joined: May 2003
Posts: 13,227
aZLiViN
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My first big block build is still residing between my fender wells. Welded 4.15 crank, LY rods, stock caps, stock 69 block no fill, Ross flat tops, ARP main studs, MP rod bolts. Pieced the engine together in the early 90's. Have freshened it and changed heads, but still has the same lower end. Cam was the fan favorite mechanical Ultradyne NF-69 .640 lift. It's always been best with a shift light setting of 5600-5800 rpm. Have shifted higher but didn't change a thing. Ran 4.56 gears, but after we installed a dominator (discovered our top end poor time issues...choking) our trap rpms went up to near 7k, so we dropped down to 4.10's and picked up + brought the rpm down to a more manageable 6200. If/when it fails I'll build another. Best et to date is a 10.04 at 138 in my Mirada.
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Re: stock block stroker big block how big do you like them
[Re: ChrgrCuda]
#942401
03/06/11 12:24 PM
03/06/11 12:24 PM
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Joined: Jan 2003
Posts: 10,088 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,088
Frostbitefalls MN (Rocky&Bullw...
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I like Streetwise comments on 90 percent. If you are going to bracket race, go after it with a vengeance. Build to run hundreds of runs between rebuilds. If you like to chase ET, well, its' gonna cost ya! The cam and heads you have are a good bracket motor start, provided the lobe profiles on the cam are moderate. Be sure to pick your valve train parts very carefully for the intended use.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: stock block stroker big block how big do you like them
[Re: gregsdart]
#942402
03/06/11 02:04 PM
03/06/11 02:04 PM
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Joined: Aug 2007
Posts: 2,449 nc
earthmover
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,449
nc
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this is a good info from you guys and i do thank you all. ..as far as the valve train i have most of the parts for the build .. parts list -1 heads with 2.25 valve (should go 350) t&d 1.6 rockers 440-2 single plan intake with 2" spacer for 4500 carb howards 7.125 alum. rods (mopar bearing) lunati cam 280 @ 50 731 lift with 1.6 rockers 440 block have not done anything to it as of yet being collecting info... also have pushrods that came with the heads off of a 440 build the car this motor will be in is my 70 duster it will have ladder bars,coil overs, and the frontend will be changed over to coild overs and rack,will be useing fiber glass on the hood,bumpers,and maybe the doors,the car is mini tubbed now and have had a 29/10.5w on it before on a 10" rim so i would like tostay around that size tire out back,headers we are going to try and build if we dont find a good set for a good price lol..car will be foot no trans brake so with this combo of parts you guys tell me what you would build..
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Re: stock block stroker big block how big do you like them
[Re: earthmover]
#942403
03/06/11 06:18 PM
03/06/11 06:18 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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The 451 low deck was deadly consistent and very durable. I think if I had replaced valve springs on it after ten years it may still be running? It was a pump gas 11:1 compression build with a mild solid roller 251/251 @50, 0.620"/6.20" cam and brodix B1 B/S heads. I would estimate the engine may have made close to 580 HP at the crank? Chassis Dyno was only 452 HP at the rear tires? Bottom end was just ARP studs and 1/2" pickup with larger oil pan. 4,150# '71 Charger with near stock suspension (bad 60' times), 3,500 stall 10" converter (launched at 1200-1500 RPM, any more the sires would smoke off the line), 3.91 gear, and 10x27" MT street ET radials. At Bandimere, 12.50@110 (consistent) usually only varied 0.02 either way? Consistency may have been because I had no air scoop, so the air was more consistent temp coming through the radiator? Took the car to MATS, and ran 11.8's @ 115 off the trailer with no tuning changes. I hope the new 500" 4.15" stroke, low deck works as well, but with 100+ more HP. 557 rear wheel HP on the chassis dyno. I went with the BCR caps and girdle on this engine. max wedge victor heads, and flat tops give me 12.4:1 compression. This engine uses an agressive solid roller cam (Comp HXL Lobes), 264/264 @ 0.050", 0.714"/0.714" lift. Indy 400 single plane for my old 4150 style Holley 1,000 cfm carb. I'm sure there is more in the engine if I used a larger cam, and intake/carb, but it looks like my shift points will be close to 7,000 RPM as it stands. Right now this is more engine than my car is set-up for. I'm looking at getting a roll bar, dana60 spooled axle, and a new driveshaft.
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