Hot Street Stroker RB 512 or 528
#2522684
07/16/18 05:55 PM
07/16/18 05:55 PM
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Joined: Jun 2018
Posts: 114 Oklahoma City, Oklahoma
MrMayhem
OP
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OP
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Joined: Jun 2018
Posts: 114
Oklahoma City, Oklahoma
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Hey guys, I'm getting ready to start burning up my credit cards available balance by ordering parts for my RB based stroker that I am building for my HOT street orientated 72 Road Runner. The plan is to be well in the 650-700 HP range at the crank and still be able to drive it to the mall or have the wife grab groceries. Maybe I am reaching high but I bet it's doable. I was sold on the 512 kit with a set of Trick Flow 240 heads and a Hydraulic Roller cam topped with Fast FI for drivability. Then I kept scrolling down the 440 Source webpage and the CU IN numbers kept getting bigger My question is it worth going to the 528 vs the 512? So much its worth the effort of having to install external plumbing for the oil pick up? With the longer stroke of the 528, I'd expect it to be a very strong motor producing gobs of torque but will it fall on it's face over 5500 RPM? Has anybody built a 440 Source 528 and have something to share about it? A little about the car: The Car is a full Rotisserie resto/mod car with mini tubs, spring relocation and Caltracs. Dana 60 with 3.91 gears. Auto trans not yet decided on, possibly the 200R4 conversion or a 4l80E if I decide to hack up the tunnel. This car will have full interior, PS/PB and the creature comforts of A/C to boot. Thoughts? Suggestions? Wisdom? Thanks Pete
Last edited by MrMayhem; 07/16/18 05:57 PM.
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2522698
07/16/18 06:29 PM
07/16/18 06:29 PM
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Joined: Dec 2013
Posts: 4,669 Wichita
GY3
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master
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Wichita
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The "512" kit (really 505" at .030 over with a 4.25 stroke) is really nice in that it drops into the block when you use the 2.20 Chevy rod journal. The closest point is the oil pump pickup boss. Usually okay with ~.060 clearance.
Not sure you need the extra cubes because all you are doing is moving the peak numbers the heads produce lower in the RPM range. You will have GOBS of torque with the 512. Mine makes 714 ft/lbs. At 3450 RPM with head numbers similar to the Trickflows.
Mine has a small hydraulic roller and it pulls hard to the 6400 rpm limiter.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2522701
07/16/18 06:33 PM
07/16/18 06:33 PM
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Joined: May 2005
Posts: 1,030 ohio
67mprfan
super stock
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super stock
Joined: May 2005
Posts: 1,030
ohio
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512 would be my choice unless you have a aftermarket block
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's
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Re: Hot Street Stroker RB 512 or 528
[Re: AndyF]
#2522738
07/16/18 07:16 PM
07/16/18 07:16 PM
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Joined: Mar 2013
Posts: 47 CO
Nitrojunkee
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Go with the 4.25 stroke with Chevy rods. I think 440 Source uses 7.100 long rods and an Icon piston. You can get slightly better parts if you use a SCAT stroker kit with Mahle pistons.
For a street engine I'd stay away from the external oiling. External oiling is just a constant source of frustration on a street car. You don't even need the 1/2 inch NPT internal oiling on a street car but it might be a good idea on a race engine.
TF 240 heads are good and if you get the correct HR cam then you'll be golden. EFI is a very good choice. Either FAST or the Holley Sniper if you're going throttle body. Why is that?
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Re: Hot Street Stroker RB 512 or 528
[Re: merpar]
#2522818
07/16/18 10:05 PM
07/16/18 10:05 PM
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Joined: Jan 2003
Posts: 2,094 central texas
krautrock
top fuel
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top fuel
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central texas
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What the heck. I'll be the odd duck. A low deck 470 with the 240 heads would be killer. That's the 3.900 stroke with around .625 lift roller cam. Am sure some on here will agree. It's just a great combination. My nephew built one for his 68 road runner. He went from a 451 to 470, says it scares him to drive it on the street. Maybe he will see this and put in his 2cents. 451 to 470 and making what other changes, do you know? low deck 451?
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Re: Hot Street Stroker RB 512 or 528
[Re: Nitrojunkee]
#2522891
07/16/18 11:45 PM
07/16/18 11:45 PM
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Joined: Mar 2009
Posts: 1,169 Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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Go with the 4.25 stroke with Chevy rods. I think 440 Source uses 7.100 long rods and an Icon piston. You can get slightly better parts if you use a SCAT stroker kit with Mahle pistons.
For a street engine I'd stay away from the external oiling. External oiling is just a constant source of frustration on a street car. You don't even need the 1/2 inch NPT internal oiling on a street car but it might be a good idea on a race engine.
TF 240 heads are good and if you get the correct HR cam then you'll be golden. EFI is a very good choice. Either FAST or the Holley Sniper if you're going throttle body. Why is that? Yeah I would like to know why also? I've been running them on my cars for over 25 years, all on the street and never an issue. If anything more peace of mind knowing I'll never starve it for oil......
Last edited by Old School; 07/16/18 11:47 PM.
68 cuda formula S 588" bb 5sp 70 CUDA CONVERT 500" 5SP (SUBLIME) 70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2522892
07/16/18 11:45 PM
07/16/18 11:45 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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I'd skip the hydraulic roller. If you want, use the hydraulic cam and put solid lifters on it. Lash it at .002 cold and forget it. You can use 220-240 on the seat and it will live forever.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523035
07/17/18 12:56 PM
07/17/18 12:56 PM
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Joined: Dec 2013
Posts: 4,669 Wichita
GY3
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Does anyone have any cam recommendations? Somebody stated skip the Hydro Roller, why? I'm not 100% opposed to a solid roller, just rather have not have to adjust the valves 4 times a year. This is what I run: https://www.summitracing.com/parts/hrs-723445-10
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523039
07/17/18 01:03 PM
07/17/18 01:03 PM
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Joined: Jan 2003
Posts: 30,994 Oregon
AndyF
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I Win
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Oregon
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Does anyone have any cam recommendations? Somebody stated skip the Hydro Roller, why? I'm not 100% opposed to a solid roller, just rather have not have to adjust the valves 4 times a year. A hyd roller works fine in a big stroker since you don't need a lot of RPM to make power. A 505 with standard port heads will be pretty much finshed by 6500 rpm so it is a good match for a hyd roller cam. If you're building a street engine then don't get wrapped up in race engine thinking. A good street engine will have a smooth idle and a bunch of torque down low and if it runs out of steam a little early then so what. How often are you going to unleash 650 hp on the street anyway?
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Re: Hot Street Stroker RB 512 or 528
[Re: GY3]
#2523041
07/17/18 01:11 PM
07/17/18 01:11 PM
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Joined: Jan 2003
Posts: 4,270 Morrow, OH
markz528
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Morrow, OH
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The "512" kit (really 505" at .030 over with a 4.25 stroke) is really nice in that it drops into the block when you use the 2.20 Chevy rod journal. The closest point is the oil pump pickup boss. Usually okay with ~.060 clearance.
Not sure you need the extra cubes because all you are doing is moving the peak numbers the heads produce lower in the RPM range. You will have GOBS of torque with the 512. Mine makes 714 ft/lbs. At 3450 RPM with head numbers similar to the Trickflows.
Mine has a small hydraulic roller and it pulls hard to the 6400 rpm limiter. To be clear, with 4.25 inch stroke and 0.030 inch overbore it works out to a 505 cubic inch. 0.060 inch overbore will equal to a 512 cubic inch motor.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: Hot Street Stroker RB 512 or 528
[Re: merpar]
#2523047
07/17/18 01:38 PM
07/17/18 01:38 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
I Live Here
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I Live Here
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State of confusion
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What the heck. I'll be the odd duck. A low deck 470 with the 240 heads would be killer. That's the 3.900 stroke with around .625 lift roller cam. Am sure some on here will agree. It's just a great combination. My nephew built one for his 68 road runner. He went from a 451 to 470, says it scares him to drive it on the street. Maybe he will see this and put in his 2cents. My street/strip 470 rips of mid 9's and 6-teens with ease and is a BLAST to drive and very low maintenance even with an Isky .680-.660 276-281 solid roller.............
Last edited by Thumperdart; 07/17/18 01:38 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523118
07/17/18 03:47 PM
07/17/18 03:47 PM
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Joined: Jan 2003
Posts: 13,354 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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Marion, South Carolina [><]
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I have single line external oiling on 2 different cars and never have any problems w/ either one. Heard of people losing prime, but I've never had that problem in 15 years. Only real issue I've seen is you need a deep sump pan for the external pickup. Can hang a lil low on the street. I use the 440source low profile aluminum pan on my hemi...works great and has good ground clearance.
My opinion for the OP...I'd use the 4.25" stroke w/ 2.2 rods, internal p/u so you can use a shallow pan if you want, and a solid roller. If you have good rockers, you don't need to lash the valves often at all. I check mine twice a year...I say check b/c they rarely need any adjusting.
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: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523239
07/17/18 07:45 PM
07/17/18 07:45 PM
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Joined: Mar 2013
Posts: 571 Spring Hill Fl
65Fury440
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mopar
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Spring Hill Fl
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I have the 440 Source RB 4.35x4.375 kit (520 ci) and ported TF 240s. (360ish cfms) I used this Howards cam https://howardscams.com/i-24079924-howar...lifter-kit.htmlThe cam works really nice for me installed in at 102 degrees, also used their EDM lifters. It pulls about 8.5 inches of vacuum. I have a 4 speed and manual brakes, cam might be a bit much for power brakes but it pulls well. PS the effort to clearance the oil pickup boss was really minimal, like literally a minute with a die grinder. Here;s a video of the cam installed in at 104 degrees, the extra 2 degrees of advance really cleaned it up down low. https://www.youtube.com/watch?v=7ygXG7bcL2o
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523270
07/17/18 09:40 PM
07/17/18 09:40 PM
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Joined: Oct 2007
Posts: 4,206 New York
polyspheric
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New York
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Low deck advantage: slightly more room for big radius tube leaving the exhaust port.
Boffin Emeritus
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Re: Hot Street Stroker RB 512 or 528
[Re: MrMayhem]
#2523428
07/18/18 03:42 AM
07/18/18 03:42 AM
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Joined: May 2008
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451Mopar
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The 4.25" stroker kit is pretty easy to install. Usually just need to take a bit off the oil pickup boss, and you can still use the internal oil pump pickup tube, and don't have the clearance the bottom of the cylinder bores. On a non-race street type engine the 6-quart Hemi oil pan fits nice and does not hang down below the K-member. With the TF240 heads and Hydraulic roller cam, I would not expect more than 650 HP. If your looking for 700+ HP, the TF270, larger port intake manifold, and solid roller is likely needed, but that is more of a race setup than street. With the stock engine block, balance the need for displacement with durability. The only issue I really have with the 440 source kit, is I wish they offered more piston choices than the ICON pistons.
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