New world products shortblock! Help me build it!
#2855159
12/04/20 10:53 AM
12/04/20 10:53 AM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I should be getting a call from Todd at Marsh Performance any day to confirm shipment of a new aluminum block. I would like input on what to do to make this shortblock meet or hopefully exceed the 926 hp the megablock made. I will be reusing the 4.315 stroke crank, heads, valvetrain and induction. The megablock had 15/1 compression, line2line skirt coatings, .043 top and second rings, low ten oil rings. Gas ported, 6.86 hbeam 2.20 journal rods. Sugestions?
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: sasquatch]
#2855199
12/04/20 12:52 PM
12/04/20 12:52 PM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Already have a 3x, gear drive. The cam is an inverted flank roller from mike Jones. Budget says bigger cam might not be in budget.( + pushrods, springs, lifters to match?) Don't know how i would find room for the belt on a belt drive oil pump. Hoping to find a little power in a great ring pack and type, need your input on that and pistons. I may go to 7.1 long rods but if using the original 6.86 hbeams i have won't make for less power or too heavy of a piston i will stick with them. They have dyno time and 7 runs on them. Dwayne what are your thoughts on pistons rings and rod length? Procharger aye? Would be nice but $$$$$$$$$$$. New trans, driveshaft, axles, cage upgrade and chassis cert, license upgrade, 😒
Last edited by gregsdart; 12/04/20 01:02 PM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2855228
12/04/20 01:44 PM
12/04/20 01:44 PM
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Joined: Feb 2003
Posts: 1,117 Massillon, Ohio
cudatom
super stock
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super stock
Joined: Feb 2003
Posts: 1,117
Massillon, Ohio
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I was in the same boat as you. Wanted to make a certain level of power to run a specific class. It would have been a real stretch and max effort with my heads.
I talked to Todd and we decided different heads would go a long way to achieving my goals. It did add significantly to my budget but I still believe it was a good choice.
Todd has been great to deal with from ordering my KB wedge and engine build.
Ok
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Re: New world products shortblock! Help me build it!
[Re: AndyF]
#2855256
12/04/20 02:23 PM
12/04/20 02:23 PM
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Joined: Feb 2003
Posts: 1,117 Massillon, Ohio
cudatom
super stock
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super stock
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Massillon, Ohio
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How much crankcase vacuum do you run? Can you run more vacuum? If so, talk to some ring mfgs and see what they suggest for a high vacuum ring package. You will spend a lot of money chasing small gains. If you want to spend a lot of money for big gains then sell your -1 heads and buy some 572-13 heads. Andy good advice and the same that Todd gave. That is the direction I went.
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2855258
12/04/20 02:24 PM
12/04/20 02:24 PM
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Joined: May 2004
Posts: 12,478 Taxes & Virus's R-US, NY
Dragula
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I have no idea....You are 200hp ahead of me on one of these.....lol, so I will be keeping an eye on you to see what I can learn. My little 541 is starting to come together and will have 14.5:1....So we will see where I end up...
Last edited by Dragula; 12/04/20 02:25 PM.
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2855336
12/04/20 04:40 PM
12/04/20 04:40 PM
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Joined: Jan 2003
Posts: 11,786 Portage,michigan
B3422W5
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I should be getting a call from Todd at Marsh Performance any day to confirm shipment of a new aluminum block. I would like input on what to do to make this shortblock meet or hopefully exceed the 926 hp the megablock made. I will be reusing the 4.315 stroke crank, heads, valvetrain and induction. The megablock had 15/1 compression, line2line skirt coatings, .043 top and second rings, low ten oil rings. Gas ported, 6.86 hbeam 2.20 journal rods. Sugestions? Thinner rings and spacers
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam, footbrake street/strip car Best so far, 10.32 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: New world products shortblock! Help me build it!
[Re: AndyF]
#2855392
12/04/20 06:58 PM
12/04/20 06:58 PM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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How much crankcase vacuum do you run? Can you run more vacuum? If so, talk to some ring mfgs and see what they suggest for a high vacuum ring package. You will spend a lot of money chasing small gains. If you want to spend a lot of money for big gains then sell your -1 heads and buy some 572-13 heads. I used to run 10 inches of vacuum, but want to stay out of trouble so not sure how much to run? I would love to switch heads, but budget is tight so i am looking for what ever i can pick up for power at a little lower cost. Basically what pistons and ring package, vacuum, stuff i may have to buy anyway. Todd suggested a belt drive rather than my gear drive, may go that route.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: powertrip]
#2855734
12/05/20 03:00 PM
12/05/20 03:00 PM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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As has been said already, heads would get you the most power, but would be $$. Bang for the buck? I would go with a 4.5" crank and 7.1" rod. More power especially at shift recovery, lighter bobweight, and not much $ when you sell your old stuff. Plus would be a better foundation when you finally upgrade your heads. I agree that would be great to get a rew more cubes. My current crank is a Crower center wieghted piece , replacement cost over $2500, best steel short of billet (en30b?) Rods are 849 gram hbeam 2.200 journals, so not a lot to gain? Since i am going aluminum block that center wieghted crank may aid in less cylinder distortion and better ring seal.
Last edited by gregsdart; 12/05/20 08:40 PM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2855868
12/05/20 10:49 PM
12/05/20 10:49 PM
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Joined: Oct 2006
Posts: 1,266 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
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New York, USA
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I didn’t see it mentioned, and i would have to search back to your eng build threads from past, but oil pan design. A good scraper , maybe zero clearance teflon scraper. Good oil pan.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: New world products shortblock! Help me build it!
[Re: Chargerfan68]
#2855898
12/06/20 03:10 AM
12/06/20 03:10 AM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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I didn’t see it mentioned, and i would have to search back to your eng build threads from past, but oil pan design. A good scraper , maybe zero clearance teflon scraper. Good oil pan. I have a Charlies pan that is very good. Uses a big screen. I tried a scraper but showed no gain at the track, and gave up trying to stop it from leaking. I would assume the next move would be to a dry sump but i would have a real problem packaging that with my current setup.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2855927
12/06/20 09:58 AM
12/06/20 09:58 AM
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Joined: Mar 2018
Posts: 118 NW Indiana
powertrip
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As has been said already, heads would get you the most power, but would be $$. Bang for the buck? I would go with a 4.5" crank and 7.1" rod. More power especially at shift recovery, lighter bobweight, and not much $ when you sell your old stuff. Plus would be a better foundation when you finally upgrade your heads. I agree that would be great to get a rew more cubes. My current crank is a Crower center wieghted piece , replacement cost over $2500, best steel short of billet (en30b?) Rods are 849 gram hbeam 2.200 journals, so not a lot to gain? Since i am going aluminum block that center wieghted crank may aid in less cylinder distortion and better ring seal. Didn't realize you had a high-end crank, I wouldn't replace it with standard 4.5" stroker. Now I'm thinking 4.625" center counter weight rotating assembly, hard to find and expensive, but still cheaper than heads. you are at the point (as I'm sure your realizing) that any gain in ET is going to be expensive. I don't think better piston and rings are going to get you there. Start thinking about future upgrades, more cubes make more power under the curve, easier on the valve train, less sensitive on matching the convertor, etc.
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2856376
12/07/20 06:05 AM
12/07/20 06:05 AM
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Joined: Aug 2003
Posts: 1,314 Charlotte, NC
LSP
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pro stock
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Charlotte, NC
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Already gave you a piston, pin,ring pkg. (Yes, you'll gain hp and durability).
Go with 7.100" long Molnar rod # DH7100VTB8, the longer length will get the piston lighter, and won't load the cylinder liners as hard as the shorter rod (better ring seal, better durability).
A belt driven cam and distributor isn't going to show you big gains, spend the money where it matters more.
I did a 470 that was 10.5-1 compression, single 4150 carb, 400 cfm head, 277/285/112 in @ 108 that went 8.50's at 2920 lbs., you should run better than that.
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Re: New world products shortblock! Help me build it!
[Re: LSP]
#2858061
12/10/20 12:50 PM
12/10/20 12:50 PM
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Joined: Jan 2003
Posts: 10,091 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Some decisions have been made so far. I want to go with Gibtech for pistons, file fit ss .9 mm, .9mm, 3mm rings , lateral gas ports because the primer plus produces a lot of carbon, a belt drive. The gear drive i am using is most likely a big contributer to past valvetrain issues and though it puts a huge hole in the budget, important. Rods will be 7.10 molner. I want to go with line2line skirt coating again since the megablock produced very good numbers with it, far exceeding my expectations despite one weak cylinder and the geardrive, which i understand takes a lot of power to run. Now all i need to do is fund this deal. 🤔
Last edited by gregsdart; 12/10/20 02:00 PM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: New world products shortblock! Help me build it!
[Re: gregsdart]
#2858083
12/10/20 01:36 PM
12/10/20 01:36 PM
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Joined: Jan 2003
Posts: 16,936 NC
440Jim
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I am jealous.... I should have driven over to Todd's and taken your block home with me..... I have a good set of B1 originals that would go with it. LOL But I plan to run next year with my same 570 hp iron headed, truck motor... I would stay with the crank you already have, with 4.500" bore it will be great.
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