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Old 01-06-2013, 07:21 PM
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383 SBC The ultimate stick

383 Chevy Engine - The Ultimate 'Stick

Are the numbers in this article believable? I am particularly interested in the combo that uses the single pattern 206/206 .480/.480 which makes 442HP and 495TQ. I'm looking for a combination to give me lots of torque right off idle and a HP peak of around 5000-5500. The difference in what I will use would be 9.5:1 compression (ZZ383 shortblock), Edelbrock E-Tec 170cc heads, and a single pattern cam such as the above or maybe a Lunati 211/211 .507/.507 110 LSA (if they would grind that for me), and an RPM Air Gap manifold. I'm mostly interested in torque and getting to about 500TQ is my goal even if HP is only around 400. The only thing I'm dead set on is using the E-Tec 170cc heads.

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Old 01-06-2013, 09:28 PM
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you will need a little more duration. would you consider a solid roller with 218-220 duration and more lift? 530 ish would be very good with e tecs
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Old 01-06-2013, 10:21 PM
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Solid roller is nice but I'm wanting to stick with hydraulic roller to keep it simple. Hydraulic rollers is what I've been doing research on. The car weights about 3200 plus the added weight of the large billet wheels so I'm mainly looking to get it moving quickly and that's about it. I prefer a combo that lets me use a stock converter but I'm willing to go up to about 2200 stall.
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Old 01-06-2013, 10:27 PM
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hydraulic roller is second best choice. Use one,with decent heads. Keep the intake runners small for velocity. F.I. would be nice.Its all up to you how you get there
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Old 01-06-2013, 10:40 PM
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Here's a 435 hp 383 build using E-Tec heads and based on the Edelbrock Total Power package....
Building the Little 383 Small Block That Could - ChevyHardcore

I knew nothing about the E-Tec 170 heads, so went and looked at the Stan Weiss head flow site. Seems they will outflow L31 Vortecs handily.
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Old 01-06-2013, 11:06 PM
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Hi TechInspector yes I am very familiar with that article as well as CHP article called Danger Mouse. I've been researching the e tec 170 heads for many months and they are my favorite head. The cam in Edelbrocks kit 234/238 .539/.548 on 112 LSA is a great cam based on what I've read, although some say it's outdated. The e-tec heads don't look the most impressive on paper but they just flat out make power from everything I've read. I wouldn't mind using the Edelbrock 2204 cam but it seems a little agressive and I don't know what it would make down low, say 1500-2000 RPM.
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Old 01-06-2013, 11:19 PM
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Quote:
Originally Posted by bfritch View Post
Hi TechInspector yes I am very familiar with that article as well as CHP article called Danger Mouse. I've been researching the e tec 170 heads for many months and they are my favorite head. The cam in Edelbrocks kit 234/238 .539/.548 on 112 LSA is a great cam based on what I've read, although some say it's outdated. The e-tec heads don't look the most impressive on paper but they just flat out make power from everything I've read. I wouldn't mind using the Edelbrock 2204 cam but it seems a little agressive and I don't know what it would make down low, say 1500-2000 RPM.
9.5:1 is too weak for the Ebrock cam. It needs 10.0 to 11.5 SCR. Makes power from about 2800-6500. Dynamic compression ratio with that cam and 9.5 would make 7.96:1 DCR, leaving half a point on the table, compared with the proper camshaft. Intake closes at 44 if you want to verify it for yourself.
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Old 01-06-2013, 11:39 PM
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something like this maybe?
111145-10 CL111145-10 272 278 219 225 .510 .525 110 106 Hyd. Hyd. 1,2
1500-5600 Fair idle, Performance Street, Nice streetable mid range power. 1800+ stall suggested.
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Old 01-06-2013, 11:50 PM
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Techinspector yes I agree the tests where that Ebrock cam made great power were with a higher compression than 9.5:1. I wouldn't mind having higher compression but using the ZZ383 shortblock I'm limited to something a little less. I'm wanting a cam that gives a strong power band from idle or just above and yes vinniekq2 that Howards cam looks just right except I wonder if I would gain any torque by having that ground 219/219 .510 .510 110 since the E-tecs have great I/E ratios.
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Old 01-06-2013, 11:56 PM
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A 1995 roller block .010 down,.030 over,Scat stroker clearanced rods ARP bolts,18cc I-Con dished pistons,Iron Eagles 180CC runners 72cc chambers cut down to 67cc 9.3'ish SCR= just shy of 500lbs of torque@3500.
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Old 01-07-2013, 12:10 AM
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you could go a little smaller cam and use 1.6 rockers on the intake side. I said something like. I always wait until tech does the exact math.
want more torque play with the ICL,use FI,use a bullet spacer, change the booster venturi if you use a carb,check other intake manifolds, play with header primary length and diameter, use a 3.8 crank if you dont have a crank yet,
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Old 01-07-2013, 12:14 AM
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1Gary is that a simulated build or an actual dyno of a build? What cam was used? Close to 500TQ at 3500 would be great. I know it's doable with a short duration hydraulic roller which is what I plan on using.
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Old 01-07-2013, 12:25 AM
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Vinniekq2 great suggestions and yes I always like it when tech chimes in also. This 383 will be going under the stock hood of an '84 Regal so any spacers are out of the question and so kind of is fuel injection. I have an LY6 in the garage that I don't feel like messing with. The more simple something is the more likely I am to complete the project. I plan on using 1 5/8 long tube headers, I don't have to squeeze every last lb-ft of torque out of it but just hoping to get the most from a simple straight forward set up. I'd go with a ZZ454 if I knew I wasn't going to run into problems like oil pan, hood clearance and header clearance.
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Old 01-07-2013, 12:39 AM
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another intake to look at, holley street dominator. It might not flow enough air.I used one on a stockish 400 and was very happy. Also if you buy a block,then 434/420 engines would make the job easier and the power could come in sooner. Ive seen a 350 block punched 401, using a 3.875 stroke.just have to find the math that works for you. when tech rolls in,he will have a magic link to everything except the paint
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Old 01-07-2013, 12:47 AM
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yes vinniekq2 a big inch small block would be great except that would add to the budget as I don't see myself building an engine from scratch, at least not yet. I may be getting ahead of myself but I've yet to install the turn key fastburn 385 crate motor i bought six months ago. I just plan on putting something else together as soon as I install that engine so I don't have too many things going at once.
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