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Old 03-29-2012, 02:51 PM
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383 Stroker build tips

I'm putting a 383 engine in my 75 Nova. I bought a 30 over block and am now looking to buy new parts to start putting this together. I will not be racing this vehicle but i want to be able kick *** on the street. Couple questions

1. Cylinder heads: How do i figure out what the best Max lift would be went buying heads? Does Max Lift have to do with Cam lift?

2. Camshaft/Lifters: Is there a current lift im looking would 2000-5000 rpm be right for street rodding? Or how do i figure out which one to go with?

This engine is my first rebuild and wont be my last. But calling me a Greenhorn with be OK.

Thanks for the info if given.

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Old 03-29-2012, 03:37 PM
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Ideas?

Ok i've been reading other thread within this forum about Strokers. Like i said before im completely new to rebuild engines. I just need some guidence on rebuilding my 350 30over (383) block engine. I have a limited budget and kind of limited time due to being in the Military. I only have 2 years left on my current base and wife wants me to get it road worthly before we leave. Any help with deciding what parts to buy to make this Nova kickass on the street would be a blessing.

Thanks for your help.
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Old 03-29-2012, 05:49 PM
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if you want it to tear up the streets then you will need a different set of gears in it, at least a 3.73:1 not to mention a decent "posi" carrier unit for the rearend. 2000-5000rpm can be realistic, but i would shoot more for a 2500-5500 range (yes it makes a difference). as far as heads go, and you asking about the max lift; you need to decied what kind of cam you will run before buying your heads as the springs will need to match the heads. this isn't that big a deal. do you want a motor that will last some time but yet still make gobs of power, then you would be best off with a hydraulic roller cam (retro fit if you have a pre-87' block)

here is a simple combo that would work well if you are just looking for a strong cruising vehicle.

http://www.summitracing.com/parts/SCA-1-91100BIE/
http://www.summitracing.com/parts/CMB-08-0002/
http://www.summitracing.com/parts/HRS-110525-12/
http://www.summitracing.com/parts/HRS-91164N/
http://www.summitracing.com/parts/HRS-90072/
http://www.summitracing.com/parts/DRT-10321112P/
http://www.summitracing.com/parts/EDL-7101/
http://www.summitracing.com/parts/HLY-0-3310S/

that's a pretty simple combination that will come out to be about 9.5:1 compression so it will run on pump gas and on a guestimate i would say would make right around 425hp/440tq. dont pay attention to the high side of the cam band, with it's duration and it being a 383, you will be making peak power around 5600rpm and that would but your redline around 6100 (but it's not as if you have to shift it there)

with this set up i would run a 2800-3000 stall converter, you will want to have you transmission rebuilt with stronger bands and clutches, and you will want a set of better rear gears such as 3.73:1.

since this is your first build i would strongly suggest that you do some research on chevy small blocks, buy some books and read them, David Vizard makes some great ones (look on amazon). like i mentioned with the parts i suggested the car in stock form wont last long, it will need the work i mentioned plus likely a little help in the rear suspension to get that power to hook. if you are not looking for this kind of power and dont want to have to do work to the car as well you will have to stay in the 325-345hp range.
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Old 03-30-2012, 12:40 PM
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Thanks for the reply. I will definately buy some books and read up. I'm putting this 383 into a 1975 Nova Hatchback that came with a 262 Automatic. It ran well when i bought it. Not sure if this changes anything but thanks again. Im sure ill be posting questions again.
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Old 03-30-2012, 01:01 PM
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A .030" over 350 is a 355, a 383 requires a new crankshaft as well. Just to clarify.

as for what you want to look for there are plenty of 383 builds on the internet, look for one that has a lot of hp at a low rpm. Look at 2500 or 3000 rpm as an indicator.
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Old 03-30-2012, 06:41 PM
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yea, 383 is a 350 bored with a 400 crank squeezed into it. which is what im gonna do.
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Old 03-30-2012, 08:42 PM
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i have a eagle rotating kit in mine with rhs vortec style heads 262 cam and i made 393 hp and 491 ft lbs of torque. with a 4 speed tranny dont no what i have for gears yet cause thay did not break yet but it is some fun to drive. the shop that is around here told me to build for torque if you want to play. i dont no what it would do to my torque if i had a bigger cam
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Old 03-30-2012, 08:44 PM
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i have a eagle rotating kit in mine with rhs vortec style heads 262 cam and i made 393 hp and 491 ft lbs of torque. with a 4 speed tranny dont no what i have for gears yet cause thay did not break yet but it is some fun to drive. the shop that is around here told me to build for torque if you want to play. i dont no what it would do to my torque if i had a bigger cam
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Old 03-31-2012, 05:51 AM
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Quote:
Originally Posted by ap72
A .030" over 350 is a 355, a 383 requires a new crankshaft as well. Just to clarify.

as for what you want to look for there are plenty of 383 builds on the internet, look for one that has a lot of hp at a low rpm. Look at 2500 or 3000 rpm as an indicator.

Did you mean low RPM torque for street use here?
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Old 03-31-2012, 09:12 AM
How fast is fast enough?
 
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You could call it that I guess. Low rpm torque or low rpm hp is basically the same thing though, chasing a tq peak is as uselss on the street as chasing a hp peak though. You need to make power at the rpm you will be driving at.
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