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383 Build question

  
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383 Build question

 
rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/19/12
04:26 PM

I was reading in the month's issue about the 383 build with the 8-71 blower. My question is if you were going to do this build but never use a blower on it could you get buy with a cheaper block? I was looking at summit racing's 383 block and was wondering if people thought it could handle the 500+ HP the build would make.  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/20/12
10:12 AM

rnfrazier welcome to Super Chevy:

  Back in the day we didn't have all the choices we have today. We were squeezing every horse power out of a factory block as we could. All you need like building a house a Good Foundation.
  A 350 2 bolt block can withstand 500 Horse Power. Just use a good ARP bolt on the mains and cylinder heads.
  If you find a production block with this P/N 3932482 or casting #2482 on the 3 inner 4 bolt caps they are nodular iron.
  Places to look that would usually have a 4 bolt block and most times a forged steel crank is a Heavy Duty Truck.
There are NO straight give aways to finding a good 4 bolt block. Grin  Cool

1.You need a block with 4 bolt mains.
2.Atleast .200 on the thrust side after a .030 bore.
3.There are Chevy blocks that under the timing chain cover have a 010 and a 020 or just one of. The 010 has 1% more tin, the 020 has 2% more nickle. That makes the  block stronger. Sometime on the rear of the block also you can find those numbers.
The additional Tin makes the molten metal flow into the casting mold
The additional Nickel makes the Barrels or bores harder and more durable.
I hope this answered some questions. Good Luck...

Bob  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/20/12
02:04 PM

I was thinking of using Summit Racing's 383 block I know guys used to make all kinds of power without buying an expensive block I like the trick flow 230 heads, but the 215 is $700 cheaper and will handle the same lift and has the same valve size. Was also wondering if I need to go with all forged bottom end. Not a car that will see the drag strip much. I know the build in this issue made 571hp on pump gas and no blower. I am probably going to go with the 215 heads though may lose a little. This will be my first engine build. Usually I just make them look good, now i want to build one of my own and I am not going to build a Honda like my son wants  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/20/12
04:47 PM

I hear that Honda Rice burner crap say good bye to it...LOL...

There is No Reason not to use a Summit or Jegs block. 500+ horse power should be easy to do today. To bad you didn't give me the P/N for the cam, and Trick Flows. I could run some numbers to see how much those heads will hurt you.
  But if you can handle a die grinder and do a little port work you can make those 15cc up. But the 215cc is plenty of cylinder head.

Bob  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/20/12
06:34 PM

The part number on the heads is TFS-32400013. The cam part number is 118411 and the grind and series number is R-260/4467-2S-6.96. Lift is 670/625 with a 260/268 degree duration split and  a 106 LSA  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/20/12
08:49 PM

I don't know what your putting this bad boy in if you build it that way, but holy smoke you will be in the upper part of 550 HP. It's one heck of a package. You know your cam doesn't start making power until 4200RPM to 8800RPM that is one stout cam. Bigger head CC and you'll be making some power.

Bob  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/20/12
09:13 PM

Should I go with all forged bottom end? Dart has a set of 230cc heads but they only have 64cc combustion chamber where the 215cc trick flow heads have 72cc combustion chambers. Haven't decided what I am going to put it in. Just want to build a motor that will outdo my neighbors 383 crate motor that he is putting in his truck. He is getting 429 hp. Also would a gear drive be ok in it. I am open to suggestions on a different cam. That is just the one they used in the build.  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/21/12
08:47 AM

What are you looking to do with your final build?

Whats your budget?

Do you want to use a solid roller or hydraulic roller?

A good 350 block will handle 500 HP with NO Problem.

A 383 is a good way to make some HP & TQ.  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/21/12
11:32 AM

Here is 4 different Crane Cams

HR-284-2S-121G
222/230 509/528
HR-302-2S-10.041G
240/244 558/558

SR-228/338-2S-121G
228/236 507/525
SR-244/362-2S-121G
244/252 543/561  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/21/12
03:54 PM

I was looking at using the scat 9000 series crank, 6.0 I beam rods and JE flat top pistons. The car won't be driven alot and it will spend a little time at the track. Just something to build for fun  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 10/22/12
05:22 PM

Does it look like the crank, rod and piston selection will work?  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 10/25/12
06:29 AM

The 9000 series rotating assy. is a good way to go! It's supossed to be balanced but take the assembly and have it done with all your parts. If an automatic bring those reciprcating parts. If a manual trans bring all those parts. Flywheel, clutch, pressure plate, and don't forget the damper....
  You won't regret the extra $250.00. I get them in my shop and they are out of balance. Bring anything that will spin in your engine assembly. If the machine shop doesn't need it take it somewhere else. Each piston,ring,and connecting rod bearings all those parts..... Grin  Cool

Bob  

rnfrazier rnfrazier
I love my Chevy Chevette! | Posts: 7 | Joined: 10/12
Posted: 11/01/12
10:05 AM

Thanks for the help and any other suggestions would be appreciated