full race 383 build. - Chevelle Tech
Performance Our High Performance area

 8Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 30 (permalink) Old Oct 7th, 19, 9:59 AM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
full race 383 build.

I have a fellow race who is looking to race a new class next year. Car is a h body that weighs 2820 with him in it. he currently has a vortec headed 355 don't know much about it as it was a online rebuild engine, car went high 11's on a 125 shot of N20. He wants to go 10 flat N/A and save the spray just in case. I said since his block needs bored he might as well go 383CI and run 110ll since he has been running 91 oct as that is all we have up here at the pump, he does use some kinda octane booster currently not sure what.

My thoughts on the 383 would be 550hp N/A, I was thinking 1k200 or afr 195's with 12:1 comp and a solid roller cam. how far off am I in thinking on this combo?

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
Sponsored Links
Advertisement
 
post #2 of 30 (permalink) Old Oct 7th, 19, 12:08 PM
Lifetime Premium Member
Jim
 
Join Date: Nov 1999
Location: International Falls MN
Posts: 6,276
Re: full race 383 build.

550 hp should get high 9's if the car works. But 550 hp might be hard to find on the mountain top.

Jim

77 Monte
421 Profilers ported by Eric Weingartner, Straub HR 3200 conv. from Jake 200-4r w/ 3.73's
Machine work by Torvinen's machine
11.93 @ 112.7 & tuning
67 Imp.SS for the wife 275 hp 327-TH350
77 cruiser is online now  
post #3 of 30 (permalink) Old Oct 7th, 19, 12:37 PM
Team Member
George
 
Join Date: Feb 2010
Location: Upper Sandusky, Ohio
Posts: 2,650
Re: full race 383 build.

A buddy has one he races....3000#, not sure if that is with him in it. He just went to a Dart block 427, 230 Dart heads, .700ish lift solid roller, 14:1 compression on e85. Runs 6.teens consistently. Only a few weekends on the 427...

With his old 406 similar compression, same heads and smaller cam ran 6.20's consistently. In the 1/4 was 9.80's I think he said.

You probably will want more head than the 195's. Another friend has a 70 Camaro with a 383, AFR 195's, .580 lift solid roller, about 10-11:1 range compression, and he runs 7.30's...Should be around 11.40-50's in 1/4

We spec'd out my 383 for mid 10's in my chevelle and went with the ported profilers / intake from Eric W and a solid roller from Jones. Somewhere in the 12-13:1 compression range.

10.0 on motor isn't an easy task.

'71 Malibu
3580 #, Carbed 6.0l LS swap in process
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
383 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is offline  
 
post #4 of 30 (permalink) Old Oct 7th, 19, 1:18 PM
Senior Tech Team
 
Join Date: May 2006
Location: SoCal
Posts: 11,122
Re: full race 383 build.

Anyone think a 210 or 220 comp port would get him there?

Quote:
This post is a duplicate of a post that you have posted in the last five minutes.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
cuisinartvette is offline  
post #5 of 30 (permalink) Old Oct 7th, 19, 1:28 PM
Boldly procrastrinating
Tom Terrific II
 
Join Date: Oct 1998
Location: Glendale, Az
Posts: 28,306
Garage
Re: full race 383 build.

I'd look at these AFR 210s

https://www.airflowresearch.com/210c...cylinder-head/

add the full competition option and the Ti retainers. if he can hack it, the Ti valves are good option, those big valves are heavy.

these are still stock style, no valve relocation or shaft rocker requirement.

if not in his budget, the 195s with comp option are still good.

Tom Terrific or Terrible Tom, depending on the phase of the moon, passing cosmic rays or other factors not fully understood except by my wife.
Tom Mobley is offline  
post #6 of 30 (permalink) Old Oct 7th, 19, 1:31 PM
Senior Tech Team
 
Join Date: Dec 2005
Location: Lancaster, PA
Posts: 10,984
Re: full race 383 build.

If you are going to build a race gas motor, build enough compression to use it. Don't build an engine too high for pump gas, but too low for race gas. Aim for 13-14:1 compression and go. My friend had one with Brodix Track 1 heads and a small roller that made 575 hp the first time and went 10.40's in a 3140 lbs Chevelle. The second time with more head work and a bigger, (not huge roller) I seem to remember, 262/272 .630 lift and it made 615 hp. This time it was put in a 2600 lbs nova and went 9.76.

Ray


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Best pass 8.87 at 150.98 1.212 60'. Sold 3/2018

1970 SS 396 project in progress. Bought 5/2018
bracketchev1221 is offline  
post #7 of 30 (permalink) Old Oct 7th, 19, 2:00 PM
Senior Tech Team
 
Join Date: May 2006
Location: SoCal
Posts: 11,122
Re: full race 383 build.

Contemplating selling my Dart not sure if it would be enough for him
230cc ported by Mamo 294/230ish...Jesel 1.6 62cc chamber 2.02 valve??

Quote:
This post is a duplicate of a post that you have posted in the last five minutes.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
cuisinartvette is offline  
post #8 of 30 (permalink) Old Oct 7th, 19, 2:47 PM
Tech Team
 
Join Date: Aug 2018
Posts: 175
Re: full race 383 build.

I just spoke to my guy. He said 383 and 550 hp is pump gas with hydraulic roller and 200 to 220 heads. He has 383 10 and a haft compression with there personal designed heads and hyd roller that easily does that. He said skip white offers basically the same 550 horsepower 383 for about 5000.00 complete with there chinese heads. So it can easily be done and a lot more with race gas and a silid roller cam.

RH
RickyHill is offline  
post #9 of 30 (permalink) Old Oct 7th, 19, 3:19 PM
Senior Tech Team
 
Join Date: May 2006
Location: SoCal
Posts: 11,122
Re: full race 383 build.

Those are 260ishcfm at .650, under 190exh if I remember right.
Its going to have to be one hell of a HR to make 550 Id think.

Quote:
This post is a duplicate of a post that you have posted in the last five minutes.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
cuisinartvette is offline  
post #10 of 30 (permalink) Old Oct 7th, 19, 4:08 PM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
Re: full race 383 build.

Quote:
Originally Posted by cuisinartvette View Post
Those are 260ishcfm at .650, under 190exh if I remember right.
Its going to have to be one hell of a HR to make 550 Id think.
white performance machine claims they have a 383 engine that makes 565hp with afr 210's and 10.5:1 with a hydro roller cam.

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
post #11 of 30 (permalink) Old Oct 7th, 19, 4:14 PM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
Re: full race 383 build.

Quote:
Originally Posted by bracketchev1221 View Post
If you are going to build a race gas motor, build enough compression to use it. Don't build an engine too high for pump gas, but too low for race gas. Aim for 13-14:1 compression and go. My friend had one with Brodix Track 1 heads and a small roller that made 575 hp the first time and went 10.40's in a 3140 lbs Chevelle. The second time with more head work and a bigger, (not huge roller) I seem to remember, 262/272 .630 lift and it made 615 hp. This time it was put in a 2600 lbs nova and went 9.76.
I thought that too went 13:1 on my 468 when I did it and it ran on 110ll. Thing is was looking at pistons for this deal and most I seen are 12:1 with 64cc chambers if the heads had 58cc chambers would open up a new set of pistons choices.

Truth be told not had time to shop around, his budget is tight. He has a stock 400 crank that could be used but I told him to look into a scat 9000 crank and scat pro I beam 6"rods the pistons are up for debate for sure.

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
post #12 of 30 (permalink) Old Oct 7th, 19, 4:21 PM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
Re: full race 383 build.

It might be a mute point but block will have to go .040 at least as he butted the rings or so he thinks on the 355. All I know at this point is he bought the short block off ebay and got the heads done locally, he ran it for 2 seasons and it started to smoke when he upped the n20 to see how fast it would run on a larger shot. So now it needs a rebuild.

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
post #13 of 30 (permalink) Old Oct 7th, 19, 5:57 PM
Senior Tech Team
 
Join Date: Nov 2003
Location: NORTH EAST
Posts: 3,351
Re: full race 383 build.

Quote:
Originally Posted by Jebchevelle View Post
It might be a mute point but block will have to go .040 at least as he butted the rings or so he thinks on the 355. All I know at this point is he bought the short block off ebay and got the heads done locally, he ran it for 2 seasons and it started to smoke when he upped the n20 to see how fast it would run on a larger shot. So now it needs a rebuild.
Sonic test the cylinders and make sure you have 2482 center caps as those are the performance caps on some of the old GM blocks.Running N02 you should have a good foundation to start with.
Jebchevelle likes this.

Website is up and running

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Machine shop tour

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Monthly Specials

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
CNC BLOCKS N/E is online now  
post #14 of 30 (permalink) Old Oct 7th, 19, 6:55 PM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
Re: full race 383 build.

Quote:
Originally Posted by CNC BLOCKS N/E View Post
Sonic test the cylinders and make sure you have 2482 center caps as those are the performance caps on some of the old GM blocks.Running N02 you should have a good foundation to start with.
Actually I just got a line on a stock bore 817 casting 400 block, it needs bored .030 over. got to go look at it at 4:30 pm my time today.

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
post #15 of 30 (permalink) Old Oct 7th, 19, 7:04 PM Thread Starter
Lifetime Premium Member
Jeff
 
Join Date: Feb 2008
Location: PuebloWest, CO.
Posts: 6,185
Re: full race 383 build.

If he picks up the 400 block this might turn into a 3.875 or even 4.00 stroke build then he will have no trouble getting 550 out of it. Might even squeak 600 out of it. That assuming the 400 block is any good. Crank is same price for either stroke, thing is though then rod and pistons choice will make a difference as well as heads. Cam most likely be on a small base circle not sure how that all will effect cost of build. He was looking at a 3.875 stroke crank to try and put in the 350 block, local machine shop told him they can clearance a 350 block for that crank stroke and scat procomp I beams. They want $450 to bore and clearance the block that includes hot tank but no tq plate hone that is extra, as is is cam bearings. total for the 350 to 383 machine work he was looking close to $585 cost wise. Sounded reasonable to me.

78 Malibu, 402, eddy heads, 174 B&M blower, th350, holley sniper EFI, 9" 3:70, 26X8.50-15 slicks.
69 VW baja 1679cc. stick shift toy.
96 chevy 1500, tow vehicle.
03 yz85 fun bike.
04 scion XB daily driver.
Jebchevelle is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome