My Vortec headed 383 - Dyno Results! - Third Generation F-Body Message Boards


Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

My Vortec headed 383 - Dyno Results!

Reply
 
Thread Tools Search this Thread
Old 05-23-2012, 04:12 PM   #1
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


My Vortec headed 383 - Dyno Results!

I recently built a Vortec headed 383 for my 86 IROC, last saturday we finally got around to putting it on the dyno. The Specs are as follows:

"880" roller block, Scat crank, Compstar rods, wiseco forged pistons, 10.2:1 CR, custom hyd roller cam (.563"/.544", 224/229 duration @ 0.050", 110 LSA, installed on a 108 intake centerline) 906 vortec heads, CHE bronze valve guides installed to solve the retainer to seal clearance issue, valve sizes were opened up to 2.02"/1.60", Bowls were blended to accomodate the new larger valves, spring pockets were cut to fit a beehive valve spring, machined them for screw in studs and guideplates. No other porting was done to the intake ports, the exhaust we raised the roof of the port 0.075" and opened up around the guide. The intake was a edelbrock performer RPM, with AED 750HO carb.

Here are some shots of building/machining the engine...

Boring it the cylinders

Name:  IMG_0652-1.jpg
Views: 957
Size:  109.0 KB

Surfacing the block

Name:  IMG_0655-1.jpg
Views: 961
Size:  97.9 KB

Torque plate bolted on, preparing to hone the cylinders

Name:  IMG_0688.jpg
Views: 957
Size:  93.7 KB

Honed!

Name:  IMG_0690.jpg
Views: 952
Size:  94.3 KB

Weighing parts for the balance

Name:  IMG_0703.jpg
Views: 952
Size:  130.9 KB

Name:  IMG_0706.jpg
Views: 954
Size:  77.6 KB

Scat crank

Name:  IMG_0709.jpg
Views: 958
Size:  112.5 KB

Balancing the crank

Name:  IMG_0711.jpg
Views: 960
Size:  90.4 KB

Name:  IMG_0716.jpg
Views: 958
Size:  116.3 KB

Checking pin bore clearances.

Name:  IMG_0707.jpg
Views: 959
Size:  78.8 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:17 PM   #2
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Block all washed up

Name:  IMG_0718.jpg
Views: 955
Size:  102.4 KB

Name:  IMG_0720.jpg
Views: 959
Size:  121.0 KB

Block painted w/ cam bearings and plugs installed.

Name:  IMG_0722.jpg
Views: 963
Size:  91.1 KB

Checking bearing clearances

Name:  IMG_0724.jpg
Views: 960
Size:  98.7 KB

Crank and cam in.

Name:  IMG_0725.jpg
Views: 962
Size:  96.0 KB

Degreeing the cam, I advanced it 2 degrees.

Name:  IMG_0727.jpg
Views: 958
Size:  104.9 KB

Checking my rod bearing clearance

Name:  IMG_0730.jpg
Views: 959
Size:  64.7 KB

Gapping piston rings

Name:  IMG_0747.jpg
Views: 957
Size:  41.5 KB



Assembling the rods and pistons

Name:  IMG_0749.jpg
Views: 961
Size:  85.8 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:21 PM   #3
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

All together and in the engine...

Name:  IMG_0750.jpg
Views: 957
Size:  104.9 KB

Name:  IMG_0751.jpg
Views: 957
Size:  80.5 KB

Shortblock almost done.

Name:  IMG_0754.jpg
Views: 959
Size:  122.6 KB

Checking rotating clearance on the pan, had to notch it for the lokar dipstick. Thats it.

Name:  IMG_0755.jpg
Views: 958
Size:  111.3 KB

Name:  IMG_0756.jpg
Views: 957
Size:  119.5 KB

Bolted up

Name:  IMG_0757.jpg
Views: 958
Size:  109.5 KB

Porting the exhaust ports

Name:  IMG_0778.jpg
Views: 954
Size:  109.2 KB

Valve job and blending done to the bowls



Crower Enduro stainless bodied 1.6 ratio 7/16" stud rockers

Name:  IMG_0779.jpg
Views: 954
Size:  97.7 KB

Isky adjustable guideplate to get the rocker tips to sit properly

Name:  IMG_0780.jpg
Views: 949
Size:  54.4 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:26 PM   #4
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

I was originally goign to run a Comp dual spring, witha crower titanium retainer but I wanted to lighten up the valve train so I switched to a beehive witha steel retainer. Big weight savings

Name:  IMG_0775.jpg
Views: 956
Size:  65.9 KB

Name:  IMG_0776.jpg
Views: 958
Size:  69.1 KB

Porting all finished up

Name:  IMG_0784.jpg
Views: 953
Size:  69.0 KB

cc'ing the chambers

Name:  IMG_0771.jpg
Views: 961
Size:  71.0 KB

Spring pockets machined to fit a ID style of locator

Name:  IMG_0794.jpg
Views: 989
Size:  135.2 KB

A bunch of material ground out of the pushrod area

Name:  IMG_0801.jpg
Views: 955
Size:  123.5 KB

Surfacing the heads

Name:  IMG_0805.jpg
Views: 957
Size:  93.9 KB

Porting the intake

Name:  IMG_0807.jpg
Views: 963
Size:  78.2 KB

Name:  IMG_0808.jpg
Views: 960
Size:  64.6 KB

Heads surfaced

Name:  IMG_0811.jpg
Views: 957
Size:  126.5 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:35 PM   #5
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Stud bosses milled .400"

Name:  IMG_0817.jpg
Views: 958
Size:  66.7 KB

Lapped the valves

Name:  IMG_0832.jpg
Views: 959
Size:  67.8 KB

Figured out my pushrod lengths



Did a mock assembly to check PTV etc... had .140"+ PTV on both the intake and exhaust, brow clearance was good aswell.

Name:  IMG_0827.jpg
Views: 962
Size:  98.9 KB

Name:  IMG_0829.jpg
Views: 957
Size:  86.6 KB

Heads fully assembled

Name:  IMAG0624.jpg
Views: 958
Size:  133.3 KB

Bolted on

Name:  IMAG0625.jpg
Views: 956
Size:  112.8 KB

Guideplates fit and studs torqued down where I want them

Name:  IMAG0626.jpg
Views: 954
Size:  115.2 KB

Manton 5/16" .118" wall 7.300" pushrods

Name:  IMG_0836.jpg
Views: 949
Size:  57.0 KB

Name:  IMG_0835.jpg
Views: 971
Size:  62.9 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:39 PM   #6
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Rockers installed

Name:  IMG_0838.jpg
Views: 954
Size:  101.1 KB

We lube the pushrod and valve tips with this

Name:  IMG_0839.jpg
Views: 955
Size:  84.9 KB

Filled with Joe gibbs breakin oil

Name:  IMAG0633.jpg
Views: 948
Size:  106.5 KB

Checking port alignment

Name:  IMG_0842.jpg
Views: 958
Size:  66.7 KB

Intake bolted up and sealed, primed it, had 60psi oil pressure, had oil to all 16 rocker in under 20 seconds.

Name:  IMAG0635.jpg
Views: 959
Size:  133.8 KB

Pretty much ready for the dyno.

Name:  IMAG0638.jpg
Views: 956
Size:  146.0 KB
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 04:53 PM   #7
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Bolted it up to the dyno friday night, my hooker supercomp headers wouldnt fit so I bolted up a set of out 1 3/4" dyno headers.

Started the jetting out at 72's in all 4 corners with 4.5" power valves, First pull it made 451HP, and 472 ft-lbs of tq.

Took two jet sizes out of it and made another pull, 455 HP and 475 ft-lb's of tq.

BSFC was telling us the fuel curve was where is need to be, So I gave it another 2 degrees advance (34-36) which picked up the HP a bit

We figured it wanted more plenum volume so we tried a 1" open carb spacer which woke it up alot. W/ 36 degrees total timing, 70's all around it made 466hp, and 486 ft lb's of tq.

We had a bit to much oil pressure, so we drained the breakin oil, cut open the oil filter, which was clean, and filled it up with Joe Gibbs 10w30 synthetic hot rod oil. We also blended the 90 degree edge where the choke horn was milled off and jetted the primaries up 1 size to a 71. Opened up the high speed air bleeds 0.005" as it was a little fat in the top end. This pull brought us to out final numbers 474HP @ 5500RPM, and 493 ft-lbs of tq @ 4800RPM. It made over 420 ft lbs of tq at 3000 RPM and carried it to 6000RPM. Overall I am very happy with the results considering its a GM head casting with dual plane intake.

Here is a video of the second to last pull

http://www.youtube.com/watch?v=ni0xCy9bmTM
1986Z28OWNER is offline   Reply With Quote
Old 05-23-2012, 05:02 PM   #8
Supreme Member
iTrader: (3)
 
Join Date: Mar 2003
Location: Rockledge, PA
Posts: 1,119


Re: My Vortec headed 383 - Dyno Results!

Nice results, can't wait to see some ET's out of it. Also it gives me some ideas for my old vortecs that are sitting around. Hopefully my AFR vortecs make as much power as yours did.

-Jim
conlinj is offline   Reply With Quote
Old 05-23-2012, 05:07 PM   #9
Senior Member
 
Join Date: Jul 1999
Location: Christchurch, New Zealand
Posts: 562


Re: My Vortec headed 383 - Dyno Results!

You don't have any more pictures do you? :-) Nice job.
Cosmik Debris is offline   Reply With Quote
Old 05-23-2012, 05:33 PM   #10
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Quote:
Originally Posted by Cosmik Debris View Post
You don't have any more pictures do you? :-) Nice job.
Yah, look at my build thread haha.
1986Z28OWNER is offline   Reply With Quote
Old 05-25-2012, 04:27 PM   #11
Supreme Member
 
L695speed's Avatar
 
Join Date: Feb 2007
Location: Andover, NJ
Posts: 1,275
Car: '88 Trans Am GTA; '84 Trans Am
Engine: L98 350TPI; 5.3 LSx built
Transmission: N/A; T56
Axle/Gears: 3.70 9 bolt; 3.73 10 bolt


Re: My Vortec headed 383 - Dyno Results!

I just found this thread, sounds like you did something very similar to what I had in mind. Guess I won't be worrying about the power LOL! I was hoping for 425 or so. But it seems like I'll getting what I want and then some. Where is your build thread so I'm not digging through all the threads looking for yours.
L695speed is offline   Reply With Quote
Old 05-25-2012, 09:51 PM   #12
Member
 
Join Date: Mar 2004
Posts: 408
Car: 1984 Camaro
Engine: LS1
Transmission: T56
Axle/Gears: Ford 9"/4.30


Re: My Vortec headed 383 - Dyno Results!

Once you get it installed, it sure would be interesting to see a chassis dyno result! I always see engine dyno numbers, or chassis dyno numbers, but rarely both.

I enjoyed the pics, real nice build and that's gonna be one torque monster engine. Good luck with traction on the street.
UnstableAviator is offline   Reply With Quote
Old 05-25-2012, 11:14 PM   #13
On Probation
 
Join Date: Oct 2008
Location: Northern Utah
Posts: 6,319
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none

Re: My Vortec headed 383 - Dyno Results!

Good results.
Atilla the Fun is offline   Reply With Quote
Old 05-28-2012, 11:44 AM   #14
Senior Member
Thread Starter
iTrader: (1)
 
1986Z28OWNER's Avatar
 
Join Date: Sep 2006
Location: Edmonton, Alberta, Canada
Posts: 954
Car: 1986 Z-28
Engine: SBE 5.3 LOL
Transmission: Reid case Powerglide
Axle/Gears: 9", 40 Spline axles, 3.50 gears


Re: My Vortec headed 383 - Dyno Results!

Quote:
Originally Posted by L695speed View Post
I just found this thread, sounds like you did something very similar to what I had in mind. Guess I won't be worrying about the power LOL! I was hoping for 425 or so. But it seems like I'll getting what I want and then some. Where is your build thread so I'm not digging through all the threads looking for yours.
There is a link to it in my sig.
1986Z28OWNER is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Flexplate prob 96 L31 5.7L vortec to 84 camaro 84z96L31vortec Tech / General Engine 7 08-20-2017 01:16 AM
TPI/VORTEC MANIFOLD Tinbender59 Engine/Drivetrain/Suspension Wanted 5 03-17-2017 11:50 AM
Surging/hunting idle bamaboy0323 Tech / General Engine 25 09-03-2015 07:07 AM
Vortec Heads earlpote TPI 5 08-28-2015 11:42 AM
Some questions about TBI.. MustangBeater20 TBI 0 08-05-2015 10:49 PM


Go Back   Third Generation F-Body Message Boards >

Tags
305, 383, 880, block, build, cam, clearence, comp, crank, dyno, dynot, gears, pro, rod, set, sheet, timing, vortec

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Advertising
Featured Sponsors
Vendor Directory

1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 04:11 AM.


All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: