Heads for my 383ci
Thread Starter
Burning Brakes
Joined: May 2006
Posts: 1,136
Likes: 8
From: Chichester, UK
Heads for my 383ci
Hi
Few of you may know that I am trying to build a 383ci for my 1980.
This engine is going to be +.030, 1986 Roller block, 6” Scat rods, Mahle forged piston, Lunati roller cam, Performer RPM Air-Gap Manifold, RHS Cast Iron 64cc 180cc intake Pro action heads and CR of 9.9:1 with 4-Speed Manual gearbox.
What I would like is car with CRISP/ SHARP Throttle response ‘ the Seat of the pants experience’ between 2000-5500/6000RPM .
As you can see with this cam range between 2000-5800RPM http://www.summitracing.com/parts/LUN-501A4LUN/
Performer RPM intake 1500-6500RPM
180cc heads with small runners, constantly full with charge to about 5500RPM.
I feel that this combination will be what I am looking for.
However, What would I gain if I was going to go with BIGGER ALUMINIUM 200cc intake heads?????
Would I still have the Crisp/Sharp response at 2000RPM as with 180cc heads?
Thank you
Few of you may know that I am trying to build a 383ci for my 1980.
This engine is going to be +.030, 1986 Roller block, 6” Scat rods, Mahle forged piston, Lunati roller cam, Performer RPM Air-Gap Manifold, RHS Cast Iron 64cc 180cc intake Pro action heads and CR of 9.9:1 with 4-Speed Manual gearbox.
What I would like is car with CRISP/ SHARP Throttle response ‘ the Seat of the pants experience’ between 2000-5500/6000RPM .
As you can see with this cam range between 2000-5800RPM http://www.summitracing.com/parts/LUN-501A4LUN/
Performer RPM intake 1500-6500RPM
180cc heads with small runners, constantly full with charge to about 5500RPM.
I feel that this combination will be what I am looking for.
However, What would I gain if I was going to go with BIGGER ALUMINIUM 200cc intake heads?????
Would I still have the Crisp/Sharp response at 2000RPM as with 180cc heads?
Thank you
Melting Slicks
Joined: Feb 2006
Posts: 2,209
Likes: 0
From: Mo
How the throttle reacts is more tune up than heads. IMO a 180 head is to small for a 383. I wouldnt use a head any smaller than 195. going bigger with that intake isnt going to make much more power because of the limited air flow in.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Hi
Few of you may know that I am trying to build a 383ci for my 1980.
This engine is going to be +.030, 1986 Roller block, 6” Scat rods, Mahle forged piston, Lunati roller cam, Performer RPM Air-Gap Manifold, RHS Cast Iron 64cc 180cc intake Pro action heads and CR of 9.9:1 with 4-Speed Manual gearbox.
What I would like is car with CRISP/ SHARP Throttle response ‘ the Seat of the pants experience’ between 2000-5500/6000RPM .
As you can see with this cam range between 2000-5800RPM http://www.summitracing.com/parts/LUN-501A4LUN/
Performer RPM intake 1500-6500RPM
180cc heads with small runners, constantly full with charge to about 5500RPM.
I feel that this combination will be what I am looking for.
However, What would I gain if I was going to go with BIGGER ALUMINIUM 200cc intake heads?????
Would I still have the Crisp/Sharp response at 2000RPM as with 180cc heads?
Thank you
Few of you may know that I am trying to build a 383ci for my 1980.
This engine is going to be +.030, 1986 Roller block, 6” Scat rods, Mahle forged piston, Lunati roller cam, Performer RPM Air-Gap Manifold, RHS Cast Iron 64cc 180cc intake Pro action heads and CR of 9.9:1 with 4-Speed Manual gearbox.
What I would like is car with CRISP/ SHARP Throttle response ‘ the Seat of the pants experience’ between 2000-5500/6000RPM .
As you can see with this cam range between 2000-5800RPM http://www.summitracing.com/parts/LUN-501A4LUN/
Performer RPM intake 1500-6500RPM
180cc heads with small runners, constantly full with charge to about 5500RPM.
I feel that this combination will be what I am looking for.
However, What would I gain if I was going to go with BIGGER ALUMINIUM 200cc intake heads?????
Would I still have the Crisp/Sharp response at 2000RPM as with 180cc heads?
Thank you
We just did a 383 short block with a Callies rotator and Mahle pistons and Dart SHP block for a guy on this site and he decided to go with the Dart 180 aluminum heads and he has a standard tranmission.
If your looking for some better torque tighten up the lobe sep and shorten the split up a little.
The hyd. roller we used is as follows
Duration @ .006 281/284
Duration @ .050 230/230
Gross lift is 570/518
Lobe sep of 109
And had the ever wear gear installed as well
I am hope on he installs the heads and intake it may come back to be dynoed as it sould be pretty good peice for street engine.
Good luck with your build Carl
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Those will work but their sure are better ones out there the ones that are going to be piut on the short block I built will work fine for intended use as he al ready had the heads before he ordered the short block and I would love to have him bring it back for some time on the dyno.
Most of our 383 builds we have used the AFR 195's here are 2 builds I posted on.
Using an air gap with 215 Pro 1's kill the pupose as the CSA is small for those heads.
Look at the second link as both engines were pretty much the same but different intake manafolds.
http://www.chevelles.com/forums/showthread.php?t=106715
http://www.chevelles.com/forums/showthread.php?t=236517
Most of our 383 builds we have used the AFR 195's here are 2 builds I posted on.
Using an air gap with 215 Pro 1's kill the pupose as the CSA is small for those heads.
Look at the second link as both engines were pretty much the same but different intake manafolds.
http://www.chevelles.com/forums/showthread.php?t=106715
http://www.chevelles.com/forums/showthread.php?t=236517
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
New AFR 195's flow the same numbers as my old 215cc Vic jr's which were actually cc'ed at 219cc and made 550HP on my 406ci, so of course they are a great choice for a 383ci motor 
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
Race Director
Joined: Sep 2002
Posts: 10,362
Likes: 5
From: San Diego - Deep Within The State of CONFUSION!
It runs so good that I very rarely miss the crispness it had using the 72cc cast iron heads that were ported & polished when I built the motor originally.
Thread Starter
Burning Brakes
Joined: May 2006
Posts: 1,136
Likes: 8
From: Chichester, UK
Thank you,
Well, the 180cc's are for sale now and bigger ALUMINIUM 200cc are on the way home.
How about my intake.
Should I stick with the Performer RPM Air Gap?
Here is an interesting article about 383ci build with different size heads:
http://www.chevyhiperformance.com/te...est/index.html
Well, the 180cc's are for sale now and bigger ALUMINIUM 200cc are on the way home.
How about my intake.
Should I stick with the Performer RPM Air Gap?
Here is an interesting article about 383ci build with different size heads:
http://www.chevyhiperformance.com/te...est/index.html
Instructor
Joined: Mar 2002
Posts: 140
Likes: 1
From: east hampton ct
Just clarifying Blockmans earlier post on the shortblock he just finished for me. The heads are AFR 180 not Dart. Future plans include a head upgrade but I decided at this time to put my money into a shortblock that would take anything I could throw at it. I must say Carl does very nice work and that SHP block with the Callies rotator is a piece to behold. When I picked up the shortblock there was not a burr to be found anywhere on the block or components. Even the balancing spots on the counterweights had been champhered. Not the slap it together stuff I have experienced in the past. Nice job and thanks Carl.
Drifting
Joined: Dec 2005
Posts: 1,360
Likes: 3
From: NORTHEAST
Just clarifying Blockmans earlier post on the shortblock he just finished for me. The heads are AFR 180 not Dart. Future plans include a head upgrade but I decided at this time to put my money into a shortblock that would take anything I could throw at it. I must say Carl does very nice work and that SHP block with the Callies rotator is a piece to behold. When I picked up the shortblock there was not a burr to be found anywhere on the block or components. Even the balancing spots on the counterweights had been champhered. Not the slap it together stuff I have experienced in the past. Nice job and thanks Carl.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Thank you,
Well, the 180cc's are for sale now and bigger ALUMINIUM 200cc are on the way home.
How about my intake.
Should I stick with the Performer RPM Air Gap?
Here is an interesting article about 383ci build with different size heads:
http://www.chevyhiperformance.com/te...est/index.html
Well, the 180cc's are for sale now and bigger ALUMINIUM 200cc are on the way home.
How about my intake.
Should I stick with the Performer RPM Air Gap?
Here is an interesting article about 383ci build with different size heads:
http://www.chevyhiperformance.com/te...est/index.html
The RPM AIr gap is a very good intake, not sure about the Performer Air gap
