Dart Pro-1 230 SBC Heads

Old 11-04-2010, 11:38 AM
  #1  
TheEngineer
Senior Member
MASTER BUILDER
Thread Starter
 
TheEngineer's Avatar
 
Join Date: Sep 2007
Location: Moore Oklahoma
Posts: 129
Default Dart Pro-1 230 SBC Heads

I'm currently running out-of-the-box, cast runner Pro-1 230 heads on my 427 SBC stroker race engine (solid-roller .700 lift, 14.5-1 compression, 2-2 1/4" step-tube Stahl headers, 1000 CFM 4150 Demon carb and Hurricane intake that I port-matched).

Using one of the on-line drag race calculators (i.e., car weight, ET and MPH), the engine is making 700+ HP at the crank. Basically, the engine is running really great and making a lot of HP (9.0s @ 150 MPH in my tube chassis car).

I've been thinking about having the Pro-1s professionally ported during the off-season to gain a few more HP. Also, adding one of the Super-Victor #2825 CNC'ed intakes, along with some additional port-matching.

Some of my race firends say, "they wouldn't change anything on the engine, because it is running so good as-is!" But, I would like to have the car running down in the 8.80 to 8.90 range and "I believe" the porting would help me move closer to those times.

So, what are your thoughts on having the Pro-1s ported and how much do you think the porting along with a CNC Victor would drop my ETs?
TheEngineer is offline  
Old 11-04-2010, 06:38 PM
  #2  
TS1955
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
Default

Just curious...what does your car weigh?

TS1955
TS1955 is offline  
Old 11-04-2010, 06:52 PM
  #3  
TheEngineer
Senior Member
MASTER BUILDER
Thread Starter
 
TheEngineer's Avatar
 
Join Date: Sep 2007
Location: Moore Oklahoma
Posts: 129
Default

Originally Posted by TS1955
Just curious...what does your car weigh?

TS1955
2340 with me strapped-in. Front-end weight is 1135 and rear-end is 1205 with a 107" wheel-base. Also, it is a Glasstek 2002 Cavalier body with 2 x 3 mild-steel chassis.

Warren
TheEngineer is offline  
Old 11-05-2010, 01:50 PM
  #4  
cncmotorsports
Senior Member
MASTER BUILDER
 
Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244
Default

Originally Posted by TheEngineer
Originally Posted by TS1955
Just curious...what does your car weigh?

TS1955
2340 with me strapped-in. Front-end weight is 1135 and rear-end is 1205 with a 107" wheel-base. Also, it is a Glasstek 2002 Cavalier body with 2 x 3 mild-steel chassis.

Warren
Warren, I would fully port the intake and see what this does first. Wilson offers this option. CNC Ported heads will also help. We send all our dart heads to Ron's porting as recommended by dart for CNC porting.

Hope this helps.
cncmotorsports is offline  
Old 11-06-2010, 06:29 AM
  #5  
TheEngineer
Senior Member
MASTER BUILDER
Thread Starter
 
TheEngineer's Avatar
 
Join Date: Sep 2007
Location: Moore Oklahoma
Posts: 129
Default

Originally Posted by "cncmotorsports
Warren, I would fully port the intake and see what this does first. Wilson offers this option. CNC Ported heads will also help. We send all our dart heads to Ron's porting as recommended by dart for CNC porting.

Hope this helps.
That sounds like a good plan, the intake first then the heads. I also like the idea of the CNC work, over hand porting if I can afford it.

Warren
TheEngineer is offline  
Old 11-06-2010, 08:35 AM
  #6  
TS1955
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
Default

I believe any time you properly cnc port a set of heads there will be an increase of power over a set of "out of the box" heads. JMO

TS1955
TS1955 is offline  
Old 11-07-2010, 06:28 AM
  #7  
TheEngineer
Senior Member
MASTER BUILDER
Thread Starter
 
TheEngineer's Avatar
 
Join Date: Sep 2007
Location: Moore Oklahoma
Posts: 129
Default

I checked-out Ron's CNC Porting Service website and it looks like he does some really top-notch CNC head work! Also, he is set-up to do 23 degree Dart Pro-1 heads!

http://www.ronsportingservice.com/index.html

Warren
TheEngineer is offline  
Old 11-08-2010, 08:15 AM
  #8  
cncmotorsports
Senior Member
MASTER BUILDER
 
Join Date: Apr 2003
Location: Brookings South Dakota
Posts: 244
Default

Originally Posted by TheEngineer
I checked-out Ron's CNC Porting Service website and it looks like he does some really top-notch CNC head work! Also, he is set-up to do 23 degree Dart Pro-1 heads!

http://www.ronsportingservice.com/index.html

Warren
We have sent a few set's over there. Very nice work.
cncmotorsports is offline  
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


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service