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SBC Vortec Upgrade

  
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SBC Vortec Upgrade

 
bigdee2 bigdee2
User | Posts: 54 | Joined: 12/10
Posted: 03/11/13
07:56 AM

1991 Block
383 Stroker
Comp Cam .480/.480"   232 degrees of duration
GM 12558062 Iron Vortecc Heads - cleaned up and re-worked with some stage 2 porting
1.94 / 1.50  64cc   175cc intake runners
10.0: 1 compression
Did 287 HP and 307 TQ on the Chasis Dyno at 5,700


Would there be a possible noticeable gain from going with larger vortec heads such as the Summit Iron 2.02 Vortec heads or the Edelbroc E-Tec Aluminum 2.02 heads on this build?  

68scott385 68scott385
Guru | Posts: 1990 | Joined: 10/09
Posted: 03/11/13
08:35 AM

The Edelbrock E-tec line of heads are an entry level, not much of a step above the Vortec, heads. The size of the valve won't gain as much as the size/flow potential of the port.

There would be a more noticable gain by going to a bigger set of aftermarket heads in the 195cc neighborhood. I like AFRs but Dart, RHS, and World Products offer good heads too. Be wary of ProComp heads. The price is cheap for a reason.  
68scott385 68scott385 68scott385

redneckjoe69 redneckjoe69
Addict | Posts: 2337 | Joined: 03/10
Posted: 03/12/13
11:04 AM

i kinda think the vortecs are holding back your 383, especially with smaller valves.   id consider some better flowing aluminum heads, and that cam will probably come to life?    the vortecs are more of a torque, lower rpm head,...possibly evident by your numbers with the motor making more torque then HP with that cam?      just my thoughts.  

xFourLeaf xFourLeaf
User | Posts: 62 | Joined: 01/13
Posted: 03/12/13
02:06 PM

+1 redneck
Better flowing heads should bring in some more horsepower, not to mention you would drop about 50# in the front end switching to aluminum.  
xFourLeafxFourLeaf

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 03/12/13
10:59 PM

Hi there,
TFS 195 heads will do it all aand No machining @ that lift..
They worked for me very well..All the best..Skyeking  
skyeking

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 03/13/13
08:56 AM

The one thing I would add is this. If you are
going to work your truck as a hard working truck
I would stay with an Iron Head. They dissapate
heat a lot quicker and can take a little more
punishment then an aluminum head. Just my 2 Cents.

Bob  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 03/13/13
04:31 PM

Hi Agent 69,
 You have it all together,,,,,,,,AGAIN.
 Stay safe OLDE Timer.Or is that EGG timer??.  
skyeking

redneckjoe69 redneckjoe69
Addict | Posts: 2337 | Joined: 03/10
Posted: 03/15/13
05:06 PM

howdy Skye!
       hoping things are best as they can be for you mate. Confused
              wherever we go, there we are.
                   prayers are sent my friend.
                               joe  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 03/15/13
05:33 PM

Thanks Joe and all the others,
The Liver Job will be like Omaha Beach @ 1944.
The Lungs will be like a pistol duel with
blindfolds at 100 yards.All the best...Noel..  
skyeking

Dave632 Dave632
Addict | Posts: 2225 | Joined: 07/08
Posted: 03/15/13
07:45 PM

Hope your not fighting against Wyatt Earp Skye!!
Good luck in your battles.

Dave  
[[SUPPORT AMERICAN CARS, STOMP A RICE CAR TODAY.]]

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 03/16/13
04:14 PM

Noel
Sounds to me like the Drs. need
a Muskatoon to get all the holes
plugged, my dear friend. You know
our prayers are with you. Noel
please send me the info if you
can....Take Care.

Bob  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 03/18/13
04:32 PM

Hi People,
The Drs. are Clowns who cannot set a date for the battles
and are sucking the system dry for more dough...All the best..  
skyeking

Dave632 Dave632
Addict | Posts: 2225 | Joined: 07/08
Posted: 03/18/13
04:35 PM

You have to be careful with doctors. Some of them are just in it
to make the most money they can and they care little about your
problems. If you find a good one stick with him.  
[[SUPPORT AMERICAN CARS, STOMP A RICE CAR TODAY.]]

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 03/19/13
04:10 PM

Hi People,
One cynic wrote on the I/Net...
They will keep you alive while you have enough money..
Dioginis of Sinope would have loved him!!!  ...Noel  
skyeking