Super Chevy
Click here to find out more!

stock 327

  
Super Chevy
Item Posts    Sort Order

stock 327

 
rooky67 rooky67
I love my Chevy Chevette! | Posts: 3 | Joined: 11/12
Posted: 11/25/12
03:23 PM

Hello everyone this is my first post so here I go, I have a 1967 Impala with 327 stock engine in it and was trying to make it more drivable i like to change the stock heads and cam for a better one. I've read some old post here and most of them sugested the vortex heads and a sort of diferent cams but what i read was 4-5 years old is this heads still the more usedfull for the swap? Or if any of you guys know of a resent heads and cam kit will sure apreciated. I'm not worry about making alot of horse power yet just want the engine to run more eficient.

Thanks in advance
rookye67  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 11/25/12
11:44 PM

Welcome to Super Chevy rooky67:

Yeah on our sister magazine CHP. there are a couple guys right now that are doing that swap. What you need to do once you've decided what head your going to use, make a list of the following.

Your welcome in advance

First off How many miles are on your engine?
Trans type Power Glide, TH350 or 4 speed
If you know you rear gear ratio
How tall are your rear tires
What will you be using your car for. IE daily driver, street/strip etc.
This way we can help you pick out the best parts to help you.

Bob  

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 11/27/12
08:31 PM

Before you think about adding on some horse power goody's. Do a compression Check and leak down test on your engine.
  You really need to know what if the bottom end will be worth your money building up. This way you'll know what you have to do. If the Rings don't seal the power will never be up to it's potential.

Bob  

68scott385 68scott385
I have an SS396 tatoo | Posts: 325 | Joined: 07/09
Posted: 11/27/12
09:42 PM

...not to mention use/burn oil like the Exxon Valdez...been in that boat myself  
68scott385 68scott385 68scott385

rooky67 rooky67
I love my Chevy Chevette! | Posts: 3 | Joined: 11/12
Posted: 11/29/12
07:37 PM

The engie was rebuilt 2 years ago and has 7 thousand miles on it, As far as the gear ratio I have no idea yet im working on that. The transmission its a stock two speed powerglide, the compression still good had that checked. Another question I have is, Do i have to buy different push rods to go with the swap or use the same ones i have now?  Im sorry for not answering sooner was giving it some time to get a few answers. Thanks for the help everyone.  

68scott385 68scott385
I have an SS396 tatoo | Posts: 325 | Joined: 07/09
Posted: 11/30/12
09:06 AM

It's always advisable to check pushrod length when doing head or cam swaps. Your stock pushrods would be a good place to start checking but there are no gaurantees they WILL or WON'T be the right length.  
68scott385 68scott385 68scott385

pepsi1 pepsi1
Big Block power for the win | Posts: 940 | Joined: 03/11
Posted: 12/01/12
02:02 AM

Rooky67

  Just roll your push rods on a flat surface. If they roll flat with NO HIGH spots in them you can reuse them. If any are bent replace them all.
  The Voretc Heads will only need to be clearanced if your using a cam over .500 lift. The valve springs are also good to .530 lift. I've speced out a couple cams for you and there is one I really like. You can use them with a stock torque convertor and A/C.
  When you order an intake manifold make sure you purchase one for the Vortec heads, They have a different intake bolt set-up.
  If you need a carb a 600 to 650 CFM vacuum secondary, with an electric choke will do.

  Lunati has a cam kit I think is the best for your street application. With your power glide only being a 2 speed trans. You do need atleast a 3:50 to 3:70 Rear Gear will complement the cam and Vortec heads very well.

Lunati Voo-Doo Cam and Lifters Kit. P/N 10120701LK.
      Specs are .213/.219 dur.@.050  .454/.468 1,000 to 5,500 RPM Range.
      112* Lobe seperation 108* Intake Center/Line With 19" of vacuum at an idle.
Run your stock torque convertor. You can run a stock exhaust. But a nice true dual exhaust, and you will really see the perforamnce, for that nice Street Rod Lopey idle as on the old Muscle cars. This cam has a little more lift and a little less dur. then the Factory 350/327. Needs a 3:50 to 3:70 rear gear. It will sit you in the back seat.

Bob  

redneckjoe69 redneckjoe69
Everything in my driveway’s a Chevy | Posts: 612 | Joined: 02/10
Posted: 12/02/12
07:12 AM

dart and edelbrock sell top end kits with all the parts you need, heads, cam, timing chain, gaskets, etc.    it might be worth looking into?    stock, unmodified vortec heads are only safe to run about .450 lift before the retainers hit the guides.    heres a link to an article about vortec heads.
http://www.chevyhiperformance.com/techarticles/148_0208_vortec_heads_valve_lift/viewall.html  

tuffnuff tuffnuff
Moderator | Posts: 268 | Joined: 01/10
Posted: 12/02/12
08:04 AM

Joe, the retainer will kiss the stem seal, which sits on top of the guide on Vortec heads.

Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

Pontiacman2 Pontiacman2
Big Block power for the win | Posts: 891 | Joined: 01/08
Posted: 12/02/12
06:14 PM

+1  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

tuffnuff tuffnuff
Moderator | Posts: 268 | Joined: 01/10
Posted: 12/02/12
06:41 PM

Howdy Pman.,. you always seem to agree with facts.

Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

rooky67 rooky67
I love my Chevy Chevette! | Posts: 3 | Joined: 11/12
Posted: 12/04/12
09:16 PM

Thank you all for the input, I'll post pics of the car. I just finished the body work and got it primerd last week geting ready to spray the charcoal grey with black accents such as the windows chrome moldings, bumpers, front grill and back light chrome moldings hope you guys like the work, either way positive and negative opinions are all welcome. One more thing that I was contemplating on is a different transmission I have a 700R4 out of a 1985 corvett  What's your input on that guys? Once again thank you all and superchevy for all the replys. I will post the pics this weekend coming up.  

68scott385 68scott385
I have an SS396 tatoo | Posts: 325 | Joined: 07/09
Posted: 12/04/12
09:57 PM

The early 700s are weak. I personally would keep it but upgrade it. Not everyone feels the same way.

There is a thread at the Chevy High Performance forums that tells the differences between the 700r4 and the 200-4r. Read that and feel comfortable about your decision. Both can be built to handle gobs of power.  
68scott385 68scott385 68scott385

68scott385 68scott385
I have an SS396 tatoo | Posts: 325 | Joined: 07/09
Posted: 12/04/12
10:00 PM

Here is the link to the forum thread...

http://forums.chevyhiperformance.com/70/9344556/general-discussion/700-r-4-200-4-r-transmissions/

Here is a site that can supply parts, advice, and more...
I suggest reading the TV Cable article(s)...major important information

http://www.bowtieoverdrives.com/index.shtml  
68scott385 68scott385 68scott385