Pontiac Street Performance
Home | Profile | Register | Active Topics | Members | Search | FAQ
Save Password

 All Forums
 Pontiac Performance
 Tempest / Lemans / GTOs
 Help me with my 69 GTO
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Tribal Scout

10 Posts

Posted - 28 Dec 2014 :  01:56:16 AM  Show Profile  Reply with Quote
400 motor TH400 w 2000 stall 3:42 gears headers Holley 750dp Summit 2802 cam. Starts on first crank revs great on park but will not do burn out n falls on its face on take off. I dont want to race but do expect a burn out. What can I do?

Blued and Painted

3458 Posts

Posted - 28 Dec 2014 :  10:36:12 AM  Show Profile  Reply with Quote
Sounds like not enough accelerator pump shot from the holley and/or low ignition timing.

Stall speed could be higher. 23 or 2500. Check with cliff and see if the Continental jim hand special is right for you.

Bull Nose Formula/ 461/ Q-Jet/
TH400/ 3.08 8.5 / R44TS.

Edited by - Blued and Painted on 28 Dec 2014 10:38:20 AM
Go to Top of Page

Crazy Horse

1442 Posts

Posted - 28 Dec 2014 :  10:56:02 AM  Show Profile  Reply with Quote
I agree on the stall speed being too low.

I have the 2801 Summit in my 400 and it wants more stall than what the current 2000 RPM unit I have in it now. It doesn't fall on its nose on take off though.
Go to Top of Page


5390 Posts

Posted - 28 Dec 2014 :  11:27:06 AM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
Double check the timing as Blue mentioned, and look down the carb to see if the accel shot is clear and firm, not leaky or sputtery or non-existent. Both free 5 min tests.
Go to Top of Page

Sitting Bull

80 Posts

Posted - 03 Jan 2015 :  3:20:34 PM  Show Profile  Reply with Quote
What tires do you have? Aggressive tires like street slicks you will need more stall if you haves street tires it should burn all through first gear. Try bigger pump nozzle.
Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
Pontiac Street Performance © 2006-2017 Go To Top Of Page
This page was generated in 0.08 seconds. This Site Sponsored By:
Powered By: Snitz Forums 2000 Version 3.4.05