Proper Q-jet for 400cui? - Page 2 - Pontiac GTO Forum
Pontiac GTO Pontiac GTO Forum

» Auto Insurance
Wheel & Tire Center

Go Back   Pontiac GTO Forum > The 1964-1974 Pontiac GTO > 1964-1974 Tempest, LeMans & GTO Technical Discussions
Register Home Forum Active Topics Photo Gallery Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

GtoForum.com is the premier Pontiac GTO Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-25-2013, 03:32 PM   #11 (permalink)
 
SPCMarty's Avatar
 
Join Date: Jul 2011
Location: Duluth MN
Posts: 188
My Photos: (0)
Proper Q-jet for 400cui?

Well I managed to find an 800cfm pontiac type qjet. I have a number of chevy type 750 qjets at my disposal as well.
I think I will get that book on carbs, I imagine it could help me a lot.
I have the performer intake right now on it, would I have the clearance if I got a performer rpm to match the 1300rpm cam?


Sent from AutoGuide.com App
__________________
1971 LeMans 350ci 2Barrel Carb

B. Co 1-22 4ID OIF 2008-09
SPCMarty is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-25-2013, 06:14 PM   #12 (permalink)
Super Moderator
 
ALKYGTO's Avatar
 
Join Date: Mar 2010
Location: Wentzville, Mo.
Posts: 2,369
My Photos: (6)
Garage
IMO I think you should take it one step at a time. Being as you already have the performer I think you would be wasting money at this point on the RPM.

Get your current combo dialed in before you make any other changes. I'll tell you from experience that you can waste a lot of time and money looking for that next 5 hp.

Spend the money on a dyno session with an experienced dyno operator and you'll be wiser and happier. You'd be surprised at how much HP you can find on a dyno. I've seen cars pick up as much as 50+ hp at the wheels with tuning alone not to mention improved driveability and mileage. Just my 2 cents.
__________________
ALKYGTO is online now   Reply With Quote
Old 02-26-2013, 04:25 PM   #13 (permalink)
 
SPCMarty's Avatar
 
Join Date: Jul 2011
Location: Duluth MN
Posts: 188
My Photos: (0)
Proper Q-jet for 400cui?

Alright I'll slow it down and work with what I got. Perhaps a dyno session would be beneficial once it's well broken in.
Can anyone provide a diagram that shows what each vaccum port on a qjet is for? I've only had the edelbrock carb.


Sent from AutoGuide.com App
__________________
1971 LeMans 350ci 2Barrel Carb

B. Co 1-22 4ID OIF 2008-09
SPCMarty is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac GTO > 1964-1974 Tempest, LeMans & GTO Technical Discussions


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
proper painting procedures par4n1 1964-1974 Tempest, LeMans & GTO Restoration Discussions 4 02-02-2013 09:22 PM
Need help with chosing proper Offsets GTOMOE9 Wheels and tires 1 07-25-2012 12:27 PM
400cui with 455cui heads? Chris-Austria 1964-1974 Tempest, LeMans & GTO Technical Discussions 4 06-01-2012 09:03 AM
TH200-4R strong enough for 400cui 66MichiganTempestC 1964-1974 Tempest, LeMans & GTO Technical Discussions 4 03-08-2012 03:45 PM
1977 400cui worth it to swap with my 350 lemans SPCMarty 1964-1974 Tempest, LeMans & GTO Technical Discussions 69 03-07-2012 04:24 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 04:07 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.