'67 Camaro, 327 rebuild for gas mileage - Help - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 05-22-2008, 05:21 AM
cowbay's Avatar
Registered User
 
Join Date: Apr 2008
Location: westbury, ny
Age: 48
Posts: 61
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
To be honest if you rebuild the motor to almost orgional specs and drive the car easy you will get pretty good gas mileage out of old technology. I rebuilt the motor on my 63 impala with a 327 back in 82. The motor was built to 300HP specs. I have a 600 CFM holley carb and only 2 years ago converted the ignition to pertronix from points. Also I see another post in regards to small valves, this car has the 2.02 fuelie heads on it. The car has a M20 4 speed and 3.36 rears. I have over 150,000 miles on this motor since I rebuilt it. This car wieghs with me in it almost 4,000lb. When the care is driven easy not stomping on the pedal the car will get 15-16 miles around town and on the highway she will gets between 21-22 miles cruising at 70-75 mph. One time on a trip from NY to Rhode Island with 3 passangers the car got 23 1/2 miles to the gallon. Also I take this car to the track from time to time. While by no means a fast car, it still runs in the high 14's. To sum up what I am saying is that if you don't go crazy on the rebuild and drive it with some common sense you will get a great return on mileage. As for fuel injection and the overdrive transmissions while there is something to be had out of that there is the cost factor, is it going to bring you that much in return of mileage to pay for itself in the next 5-10 years.
Another example of good mileage out of stock equipment is a own another boat a 59 ford galaxie with a 292 and a 2 speed automatic all stock and it gets even better mileage around town no less than 16, while highway is about the same.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 05-22-2008, 05:21 AM
cowbay's Avatar
Registered User
 
Join Date: Apr 2008
Location: westbury, ny
Age: 48
Posts: 61
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
To be honest if you rebuild the motor to almost orgional specs and drive the car easy you will get pretty good gas mileage out of old technology. I rebuilt the motor on my 63 impala with a 327 back in 82. The motor was built to 300HP specs. I have a 600 CFM holley carb and only 2 years ago converted the ignition to pertronix from points. Also I see another post in regards to small valves, this car has the 2.02 fuelie heads on it. The car has a M20 4 speed and 3.36 rears. I have over 150,000 miles on this motor since I rebuilt it. This car wieghs with me in it almost 4,000lb. When the care is driven easy not stomping on the pedal the car will get 15-16 miles around town and on the highway she will gets between 21-22 miles cruising at 70-75 mph. One time on a trip from NY to Rhode Island with 3 passangers the car got 23 1/2 miles to the gallon. Also I take this car to the track from time to time. While by no means a fast car, it still runs in the high 14's. To sum up what I am saying is that if you don't go crazy on the rebuild and drive it with some common sense you will get a great return on mileage. As for fuel injection and the overdrive transmissions while there is something to be had out of that there is the cost factor, is it going to bring you that much in return of mileage to pay for itself in the next 5-10 years.
Another example of good mileage out of stock equipment is a own another boat a 59 ford galaxie with a 292 and a 2 speed automatic all stock and it gets even better mileage around town no less than 16, while highway is about the same.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 07-31-2008, 12:27 PM
Registered User
 
Join Date: Jul 2008
Location: TX
Posts: 1
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
While I don't have the knowledge to fill my post with heaps of specs and such, I can share what experience I have here. I've driven several SBC powered vehicles, but the one that comes to mind here is the 74 1/2 ton pickup I had just before I got married. It had a fairly stock but well-built 350 and stock TH350 trans. If I remember right, I ran that engine a good 100k miles and it still ran great when I sold it. When I first put the engine together, it was my toy, so I went overboard with the cam and carb. It had lots of power, but the holley carb was trouble to keep running, and it sucked a lot of gas. After I was married, it went from toy to daily driver status, and cash flow was severly cut. So began my quest for gas mileage. I tried several cams and ended up with a remake (by Crane?) of the 300hp 327 cam. For carb, I ran a stock Q-Jet with slightly smaller jets (typically used with 305 engines) and an extra tall open filter. The intake was a weiand (action plus?) that was close to stock intake. I ran one of those big accel super hei coils with stock hei distributor that I had recurved myself (trial & error). Exhaust was hooker headers and generic turbo mufflers and 2 inch pipes all the way out the back. I can't remember what kind of fan it had for sure, but seems like it was stock with fan clutch. Also, I had the alternator retrofitted with larger than stock pulley - slows alternator rpm and decreases alternator load.

Out of all the tweeks and mods I did to gain gas mileage, I think the one thing that made the most difference was when I put torque-plus intake gaskets on it. These have a screen across the intake opening. Maybe not so good for a high rpm engine, but they really improved bottom-end. Jegs used to have them for SBC, but I only saw for Chrysler now.

Anyways, to sum it up, this pickup used to get 20-25 mpg highway without an overdrive trans or electronic fuel injection. I could see possible better mileage out of a Camaro with a similar built engine simply because of aerodynamics.

Oh, and don't go overboard on high rear-end gears. When I bought this pickup, it had really high gears (2.90 or something) that really bogged it down. I found a rearend with original locking diff and 3.55 or so gears in a salvage yard and swapped it out. The lower gears actually increased gas mileage, probably because I wasn't into the gas as much to get it to accelerate. Also, though take into consideration this was a pickup with A/T tires that were probably a lot taller than what you have on your Camaro...
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 08-04-2008, 11:41 AM
Registered User
 
Last photo:
Join Date: Apr 2007
Location: Seattle, Wa
Posts: 7,078
Wiki Edits: 0

Thanks: 4
Thanked 535 Times in 452 Posts
Quote:
Originally Posted by snesral
After I was married, it went from toy to daily driver status, and cash flow was severly cut.
Once again a Hot Rodder proves that the old addatage, "two can live as cheaply as one", is pure bunk.

Bogie
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 08-04-2008, 03:54 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,278
Wiki Edits: 326

Thanks: 827
Thanked 1,141 Times in 940 Posts
They can, if one of them doesn't eat.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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

Posting Rules
You may post new threads
You may 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
Front seats in 67 camaro ernkazern Interior 5 10-03-2007 02:45 AM
67 camaro swap 72 nova std. steering box digger67 Suspension - Brakes - Steering 1 10-14-2006 09:58 PM
Stolen 67 Camaro gilloz Introduce Yourself 3 08-21-2006 10:41 AM
A kids dream car. Now it's mine 67 camaro Deon Shouse Introduce Yourself 3 04-01-2006 05:59 PM
67 camaro power steering 67rscamaro Engine 2 03-26-2003 06:12 AM


All times are GMT -6. The time now is 01:57 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.