Engine Advice Please - Pontiac GTO Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 37 (permalink) Old 10-17-2013, 09:55 AM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Engine Advice Please

I now have my 67 GTO convertible where it steers, brakes, and handles almost as well as my modern cars. I'm much more comfortable with it's safety and reliability than when I purchased it earlier this year. Now that it's safe to drive, I'm thinking about more power so it will be a little more fun.

I want some advice on my options. My requirements are:

1. Runs on 91 octane or lower.
2. Maintains a reasonably stock appearance.
3. I'm able to run my stock TH400 and open 3.55 rear end behind it for now.
4. It is at least as fast as my daily driver and my wife's grocery hauler.
5. I don't have a budget but I don't want to brake the bank either.

I know I'll have traction issues and I will address those with a closed differential and possibley better wheel/tire combos. I just want it to be able to get me to 60 mph in 5 seconds or better.

Thoughts?
WhittP is offline  
Sponsored Links
Advertisement
 
post #2 of 37 (permalink) Old 10-17-2013, 11:45 AM
 
Red1970GTO's Avatar
 
Join Date: Jun 2011
Location: MinneSNOWta
Posts: 180
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Garage
Mill

There are any number of Pontiac Crate Engines available through Internet sales, many of them look totally stock, but have serious innards. How about a 400 stroked to 461 CID?
Red1970GTO is offline  
post #3 of 37 (permalink) Old 10-17-2013, 12:07 PM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've seen that the 461 is a popular option. The car won't see the race track but I do like to drive it pretty hard sometimes. What 461 should I be looking for? Options and rough cost?

I know there are a ton more details that need covered but I just want a starting point.
WhittP is offline  
 
post #4 of 37 (permalink) Old 10-17-2013, 03:54 PM
 
OrbitOrange's Avatar
 
Join Date: Jul 2010
Posts: 546
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
So what is the grocery getter and the daily driver that your trying to outrun?
OrbitOrange is offline  
post #5 of 37 (permalink) Old 10-17-2013, 04:34 PM
 
Instg8ter's Avatar
 
Join Date: Sep 2010
Location: Near Detroit
Posts: 3,931
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Figure in the 3-4 grand range to have a stroker built with forged rods, dished pistons, stock heads with a valve job and new springs and hardened valve seats. If you go with alum. heads add another 1500, roller cam and rockers +700

Instg8ter is offline  
post #6 of 37 (permalink) Old 10-18-2013, 08:38 AM
Super Moderator
 
BearGFR's Avatar
 
Join Date: Aug 2008
Location: Springtown, TX
Posts: 5,742
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 122 Post(s)
Garage
Hey Whitt, I see you're in Frisco. I live in Garland, and I built my original 400 in my GTO into a 461. Perhaps we can get together and let me give you a "demo" some time.
There's a car show this Saturday morning/afternoon (10/19) in Rowlett - sponsored by Dickey's BBQ. I'm planning to be there. I"ve got a black '69.

Oh... and my best quarter-mile e.t. to date is 11.86. 0-60 times, best as I can estimate, are in the vicinity of 3.5 seconds

Bear

BearGFR
Springtown, TEXAS
BearGFR is offline  
post #7 of 37 (permalink) Old 10-18-2013, 09:08 AM
64-67 Expert
 
geeteeohguy's Avatar
 
Join Date: Feb 2008
Location: Fresno, California
Posts: 8,543
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 118 Post(s)
......and it can whoop a Curtiss P-40 Warhawk in a drag race, too! Not bad for a stock-block old Pontiac.
geeteeohguy is offline  
post #8 of 37 (permalink) Old 10-18-2013, 12:33 PM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My driver is a 2007 Inifiniti G35 Sedan and my wife drives a new Ford Explorer. Not super fast cars by any means but both have more giddyup than my Pontiac right now. I used to own a 2002 Z06 Vette and that would put a smile on my face. Bear your car is faster than my Vette was - I didn't realize you could make these old Pontiacs that fast without some serious mods! Instag8tr that is what I was expecting but when I look at some of these places online they want upwards of $10k! I'd love to get it done locally - Bear can you make some recommendations?

I'd also take you up on your offer this weekend but the car will be in our local neighborhood show on Saturday. I bet we can get together soon enough though.

Thanks for all this info guys.
WhittP is offline  
post #9 of 37 (permalink) Old 10-18-2013, 12:55 PM
 
Bensjammin66's Avatar
 
Join Date: May 2009
Location: Shalersville, Ohio
Posts: 322
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by Instg8ter View Post
Figure in the 3-4 grand range to have a stroker built with forged rods, dished pistons, stock heads with a valve job and new springs and hardened valve seats. If you go with alum. heads add another 1500, roller cam and rockers +700
I'd like to know where you found aluminum heads for $1500.. or a roller cam/lifter set and rockers for $700!

You outta see her on a road course, or a quarter mile
Bensjammin66 is offline  
post #10 of 37 (permalink) Old 10-18-2013, 01:05 PM
 
Bensjammin66's Avatar
 
Join Date: May 2009
Location: Shalersville, Ohio
Posts: 322
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Quote:
Originally Posted by WhittP View Post
I look at some of these places online they want upwards of $10k!
Id hate to say it man and several would like to crucify me for saying it but... If you wanna go quick and do it cheap its hard to do with a Pontiac and you might wanna look into, gulp, a well built alum headed sbc.. sbc parts are damn near free if you hang around lots of car guys. And by cheap I mean under 5k. Now, you can build a 455 torque monster for $5000 easily if using well equipped stock rods and a stock crank. Saves ya money on the stroker kit.

Though you said you would like to keep your th400 you might wanna consider an OD tranny like a 5 or 6 speed also. That alone coupled with some 4.10/3.90 gears will make a world of difference. I went from 3.08s and a TH350 to 3.73s and a TKO600 and WOW!! All of the sudden i LOVED the street manners of my 47 year old hot rod. Even running high 13s with my old combo it felt way faster than that and is ALOT of fun bangin gears around town.

You outta see her on a road course, or a quarter mile
Bensjammin66 is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user 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:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
455 Crate Engine Advice smcconkey 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 10 02-17-2013 10:37 AM
70 Lemans Engine Swap Advice VT Lemans 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 1 03-07-2010 10:24 PM
Engine Swap advice All numbers matching car Dirty Deeds 1964-1974 Tempest, LeMans & GTO Data Plate, Vin Tag and Drive Train Numbers 11 02-04-2010 12:07 PM
comparison the "cant break 8s" b4 advice and after the advice DK2F Service, Maintenance and Technical Discussion 0 02-11-2006 03:09 AM

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

 
For the best viewing experience please update your browser to Google Chrome