Help Me Design My Chevelle - Chevelle Tech
Performance Our High Performance area

 16Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 19 (permalink) Old Mar 12th, 20, 12:14 PM Thread Starter
Pat
 
Join Date: Jan 2019
Location: Buffalo NY
Posts: 11
Help Me Design My Chevelle

All,

Let me start off with a little background. I have purchased a '71 Chevelle that was in pieces in December of 2019. The car was a plain Jane Malibu with a 350, TH350 and a 10 bolt. I purchased the car less the trans and engine knowing that I would be going with a big block. I am finally getting ready to work on the car in the next few weeks after carefully inventorying all of the parts and finishing my new build garage/shop. With this said I am in the planning stages and could use some input as well as the expertise and input from this group. Hopefully, I'll get a build thread up and going soon as well. Here is my goal for the car. I'd like to have a very clean street/strip car (70% street/30% strip). I'd like the car to be able to run mid to high 11's or low 12's. Some other basic info, planning on a building a 496 with a turbo 400 and a 12 bolt. I can get into details such as the engine combo and things like the torque converter later, what I'd like to know now is the following: What chassis or frame upgrades have you done such as speed tech frame kits if any? Should I stick with factory disc/drum brakes or upgrade to 4 wheel disc? Should I upgrade rear trailing arms to tubular/adjustable? Tubular upper and lower A-Arms? Based on the engine and trans combe what rear end gear?

Thanks in advance looking forward to seeing the input/advice.
71496Chevelle is offline  
Sponsored Links
Advertisement
 
post #2 of 19 (permalink) Old Mar 12th, 20, 12:58 PM
Senior Tech Team
 
Join Date: Dec 2005
Location: Lancaster, PA
Posts: 11,157
Re: Help Me Design My Chevelle

You could basically hit your goal with a stock chassis Chevelle and a 496. Anything else is your preference. If it was me, it would be factory disk/drum, factory boxed rear arms, and do the drivetrain.
mr 4 speed, 427L88 and RAIDER SS like this.
bracketchev1221 is offline  
post #3 of 19 (permalink) Old Mar 12th, 20, 4:23 PM
Senior Tech Team
Rick
 
Join Date: Jan 2010
Location: Michigan
Posts: 1,649
Re: Help Me Design My Chevelle

Pretty much what is stated above.
Why not a 427 - 454 ?


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
mrpaticular is offline  
 
post #4 of 19 (permalink) Old Mar 12th, 20, 7:36 PM
Senior Tech Team
Greg.
 
Join Date: Apr 2011
Location: Ottawa, On, Canada
Posts: 5,205
Garage
Re: Help Me Design My Chevelle

Here is a list of what I have done to my 67 to make her run in the mid 11s so far ;
By buying great parts from https://www.umiperformance.com/home/...-67-gm-a-body/
SUSPENSION
FRONT
1. replaced the Stock Control Arms with these UMI Perf 64-72 GM A-Body Tubular Upper & Lower Front A-Arm Kit # 403133 also make sure the Control Arm Nuts are not to tight after so that the Arms are loose/move easily & Double Nut if needed
2. UMI Perf 64-72 GM A-Body Tie Rod Adjusters # 2103
and from JEGs
3. replaced the old Stock Coil Springs with Moroso # 47195 250 lb Trick Springs http://www.jegs.com/i/Moroso/710/47195/10002/-1
with a Rubber Spacer under them JEGs # 555-60830 1" Lift x 4"ID x 6"OD/U-CrossSection http://www.jegs.com/i/JEGS-Performan...60830/10002/-1
4. Comp Eng 3 Way Shocks# 2610 Set at 80/20 http://www.jegs.com/i/Competition-En.../2610/10002/-1
5. replaced the front Manual Drum Brakes with SSBC # A123 Conversion Kit and Longer Studs
6. Front Street/Track Wheels & Tires = JEGs SportStars#66062 1 piece Alum 15”x7” BS 4” / Lug Nuts Billet Sp ET # 999980 / Cooper StarFire SF 340 P205/70R/15” TreadWidth 5.59”/SideWallsWidth 8"/ Dia 26.28"
REAR
1. UMI Perf 64-67 GM A Body Rear Lower Boxed / Adj Upper Control Arms kIT # 402126
2. UMI Perf 64-72 GM A Body Solid Front and Rear Sway Bar Kit # 403534
3. UMI Perf Rear Frame Cross Brackets
4. replaced the old Stock Coil Springs with new Moog Stock type ones and installed these Air Lift 1000 Air Bags # 60744 in them at the Track you put air in them to force the Tires into the pavement + make the car Launch straight
5 to 10 lbs in the Passengerside and 0 to 5 lbs in the Driverside
5. Rear Wheels/Tires for Street/Track JEGs SportStars# 66086 1 pieceAlum 15”x10” BS 5.5” / Lug Nuts Billet Sp ET # 999980
/ M/T ET Street S/S # 3454 295/55/15R Tires TreadWidth 10.6” / SideWallsWidth 12.2"/ Dia 27.8"

DRIVETRAIN
Engine = 454/468 500+ HP
Trans = Th400 RMVB with 3,500+ rpm Stall Converter
3" Steel Driveshaft 1350 U Joints
Strange S60 Rear End True Trac Posi with 3.70 Ratio Gears

At the Track
At the lights I leave/take off Idle that way I do not loadup the Rear Suspension
Rear Air in Tires varies from 17 to 20 psi dependent on temperature and Track Prep
See my Sig for Times
This is the Frontend lift you want



true136 likes this.

67 Chevelle Malibu SS Cdn
Born 283 / PG / A51
468/TH400 2,500 stall/ S60 3.70 Gs
Prev Best on M/T ET S/S #3454 street Tires/Dress 2018/05/20
60' = 1.664
1/8 = 7.532 et / 91 mph
1/4 = 11.814 et / 115 mph
NEW Best with 3,500+ Stall TC 2019/09/08
60' = 1.547
1/8 = 7.311 et / 91.76 mph
1/4 = 11.595 et / 114.28 mph


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Kirk's67SS is offline  
post #5 of 19 (permalink) Old Mar 13th, 20, 8:06 AM
Senior Tech Team
Jeff
 
Join Date: Jun 2009
Location: Pittsburgh, Pa.
Posts: 2,733
Re: Help Me Design My Chevelle

Keep it simple as possible with the least amount of parts..
RAIDER SS and mrpaticular like this.
hydro462 is offline  
post #6 of 19 (permalink) Old Mar 13th, 20, 8:42 AM
Senior Tech Team
Rick
 
Join Date: Jan 2010
Location: Michigan
Posts: 1,649
Re: Help Me Design My Chevelle

Simple is good for most 12.0 cars.
I ran into the 11's with a 355 and 4 speed. Only had morose front springs and 90/10 shocks. South side lower control arms with 3 way shocks. That was it. What you do need to do is make sure it is safe. Larger u joints and safety loop. Disc / drum is fine.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
mrpaticular is offline  
post #7 of 19 (permalink) Old Mar 13th, 20, 8:52 AM
Tech Team
mark
 
Join Date: Mar 2009
Location: Mesa, AZ
Posts: 802
Re: Help Me Design My Chevelle

If you want to have lots of fun, ditch the auto trans, and put a stick in it, with 4:10's and a 28" tall sticky tire.

1969 Chevelle
412 small block
M-20 4spd
4:10 12 bolt
Sold, went to Sweden

1957 Thundarbird Gasser
Aluminum Shafiroff 582
Richmond 6spd
4:33 59 Olds rear
Dads old race car
He bought it in 1967

1967 Camaro
355 small block
M21 4spd
4:88 12 bolt spool
40yr old drag car
barn find in south PHX AZ
marks412 is offline  
post #8 of 19 (permalink) Old Mar 13th, 20, 9:38 AM
Senior Tech Team
Rick
 
Join Date: Jan 2010
Location: Michigan
Posts: 1,649
Re: Help Me Design My Chevelle

Sticks are absolutely fun in a street car. At the track with sticky tires their live span is much shorter than automatics. At 30% track use, OP would need to go to a modern trans which would mean $$$$. I had 4 speeds until this automatic. Broke and fixed several. Still have all my 4 speed things.
Nothingbut69 likes this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
mrpaticular is offline  
post #9 of 19 (permalink) Old Mar 13th, 20, 9:05 PM
Lifetime Premium Member
MARK
 
Join Date: Jul 2007
Location: CO/TO
Posts: 4,399
Re: Help Me Design My Chevelle

My summer project is to put a hyd roller pump gas 454 in my 1979 Big 10 half ton long bed truck, the goal is a 11 sec truck with a 3.07 gear. Going to be interesting.
427L88, Pat_McNeil, rjt427 and 1 others like this.

Machined GM production heads
Oil pan modifications
Red Line Camshaft
VORTECPRO is online now  
post #10 of 19 (permalink) Old Mar 13th, 20, 10:33 PM
Senior Tech Team
Eric
 
Join Date: Sep 2011
Location: wisconsin
Posts: 1,980
Re: Help Me Design My Chevelle

I have an oval port 468 with a Straub hydraulic roller, 781 heads, Stealth intake, TH400, 3500 stall and 3.73 gears in my 66 Chevelle. The car is totally streetable and runs consistent mid 11's. The only thing I would change if I did it again is make it a 496. I have a 540 in another Chevelle, but the 468 is more fun on the street and was WAY cheaper to build.
Kirk's67SS likes this.
dell72 is offline  
post #11 of 19 (permalink) Old Mar 14th, 20, 7:10 AM
Team Member
Mark
 
Join Date: Dec 2007
Location: Tampa, FL
Posts: 1,182
Re: Help Me Design My Chevelle

Here's a few high-impact changes I've made to my 250 Malibu that I've put over 250,000 miles on:

1) Chassis - I wished I did the frame boxing kit and body bushings 1st. I used a kit from ABC for the frame (https://www.abcperformance.net/store/. You might have to reinforce some of the bushing attachment points if too rusty.

2) Front suspension geometry - I have the cpp big brake kit (https://www.classicperform.com/chevelle.htm. It requires 17" wheels. If you don't want to go to 17" fronts, the biggest change is from the front upper control arms, where aftermarket ones (like Global West or SpeedTech) give you a lot more caster (keeps the car going straight).

3) Rear end suspension - Boxing the lowers adds a lot of stiffness at a low cost. Tubulars are nice too. I have my lowers boxed and UMI adjustable uppers.

4) Brakes - 4 wheel discs are best but the biggest improvement comes from the front discs.

5) Springs/Shocks - The right spring/shock combo will really help the ride. Adjustable shocks give you more flexibility if you're using your car for a different things.

This list could get out of control, but these are 5 things I wish I had done right off the bat (but I was obsessed with losing the 250!).
Kirk's67SS likes this.

69 Chevelle Malibu
427 sbc, TH400, 3.55 12-bolt
n/a best: 11.24sec/118mph
MadmanMark is offline  
post #12 of 19 (permalink) Old Mar 14th, 20, 7:44 AM
Team Member
Mark
 
Join Date: Dec 2007
Location: Tampa, FL
Posts: 1,182
Re: Help Me Design My Chevelle

Wanted to add one - don't forget about the driveshaft/u-joints. This can take out lots of other stuff if you wait until it goes.
Kirk's67SS likes this.

69 Chevelle Malibu
427 sbc, TH400, 3.55 12-bolt
n/a best: 11.24sec/118mph
MadmanMark is offline  
post #13 of 19 (permalink) Old Mar 15th, 20, 10:47 AM
Senior Tech Team
Rick
 
Join Date: Jan 2010
Location: Michigan
Posts: 1,649
Re: Help Me Design My Chevelle

Muscle car brakes liners for the drums. I have 4 wheel drums and they work great. Never had any problem slowing down for the return road. They foot break great for burnouts. $200 or so for the rear or front. The guy said he can make them for any vehicle.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
mrpaticular is offline  
post #14 of 19 (permalink) Old Mar 16th, 20, 10:05 AM Thread Starter
Pat
 
Join Date: Jan 2019
Location: Buffalo NY
Posts: 11
Re: Help Me Design My Chevelle

Thanks for all of the ideas. My previous Chevelle was a '72 with and L-88 short block, 990 heads, 12 bolt, HTH-400 and I think it was a 3500 stall speed converter. I pretty much left the frame untouched, the car had manual discs upfront, the lower front A-Arms were double nutted and upper arms had the serrations milled off, I also had the front sway bar removed for awhile. I had adjustable upper trailing arms and had upgraded the drive shaft. Basically old school hotrod techniques, but it's interesting to hear what each of you has done. It's been around 15 years since I built my last Chevelle, so I figured a lot had changed and that there would be more modern parts for me to consider.
71496Chevelle is offline  
post #15 of 19 (permalink) Old Mar 16th, 20, 10:39 AM
Senior Tech Team
 
Join Date: Dec 2005
Location: Lancaster, PA
Posts: 11,157
Re: Help Me Design My Chevelle

Why buy modern parts, when the old stuff worked? My car ran 8.80’s at 151 with stock front control arms and rubber bushings. It went 10.70’s with stock boxed rear arms and 4 wheel drum brakes. New fancy parts don’t make it any faster.
DragRac69 likes this.

Ray


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Best pass 8.87 at 150.98 1.212 60'. Sold 3/2018

1970 SS 396 project in progress. Bought 5/2018
bracketchev1221 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech 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. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in










Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



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