Dynoed my 532 today - Chevelle Tech
Performance Our High Performance area

 25Likes
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 29 (permalink) Old Jul 9th, 20, 11:36 PM Thread Starter
Senior Tech Team
Gary
 
Join Date: Feb 2007
Location: Kansas City,Mo.
Posts: 4,569
Dynoed my 532 today

Ran my 13.5 to one 532 today . It made a best of 917 at 7100 with my 2.125 headers into a 4 inch merge collector with a 3.250 pinch and around 8 inches of collector length. I knew this was too small for this engine.these were the headers that were on the old 505. The engine made 944 hp with 2.25 to 2.375 dyno step headers and 4.5 inch collectors at 7700 and was 20 up at the previous 7100. These are admittedly too big for this engine. We also had to add quite a bit of fuel with the bigger headers as the AFR went to 14 and 1/2 to 1 with the extra air flow. Guess I'm going to have to build some new headers. Prob 2.125 to 2.250 step or 2.250 primaries. Been meaning to buy the pipe Max program although I'm still using the stock front frame in this car which makes it challenging to package the dimensions they will call out
gnicholson is offline  
Sponsored Links
Advertisement
 
post #2 of 29 (permalink) Old Jul 9th, 20, 11:39 PM
Senior Tech Team
Chris
 
Join Date: Aug 2002
Location: Alberta, Canada
Posts: 6,326
Re: Dynoed my 532 today

That's a pretty sizable gain with the headers. Did it lose any torque down low?

1971 Chevelle SS454, T56 Magnum 6 speed, 3.31 Posi

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

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

Twitter:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
-SS454- is online now  
post #3 of 29 (permalink) Old Jul 9th, 20, 11:50 PM Thread Starter
Senior Tech Team
Gary
 
Join Date: Feb 2007
Location: Kansas City,Mo.
Posts: 4,569
Re: Dynoed my 532 today

The printer quit working and all I have is the last Dyno sheet but it basically was at least as good from around 6000 RPM which is about the stall speed of the converter. Should have all the copies tomorrow so I can study at a little bit more
gnicholson is offline  
 
post #4 of 29 (permalink) Old Jul 10th, 20, 6:42 AM
Lifetime Premium Member
Guy
 
Join Date: Dec 2006
Location: Nova Scotia Canada
Posts: 2,527
Garage
Re: Dynoed my 532 today

917 HP from 532 CI = 1.72 HP/CI
Very good numbers indeed !!!
Guy

'86 Monte SS,
513 Stroker,
AFR CNC'd 315 heads,
Custom Bullet solid roller,.706, 285/293-255/263 @ .050,110 LSA,UDHarold's lobes.
Isky .904 EZ-Roll "Helix" Solid Roller Lifters,
Thanks to Mike "Wolfplace" Lewis,
Weiand Stealth intake,ported & gasket matched,
825 Mighty Demon,tuned by jmarkaudio,
2 inch Hooker Headers,(Coated),
Doug Nash 4+1 5 speed,w/a couple of cryo treated gears,
9 inch rearend,
Hurst Vertical Gate II In Line Shifter,
TC Member # 4921
GuysMonteSS is offline  
post #5 of 29 (permalink) Old Jul 10th, 20, 7:33 AM
Senior Tech Team
Jarad
 
Join Date: Jun 2012
Location: Louisville, KY
Posts: 1,562
Very nice numbers. How'd it carry past 7700? Bet it sounds good!
JBoggs is online now  
post #6 of 29 (permalink) Old Jul 10th, 20, 8:00 AM
Senior Tech Team
 
Join Date: Dec 2005
Location: Lancaster, PA
Posts: 11,224
Re: Dynoed my 532 today

Those are some nice numbers. I ran 2 1/4 headers on my car with the stock frame, but I didn't have them made to any dimension. The driver side was made to fit in the chassis and the passenger side was copied to keep them equal. I had 1 tube go outside the frame on both sides. My friend had Lemons headers in his car and those had 2 go outside the stock frame.

Ray

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

1970 SS 396 project in progress. Bought 5/2018
bracketchev1221 is online now  
post #7 of 29 (permalink) Old Jul 10th, 20, 10:13 AM
Senior Tech Team
Lew
 
Join Date: Nov 2015
Location: Potomac, MD
Posts: 1,072
Garage
Re: Dynoed my 532 today

Sometimes it is a balance of what works fine and what works perfect along with just plain good fit vs bad fit. Also are you running an exhaust which also changes things. After having numerous set of headers I have determined unless you are all out racing it is not worth the hassle of: burned spark plug boot thus creating an electrical arch with header, having to take headers partially or all off to take oil filter out, burning starter solenoids all the time because the header tube is too close, removing the starter is next to impossible without pulling the header off, spending 20 minutes to take one plug out because it is easier than removing the headers, no power brakes because the number 5 tubes goes way up and over, leaks from the old tube over the frame connection, oh yes - how can we forget the steering column clown show, the headers are so low I cant go over speed bumps and when you do you hear it and the header tube dent-o-rama to get it to fit messing up you nice Jet Hot coating. I am sure I might be missing a few. In summary (if not a race car) it may not be worth the 20 hp to have a bunch of this going on.
Lew540 is offline  
post #8 of 29 (permalink) Old Jul 10th, 20, 10:31 AM Thread Starter
Senior Tech Team
Gary
 
Join Date: Feb 2007
Location: Kansas City,Mo.
Posts: 4,569
Re: Dynoed my 532 today

I should have been a little more specific. This engine is 4 MI 70 Chevelle drag car that I generally use for NHRA Super Street. It had a 505 that generally ran 137 138 mph with a throttle stop. It would probably go 141 or so wide open and run 9.30. I was trying to get another five miles an hour or so without so much torque that it becomes inconsistent which is why I went with the 4-inch stroke 532. Those 30 hp more with the big headers are worth another 2 mph. I had lemons headers on it that I ended up making a couple of tubes and some different merge collectors and they work great on the 505 think I'm going to need some 2 and 1/4 tubes if I want to get all the power out of this thing
427L88 and Jebchevelle like this.
gnicholson is offline  
post #9 of 29 (permalink) Old Jul 10th, 20, 10:32 AM
Lifetime Premium Member
Marcus
 
Join Date: Sep 2005
Location: Sweden
Posts: 6,389
Garage
Re: Dynoed my 532 today

Nice nr’s congrats!

Chevelle Malibu ss 64
489 BB with parts from Lewis racing
Alumitech radiator with dual spals
Th 400 Edge 9.5" converter
57 3/4 wide 12 bolt: Eaton posi, Us gear 3.31, Toms KA 33 splines axles
Malibu ss 64 is offline  
post #10 of 29 (permalink) Old Jul 10th, 20, 12:12 PM
Senior Tech Team
Lew
 
Join Date: Nov 2015
Location: Potomac, MD
Posts: 1,072
Garage
Re: Dynoed my 532 today

BTW - Good power numbers on that 532. I have the Lemons 2 1/8 on my 1965 Chevelle less power than you pump gas job about 750 hp. I had some other headers on before these Lemons and pretty much all those comments above I ran into on the 2 1/8 on the 1965 which has a slightly narrower frame than the 1970 cars. The Lemons are great and fit well, tuck up nice and all the tubes fit in the frame - which can be good and bad. The 2.25 inch would probably get you there. Good luck on breaking 140 mph.
Lew540 is offline  
post #11 of 29 (permalink) Old Jul 10th, 20, 12:15 PM
 
Join Date: Dec 2005
Location: Tri-Cities
Posts: 9,123
Re: Dynoed my 532 today

Nice piece...good work.

Chris Straub
Mfg Performance Parts

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


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


Why is it we never have time or money to do it the right way in the beginning but we always have time and money to do it over again?
cstraub is offline  
post #12 of 29 (permalink) Old Jul 10th, 20, 2:14 PM Thread Starter
Senior Tech Team
Gary
 
Join Date: Feb 2007
Location: Kansas City,Mo.
Posts: 4,569
Re: Dynoed my 532 today

Lemons is the only company I know of that makes headers for a combination like this with a cylinder heads and everything and they are 4 months behind looks like I'm going to have to build them myself
gnicholson is offline  
post #13 of 29 (permalink) Old Jul 10th, 20, 3:51 PM
Tech Team
Durand
 
Join Date: Dec 2015
Location: Washington
Posts: 485
Re: Dynoed my 532 today

What do you have for cam and heads?
Jebchevelle likes this.

65 Pontiac Lemans 468 BBC, t400, 4.10 12bolt

Best 1/4 mile. 11.43 @ 118 mph
LaVelle is online now  
post #14 of 29 (permalink) Old Jul 10th, 20, 4:29 PM
Lifetime Premium Member
MARK
 
Join Date: Jul 2007
Location: CO/TO
Posts: 4,448
Re: Dynoed my 532 today

Quote:
Originally Posted by cstraub View Post
Nice piece...good work.
Same here! Seems like a lot to run 10.90 @ 2750
Jebchevelle likes this.

Machined GM production heads
Oil pan modifications
Red Line Camshaft
VORTECPRO is offline  
post #15 of 29 (permalink) Old Jul 10th, 20, 4:47 PM
 
Join Date: Dec 2005
Location: Tri-Cities
Posts: 9,123
Re: Dynoed my 532 today

Quote:
Originally Posted by VORTECPRO View Post
Same here! Seems like a lot to run 10.90 @ 2750
As I have said in the past....as long as the customer is happy that's all that matters...... Call me... I need to talk to you about an opportunity and see if your interested.

Chris Straub
Mfg Performance Parts

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


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


Why is it we never have time or money to do it the right way in the beginning but we always have time and money to do it over again?
cstraub 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