View Single Post
Old 02-18-2017, 09:49 AM   #68
BossHogg69
motor exploder
 
BossHogg69's Avatar
 
Join Date: Mar 2009
Location: Pittsburgh, PA
Posts: 2,346
Re: If you like destruction -

On a lighter note, the 532 is finally finished and hit the dyno 2/10/16 (sheet attached). This is actually the second time it was dyno'd, as the first go around they experienced some issues with some guideplate/pushrod interference and had to pull the intake off the check it all out, as they initially thought it was a lifter issue. I must give credit Straub Tech/Foxwell Motorsports for making it right and getting this thing dialed in. For some reason, the dyno shop only had a 2" primary x 3" collector header available (WAY too small). With the 2" header, the peak numbers came to 785hp @ 6500 and 705#/ft @ 5100. Pull was from 4000-6500rpm, with the avg for both HP & TQ being 675. I am having headers built for the engine, (since I can't find off the shelf 2 1/8" headers for a C10) but the guy doing the headers here in Arkansas obviously needs the engine in the chassis to build the headers. That being said, I was not able to send the proper headers for the dyno test (it was dyno'd in Greenvile, TN). 2 1/8" primary x 3.5" (or even 2 1/4" x 4") would be considered the 'right' size for this engine/power level/rpm, and would almost definitely shown another 20-24 horsepower. Both the builder & dyno shop agreed power would be around 805-809 and about 300 rpm higher with a 2 1/8 or 2 1/4 primary.

There is an engine dyno local to me, and if he has a set of bigger headers there I may strap this thing down again before installing it in the truck. I most definitely will put it down on the chassis dyno to see where I'm at after the install. I'll keep you all posted.
Attached Images
File Type: pdf 532 Dyno sheet.pdf (55.8 KB, 241 views)
__________________
Adam

1969 Chevy CST/10 stepside, DART Big M/TREMEC Magnum Extreme/3.73's w/Detroit Truetrac
1965 Chevy Bel Air Wagon (daily driver), 327/TH350,10 bolt w/3.08's
1961 Chevy Bel Air Sport Coupe, ZZ454/M21/9" rear w/3.50's & Detroit Truetrac
2005 GMC 1500 ccsb 2wd, 6.0L/4L65e/3.73 G80
2006 GMC 2500HD ccsb 4x4, DMax LBZ/Allison 6spd/4.56's w/Detroit TrueTrac

Use the SEARCH function on this forum - it is your friend!!
BossHogg69 is offline   Reply With Quote