| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
03-07-2010, 11:34 PM
|
|||
|
|||
541 what will it make
Ill be going to texas next weekend to have Jim Robertson dyno my 541,what ya thinkin.
Bore 4.375 Stroke 4.5 Rod length 6.565 Comp 11.1 Cam.750\.750 276/280 @ 50 114 Intake is a BOP ported by Jim Robertson Heads are Kauffman HPs ported by Jim Robertson 2.25\1.75 Flow numbers are from a 4.21 fixture .300 215 165 .400 280 197 .500 332 221 .600 381 242 .700 403 255 .800 409 270 Carb will be a 1250 hp unless i find something bigger.Headers will be 2.125\2.25\4.0 Hope it comes back in one piece. |
|
#2
03-07-2010, 11:55 PM
|
||||
|
||||
|
I'm guessing more than 220 HP
__________________
'68 GTO 4-spd Hardtop (11) '68 GTO Convertible AT (1) '70 LeMans Sport Land of Lakes Muscle Car Classic Facebook Event Facebook Wall (Kurt Smith,Minneapolis) |
|
#3
03-07-2010, 11:57 PM
|
||||
|
||||
Mine made 889hp so I will guess you make 888hp
|
|
#4
03-08-2010, 12:01 AM
|
||||
|
||||
|
880hp
__________________
|
|
#5
03-08-2010, 12:03 AM
|
||||
|
||||
|
ill go 905 hp.
__________________
1972 Pontiac LeMans Thanks to Fuelab Digital Fuel Delivery Quarter-Max Chassis and Racing Components |
|
#6
03-08-2010, 12:16 AM
|
|||
|
|||
|
I think the biggest down fall of the combo is the cam probably isnt ideal but i didnt want to change it till after we dyno it because i know what it made befor and i didnt want any variables besides Jims work.
|
|
#7
03-08-2010, 01:08 AM
|
||||
|
||||
|
is this for the badass ventura greg??
__________________
1972 Pontiac LeMans Thanks to Fuelab Digital Fuel Delivery Quarter-Max Chassis and Racing Components |
|
#8
03-08-2010, 02:47 AM
|
|||
|
|||
|
890.You have a little less cam than me,but a little more compression and probably a better intake.He said I would make 880 or more.So I'll give you a little more.
|
|
#9
03-08-2010, 07:14 AM
|
||||
|
||||
|
Greg is this pump gas 93 capable? I think there maybe 891 hp with those nice pipes
__________________
1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
|
#10
03-08-2010, 08:02 AM
|
||||
|
||||
|
Greg I say 896 and I know squat!,lol....
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
|
#11
03-08-2010, 08:12 AM
|
||||
|
||||
|
My dad has about the same motor,but with more compression and more cam and he made 880 on a conservative dyno.He has 400 cfm Super Chiefs and a Tiger intake.
So I would say somewhere around 840 HP.
__________________
First Pontiac powered street car in the 7's 7.940@170.84. 3460#s |
|
#12
03-08-2010, 10:11 AM
|
|||
|
|||
|
Ha Adam its for the ventura if it ever gets that far.Dyno numbers should be good enough once i hit it with a 42 jet at the track.Greg
|
|
#13
03-08-2010, 10:15 AM
|
|||
|
|||
|
And yes it will be dynoed on pump gas.Greg
|
|
#14
03-08-2010, 10:45 AM
|
||||
|
||||
|
911 HP. Nice build. Should be alot of fun.
__________________
68 Firebird Are you running with the wind or breaking it? |
|
#15
03-08-2010, 11:49 AM
|
||||
|
||||
|
I'll say 889.5 hp of course.. "we all know flow # don't matter or dyno's" , we just have to get it in a car and go down the track.. Good luck though!
Last edited by GREATGTO; 03-08-2010 at 12:00 PM. |
|
#16
03-08-2010, 12:45 PM
|
||||
|
||||
Big Numbers with those Big headers
 Don't load up the wrong 541 when ya leave!!! Wish I was there to come watch. Good Luck with it, can't wait to hear the results!
__________________
Beers Bikes Babes and Pontiacs Rule!!!  63 Lemans in the 9's race 66 GTO HT Cruiser 06 Triumph Rocket III TURBO! 2300 CC Bad boy KTM 525 Dirt Terrorizer POLARIS 900 RZR 10 GMC SLT Duramax Haul anything anywhere http://www.facebook.com/profile.php?...app_2392950137 |
|
#17
03-08-2010, 04:29 PM
|
||||
|
||||
|
I would say 870...cam seems a little small like you said..
__________________
540 c.i. Ultra Street Combo Tiger Heads with Tiger Intake Induction Solutions fogger with .046 jet First ultra street/ultimate street NOS car to get into the 4's! 1.079 4.559 153.23. 3100 lbs 7.77 @ 169 1/4 Mile (2015) with EHTTFMF!! T2TTFMF! Special Thanks to: Ron at Rhodes Custom Auto Butler Peformance Jim Hostler's Transmissions (HOSGTO) on here Induction Solutions BES Racing Engines. Cheeseburger VP Racing Fuels Calvert Racing |
|
#18
03-08-2010, 04:59 PM
|
||||
|
||||
|
Using my new Engine Jr program, it says 932 HP @ 7200 rpm, 762 ft/lbs @5750
My HP from Headflow calc is: Head Flow of 408 is 838.85 HP at a RPM of 7,932 Pipe Max estimates 895 to 913 HP. Says cam is too small, though.
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates Last edited by johnta1; 03-08-2010 at 05:10 PM. |
|
#19
03-08-2010, 06:09 PM
|
|||
|
|||
|
Ya it would be nice to have a big stick in there,it may get a different cam before it goes in the car.
|
|
#20
03-08-2010, 06:32 PM
|
||||
|
||||
|
Pump gas, **** I'll change that to 891hp.
Greg good luck.
__________________
|
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
