How much NOS will a cast crank take - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech How much NOS will a cast crank take

Print Thread

Page 1 of 2

1

2

How much NOS will a cast crank take #555785 12/16/09 09:45 PM 12/16/09 09:45 PM
Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL S scottb OP pro stock
scottb OP pro stock S Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL	A friend wants to put NOS on his car with a stock 360 cast crank and stock rods ross pistons what would be a safe amount .I told him lets build a good steel crank and h beam rods motor together frist then put the NOS to it

Re: How much NOS will a cast crank take [Re: scottb] #555786 12/16/09 09:55 PM 12/16/09 09:55 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	We sprayed the piss outa a pretty much stock 360 with 125 shot, only thing was ring gap set up for the shot and arp rod bolts and reduced timing when spraying,beware.... its fun

Re: How much NOS will a cast crank take [Re: scottb] #555787 12/16/09 09:55 PM 12/16/09 09:55 PM
Joined: Jan 2008 Posts: 377 Michigan Troll B blk00rt enthusiast
blk00rt enthusiast B Joined: Jan 2008 Posts: 377 Michigan Troll	I have always heard that a stock engine could take a 150 hp shot of nitrous. I ran my magnum motor at this level for 3 years before I build my 408. Rob Dunn 1976 Dart Sport 360 2000 dakota RT 408 with 150 nitrous 2013 Dodge Ram 1500 Hemi 2009 Jeep Patriot

Re: How much NOS will a cast crank take [Re: blk00rt] #555788 12/16/09 10:26 PM 12/16/09 10:26 PM
Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e... cheapstreetdustr master
cheapstreetdustr master Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e...	been sprayin a stock 360 bottom end since o4 .63 and .78 jets depending on track.. on a big shot plate. seems to be taking it...? dont know what that computes to ? it is polished rods and lightend rotating assy. with K.B. hypers.. fwiw.. cheapst. 5672469-wheels%20upsmaller.jpg (83 downloads) 365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]

Re: How much NOS will a cast crank take [Re: cheapstreetdustr] #555789 12/16/09 11:02 PM 12/16/09 11:02 PM
Joined: Aug 2003 Posts: 4,673 On the parachute mount N n20mstr master
n20mstr master N Joined: Aug 2003 Posts: 4,673 On the parachute mount	i had a stock 360 bottom end with forged repl pistons, Stock crank stock rods etc, In my car it ran 13.00 on motor and 10.90 with nitrous, It had two plates stacked for a two stage, both jetted at 175each so yea that was 350hp on a stock crank stock rod motor. Keep it out of detonation youll be surprised at what lives..Id keep it to 175 though and you should be ok. A 360 cast crank is pretty beefy ....BAD A$$ STREET CAR.....

Re: How much NOS will a cast crank take [Re: n20mstr] #555790 12/16/09 11:06 PM 12/16/09 11:06 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	Quote: Keep it out of detonation youll be surprised at what lives..Id keep it to 175 though and you should be ok. A 360 cast crank is pretty beefy Detonation is your biggest enemy BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: How much NOS will a cast crank take [Re: bigtimeauto] #555791 12/17/09 09:58 AM 12/17/09 09:58 AM
Joined: Apr 2009 Posts: 3,414 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,414 Toronto	when you all say stock bottom end, are the ring gaps and rings themselves stock as well?

Re: How much NOS will a cast crank take [Re: mshred] #555792 12/17/09 11:25 AM 12/17/09 11:25 AM
Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL S scottb OP pro stock
scottb OP pro stock S Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL	As far as i know the rings are not cut for NOS

Re: How much NOS will a cast crank take [Re: n20mstr] #555793 12/17/09 02:40 PM 12/17/09 02:40 PM
Joined: Aug 2005 Posts: 637 Sao Paulo, Brazil dart_73_br mopar
dart_73_br mopar Joined: Aug 2005 Posts: 637 Sao Paulo, Brazil	Quote: both jetted at 175each so yea that was 350hp on a stock crank stock rod motor. 1973 Brasilian Dart E100, boosted 390"

Re: How much NOS will a cast crank take [Re: cheapstreetdustr] #555794 12/17/09 03:36 PM 12/17/09 03:36 PM
Joined: Jul 2004 Posts: 1,868 Cali S.B Sub95 super gas
Sub95 super gas Joined: Jul 2004 Posts: 1,868 Cali S.B	Quote: been sprayin a stock 360 bottom end since o4 .63 and .78 jets depending on track.. on a big shot plate. seems to be taking it...? dont know what that computes to ? it is polished rods and lightend rotating assy. with K.B. hypers.. fwiw.. cheapst. .068 around 200hp .078 around 275hp most stock engines can take a 150 shot with no problems, as long as you take timing out and run good fuel, might have to put a colder plug in. just keep reading the plugs.

Re: How much NOS will a cast crank take [Re: blk00rt] #555795 12/17/09 08:37 PM 12/17/09 08:37 PM
Joined: Oct 2009 Posts: 1,267 North, Alabama D-50 pro stock
D-50 pro stock Joined: Oct 2009 Posts: 1,267 North, Alabama	blk00rt did your magnum motor have hyperutectic pistons when you were spraying N.O.S. on it.If it did,were the rings gapped bigger for it.I have a 360/380hp crate motor and I was wanting to try spraying it without regapping the rings.Maybe 100 or 125.I only run 1/8 mile. 5674175-Picture00611.JPG (36 downloads) 1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...

Re: How much NOS will a cast crank take [Re: D-50] #555796 12/17/09 08:54 PM 12/17/09 08:54 PM
Joined: Jan 2008 Posts: 377 Michigan Troll B blk00rt enthusiast
blk00rt enthusiast B Joined: Jan 2008 Posts: 377 Michigan Troll	the 360 magnum was a completly stock lower end. It had hyper pistons and rings were never touched. I ran it for 2-3 years on the stock bottom block until I decided to change to the 408. Rob Dunn 1976 Dart Sport 360 2000 dakota RT 408 with 150 nitrous 2013 Dodge Ram 1500 Hemi 2009 Jeep Patriot

Re: How much NOS will a cast crank take [Re: Sub95] #555797 12/17/09 09:01 PM 12/17/09 09:01 PM
Joined: May 2007 Posts: 174 Oklahoma H hemiiroc member
hemiiroc member H Joined: May 2007 Posts: 174 Oklahoma	.068 around 200hp .078 around 275hp most stock engines can take a 150 shot with no problems, as long as you take timing out and run good fuel, might have to put a colder plug in. just keep reading the plugs. I always thought .082 was about 200

Re: How much NOS will a cast crank take [Re: blk00rt] #555798 12/17/09 09:10 PM 12/17/09 09:10 PM
Joined: Oct 2009 Posts: 1,267 North, Alabama D-50 pro stock
D-50 pro stock Joined: Oct 2009 Posts: 1,267 North, Alabama	Quote: the 360 magnum was a completly stock lower end. It had hyper pistons and rings were never touched. I ran it for 2-3 years on the stock bottom block until I decided to change to the 408. Thanks for the info.Did you say you sprayed 150 on it? 5674246-Picture00611.JPG (27 downloads) 1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...

Re: How much NOS will a cast crank take [Re: D-50] #555799 12/17/09 09:18 PM 12/17/09 09:18 PM
Joined: May 2006 Posts: 1,260 New Mexico A Adobedude pro stock
Adobedude pro stock A Joined: May 2006 Posts: 1,260 New Mexico	There's a number of guys on the Dakota R/T Forums spraying 150 on stock bottom ends, and have been for years... 2001 Dodge Dakota 408 All Motor 11.27 @ 117.83 mph 2017 NM Mopar Challenge Series Champion.

Re: How much NOS will a cast crank take [Re: D-50] #555800 12/17/09 09:59 PM 12/17/09 09:59 PM
Joined: Jan 2008 Posts: 377 Michigan Troll B blk00rt enthusiast
blk00rt enthusiast B Joined: Jan 2008 Posts: 377 Michigan Troll	"Thanks for the info.Did you say you sprayed 150 on it?" yes, I do have a timing retard unit and I pull 1-2 degrees out but I dont really have to, I do it just to be safe. Rob Dunn 1976 Dart Sport 360 2000 dakota RT 408 with 150 nitrous 2013 Dodge Ram 1500 Hemi 2009 Jeep Patriot

Re: How much NOS will a cast crank take [Re: Adobedude] #555801 12/17/09 10:00 PM 12/17/09 10:00 PM
Joined: Jul 2008 Posts: 56 Michigan S Sue member
Sue member S Joined: Jul 2008 Posts: 56 Michigan	Thats no different than How many licks to the center of a Tootsie Roll Pop. It will take just enough to brake it

Re: How much NOS will a cast crank take [Re: Sue] #555802 12/17/09 10:07 PM 12/17/09 10:07 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	I think you will find that the crank shaft is not the weak link, Its every thing that sits behind it

Re: How much NOS will a cast crank take [Re: emarine01] #555803 12/17/09 10:28 PM 12/17/09 10:28 PM
Joined: Dec 2004 Posts: 1,256 Salisbury North Carolina 8secDart pro stock
8secDart pro stock Joined: Dec 2004 Posts: 1,256 Salisbury North Carolina	Got a stock bottom end 400,I mean stock.I have hit this motor with 250 forever.Keep the timing out and all will be good.Lenny

Re: How much NOS will a cast crank take [Re: 8secDart] #555804 12/18/09 01:32 AM 12/18/09 01:32 AM
Joined: Apr 2009 Posts: 3,414 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,414 Toronto	what's the max you can spray without regapping the rings?

Page 1 of 2

1

2

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1