• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

odds of my high rpm nitrous 306 surviving

  • Thread starter Thread starter DarkoStoj
  • Start date Start date Dec 26, 2005

DarkoStoj

Founding Member
Sep 4, 2002
929
13
39
Detroit
Dec 26, 2005
#1
  • Dec 26, 2005
  • #1
I'm building a 306 for my 68 Mustang, and was curious if this was too much power for the bottom end to survive. I plan on shifting between 7,000 and 7,500RPM

Stock 68 Block .030 over
10:1 compression forged TRW pistons
Eagle I beam rods
Stock crank turned .10

Comp Cams XR280R Solid Roller
242/248 dur @.50
.608/.614 lift
110LCA

Box stock AFR185CC heads with the 58CC chamber
Vic Jr Intake
Speed Demon 750 Double pumper
NOS 150HP Cheater spray
MSD Digital 6+ Ignition
Mallory Unilite Distributor

Tremec 3550 with Billet Aluminum Flywheel and Centerforce D/F Clutch

4.56 Gear with Track lock (until I blow up my 8" and go with a 9" and probably 4.10's)
 

Euphoric306

New Member
Apr 5, 2004
905
0
0
Dec 26, 2005
#2
  • Dec 26, 2005
  • #2
ur gonna need some bigger injectors than stock for that combo
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Dec 26, 2005
#3
  • Dec 26, 2005
  • #3
Is that a "0 Internal balance motor" if so you may be OK but keep the tune in check, detonation will make the crank walk and take out the block.

Now if it is a 50 oz or 28oz motor I am not feeling as good....

The TUNE will be the key.,
 

DarkoStoj

Founding Member
Sep 4, 2002
929
13
39
Detroit
Dec 26, 2005
#4
  • Dec 26, 2005
  • #4
Rick 91GT said:
Is that a "0 Internal balance motor" if so you may be OK but keep the tune in check, detonation will make the crank walk and take out the block.

Now if it is a 50 oz or 28oz motor I am not feeling as good....

The TUNE will be the key.,
Click to expand...
Its a 28oz balance

I'd be thinking that I wouldn't have much of a problem with detonation since I'll be running aluminum heads, 10:1 compression, and 93 octane
 

Rick 91GT

Mustang Master
Nov 29, 1999
9,692
95
99
PA
Dec 26, 2005
#5
  • Dec 26, 2005
  • #5
Well the 28oz is a lot better then 50oz but 7500 is a little higher then I would go for a motor that isn't internally balanced, really depends on the assembky, machine work etc....

Yes the alum heads will help with detonation but it will not make is disappear. With a 10:1 motor on pump gas I would be careful with timing on the N2O, humidty plays a major roll as well.

Go 1 step cold on the plugs gap them down to .035, I would try intial timing at 8-10 degrees, make a few short pulls on the N2O, shut the car off and read the plugs.
 
You must log in or register to reply here.

Similar threads

odds of my high rpm nitrous 306 surviving
  • DarkoStoj
  • Dec 26, 2005
  • Classic Mustang Specific Tech
Replies
8
Views
994
Classic Mustang Specific Tech Dec 26, 2005
10secgoal
1
Stangnet, rebuild my mismatched component fresh 306 that my PO built
  • DarkoStoj
  • Aug 29, 2005
  • Classic Mustang Specific Tech
Replies
6
Views
731
Classic Mustang Specific Tech Aug 29, 2005
Bullitt
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?