We just finished up some preliminary tuning with our new "old" set up. Just to recap, this motor was my old motor which had about 12,000 miles on it, and had CP pistons 8.5:1 compression, Pauter rods, Fulle Ferrea Valve train, JWT cams, and headgames port and polish. The only thing we changed on this motor was a new set of ACL main and rod bearings,new headstuds,new headgaskets, and a set of Brian Crower cams. The pistons and rings were fine so we put them back in.
After some preliminary low boost tuning with a pig fat A/F we achived to make power till 7500rpms, where as the old cams would hit 6500 and fall off dramatically. Im really liking these cams right now. Im back to the dyno to see if higher boost levels will keep the gains consistant. Look at the Finish RPM point and dont concentrate at the power levels as of yet..The RPM signal was taken off an injector, so it 100% accurate.
Were trying to set the bar on power band, and longevity of the motor with this testing.

 

This is the 2nd car Ive seen with BC cams make power to 7000+rpm's. Thats a great powerband for highway and track use!

 

Sweet.

 

so i guess the plenum wasnt what was restricting the upper rpm power

 

I just did a higher boost pull but the fuel dumped to low 10's.. I lost the injector signal..But the power still looks like it maintains.Ill keep you posted!!

 

Well thats not 100% true, at these power levels no..At 700+ possibly..

 

WOW, impressive!!!

 

do you have the link to the old dyno so we can see the difference in the shape of the curve?

 

Whats the specs and are they available for both rev-up and non-revup??
Thats some nice *** power.

Keep us posted when you up the boost.

 

yeah.. that Very nice on BC cams...

I am guessing he used the stg 2 or 3 cams.

stg2 :
Adv.Dur. = 264/264
Dur.@.050 = 222/222
Lift(in) = .426"/.426"
Lift(mm) = 10.82mm/10.82mm

i think stg3 is 275º

(subscribing for dynosheet @ higher boost levels)

and LOL @ thread title change

 

You guys just dont stop

 

What's the word on the ACL bearings? are they a tri-metal bearing?

I assume you had to line hone the main journals for these bearings.

 

We have used the BC cams in a few of our built heads with great success. I tuned a VQ last week with BC 272's making over 600whpDD climbing all the way to 7000rpm.

 

wow you never give up do you.... ( in regards to thread title)

 

nice not many people running those yet
where was the thread to check out the pics dynosheetss

 

Easy 10's with that power!

At least for some!

 

ACL STD / RACE series no. Honing the main journals is only necessary if you go with a 0.25 undersize spec bearing (I believe, but please correct me if I'm wrong). I'm going with ACL race series bearings in one of the built motors I have, the other will use NISMO 0.25 spec undersized (thicker) bearings. ACL also manufactures 0.25 bearings FWIW... Also, they are tri-metal.

BOT - Julian: great news about the BC cams. Congrats on a VERY NICE power curve up top Excellent work, and please keep us posted.

 

Very impressive power curve with those cams. Is this still the regular APS TT kit? Or the extreme?

 

oh jesus, it's a joke. I hope you weren't taking offense to it!

 

Julian, your curves are so attractive