Project 3400 Roller Cam Block (Page 69/82)
lou_dias MAR 16, 05:27 PM
fresh rebuild starting to come together. In this pic the gasket was shifted a little to the right...I'd say it's "matched" well.
starnes691 APR 26, 02:33 PM
will it make 230 whp with those terrible flowing heads? will it even make it to 200 whp? nope. your 187 dyno was a farce which you admitted on www.realfierotech.com
La fiera SEP 28, 10:36 AM

quote
Originally posted by lou_dias:

fresh rebuild starting to come together. In this pic the gasket was shifted a little to the right...I'd say it's "matched" well.




Looks good!!
Blacktree SEP 28, 07:29 PM
Looking good, Lou.

For what it's worth, I did before-and-after dyno tests of the Trueleo headers. The "before" was ported stock manifolds with a Fiero Store Y-pipe (not as restrictive as stock). So I already had a decent exhaust setup going. But the Trueleo headers increased power and torque over that. Most of the performance improvement was above 4000 RPM. And there was no noticeable loss of torque in the lower RPM range.

Long story short, the Trueleo headers are good for an engine that likes to rev (and/or breathes really well). So that new camshaft should compliment the headers nicely.

[This message has been edited by Blacktree (edited 09-28-2015).]

lou_dias SEP 29, 12:29 PM
Thanks, I have been using them for 8 years and they were on the engine that made 249 ft*lbs on a Mustang dyno, so I was well aware they didn't hurt my torque.
I have the new motor built but discovered ignition issues. I've regapped the plugs and it feels better now. I hope to do some actual tuning soon. Torque feels good on the new motor (since the re-gap) now that it's a bit more broken in. Still under 500 miles on it with moly rings so it still smokes.
Also, my muffler developed some holes so I couldn't get a good reading on the A/F ratio when trying to get a base tune. Need to get it patched up...it never ends it seems...

Along the way I've had to replace yet another 5x4.75" wheel bearing and a West Shore rear bump-steer control arm...
...it just never ends...
La fiera SEP 30, 11:00 AM
Hey Lou, try driving the car on long accel and decel. That will make the rings seat faster and better. My rings are usually seated in the 1st half hour of driving. And remember, don't use synthetic oil during break in.
lou_dias SEP 30, 11:19 AM

quote
Originally posted by La fiera:

Hey Lou, try driving the car on long accel and decel. That will make the rings seat faster and better. My rings are usually seated in the 1st half hour of driving. And remember, don't use synthetic oil during break in.



I have heard chrome-moly rings smoke for about 1200 miles...
La fiera SEP 30, 12:58 PM
My heads are almost done, they should be here in the next 2 weeks along with my short block. Then I have to put it together.
Keep us informed on your progress! Good luck!
lou_dias OCT 15, 01:33 PM
race on 10/10/2015
Made it to round 3, had the lead but my body rolled onto my wide 315R17/35 tire that sticks out so I lost control... Would have had an 18 second lap. I can really push the turns now with my tire upgrade. New cam makes peak torque at 3600 instead of 4000 of the stock 3400 roller cam and peak hp at 4700 instead of 4900...which is exactly what I needed to lower my drop clutch and only get pulled on 1.5 lengths off the launch against the AWD car. I was able to make up ground in turns 1+2 & 3 and take the lead in turn 4. Now the long wait until next May. The car that "beat" me is a perennial 2nd place finisher this year and missed 2nd place by 2 feet in this event.

My races are at 2:50 , 16:20 and 22:10



Even better at 60fps
https://www.youtube.com/watch?v=2rd3VbegE68

[This message has been edited by lou_dias (edited 10-16-2015).]

lou_dias JUL 26, 10:09 PM
Well, the competition hasn't sat still. Time to upgrade to lighter wheels that fit the tires better...

Weld 17x10's weigh only 2-3 lbs more than stock 15x7's...