Squeezing gains out of the 3.4

[Anonymous]

I have recently had a lot of ideas now that I have a job.

These are the ideas that I am thinking of/acting upon.

Headers-Almost done
Head port/polish-Starting in a month
I also am going to purchase 24 SI valves and springs, and install them on the 95 heads that are getting ported.
Cams. I WILL find a place that will do a set of cams for my motor. I do not know yet whether I am going to use my current cams or the 95 ones I have. They SHOULD be the same.

I want cams mainly for performance straight to redline, becuz with the rebuild I lost power at 6500+ rpm. I don;t care about low end, that doesn't matter to me.

I know this sounds crazy, but is it possible? Sappsye107(sp) please comment on this as your input would be greatly appreciated.


About the plenum. I am thinking of taking a chop saw to the plenum. This is what I'm thinking. There are a lot of aftermarket intakes for small block chevy's which have individual throttle plates for each cylinder. This is also the setup on the 610hp V10 Shelby Cobra. The cobra makes 501 ft/lbs(low compared to hp) at 5,000rpm! that is high, very high. The max hp is made 1000 rpm after max tq. I believe this is in part to the intake. Now our current intake has a setup which the air goes in throuhg the throttle body, then getis into its port, then curves back towards the rear bank, circles up and heads towards the front then down. What if I cut it right after it circles? This way the air will enter right on top of the rear cam carrier. Then figure out a way to have an individual plate for each rectangular port and use the factory cables and attach a filter right on top.

[Streetrodder83]

If your going to do an intake manifold, I would suggest sticking to a single throttle body. That setup is a race setup, with little application on the street. You are going to be dealing with a complex linkage setup to get all of the throttle blades to open at the same time. Going with that setup does allow you to tune each cylinder individually, but it is a hassle. I guess if your going for an exotic setup go ahead. I think you'd see plenty of gains through a single throttle body. Even if the engine is intended for race I don't see the point, other than looks.

[dykz34]

Heads--I hope you aren't doing them. I would recommend having a REPUTABLE shop do them. (Look into an import shop to do them as they mainly work with 4V heads)

Cam regrinds are available. They will improve topend like CRAZY. The preliminary #s I have seen are I think 30 hp over stock at 7000 rpm. I'd be willing to bet that it would pull to 8000 if you want it to.

[wireman121]

what kind of gains would you expect to get out of ported and polished heads?

And any chance of getting headers made for a 93 auto? heh :-) please? pretty please?

[dykz34]

Heads aren't gonna be a huge gain on this motor, they already flow pretty well for being stock.

Headers by Aaron? I surely don't like the ring of that.

[Guest]

was that the dude who used Solder to weld the runners together? lol that was funny them welds were "fucked" to put it nicely :P

[Anonymous]

Headers by Aaron

HAHAHAHAHA

I cannot make them for an auto as they have this big trannsmission right where my headers run.

No, I did nto use solder

I am not doing the heads, this mexican dude in southern Texas is. HE does a lot of head work, did a SBC set for us, got them to flow 50cfm more than a Corvette Z06's.

[Crimson Fury]

you have the 13 degree cam retard aaron? the p&p'ing of the heads will assist the timing very well, according to ben and just ask pocket-rocket i'd get a 3 angle valve job, and deck dem heads along w/the p&p.

[Anonymous]

the heads are getting decked which will bring cr to 10:1 according to the shop.

My current valves are new and have a 5-angle. Do the new SI valves need an angle job?

I would like to retard the timing 13*, but I will do that when I install the hew heads/cams.

But if I get reground cams with new specs will I still need/want to do the retard?

[SappySE107]

Ok, heads dont do much dave, you are right.

[Anonymous]

I think I am gonna take Ben's side on this......

yyyeeeaaahhh

[dykz34]

Show me dyno slips, bishes. "It feels stronger" doesn't mean shit to me.

I don't think you will need custom cam timing with custom cams... isn't the point of custom cams to get the specs you want?

[Lyle's GTP]

I'm curious about the three angle job. When I built motors for optimax, all engines got three angles. When our serdi guy wanted to impress he would cut 5 I've even seen 7 angles, our heads already have 3 anyway.

Lyle

[SappySE107]

Thats right dave, without dyno sheets, everything is worthless. I dont see any dyno sheets of the DOHC on a 75 shot, so it must be pointless to do as well. Your logic means shit to me, nor does having to prove something to you with a dyno sheet when I can tell from tuning, and from driving the cars that there is a solid gain. I dont see anyone making an actual HP claim, but what you are saying has no foundation nor credibility on your behalf. Have you even looked at a stock head sitting in front of you? I have my doubts by how you are saying stock flows well enough. Looking at the stock flow sheets from DKOV tells me the low lift values can be improved (though his set didnt show any gains till .200" lift).

[dykz34]

Was that so hard? At least you SAID what was wrong this time. I don't mind being wrong, but jesus christ man. You could have taken a different approach to it instead of attacking my credibility. I never posted saying that I knew everything, nor will I ever claim that. Lighten up.

PS: I originally said HUGE gains.... which, in my mind, is a lot more than you will get out of heads.