augiedoggy

I just wanted to udate this thread for others that use the search function to do research.

I ended up going with the felpro 1094 gaskets but I did spray them with permatex spray gasket material. I also went with the lunati voodoo262 cam, new lifters and matching valve springs. I have installed, the engine and broke in the cam with no issues, I have about an hour runtime on it now at different rpms while I adjusted things like the starter and timing and the idle (still fighting an unresponsive idle adjustment screw on the edelbrock carb. (got a holley regulator on order as my fuel pessure is a bit high for this carb) but otherwise its running good with no smoke or other surprises.
I used dyno200 for reaserch and with all of my engine components plugged into it the voodoo 262 gave me the best performance in the correct range with 406hp and 417lbs of tq estimated... if I'm anywhere near that I'll be a happy camper.








I dont think I did too bad for a $1,500 build plus $900 exhaust (the last pic was before timing)
Thanks again to all that helped with advice.

REELAV8R

Sounds optimistic for a 262 cam in a 350.

7t9l82

just a note , retarding or advancing the cam 2 degrees only moves the power band a small amount, like a hundred r.p.m or in that range so don't be scared of that.
i have flat tops with 64 cc heads the L-82 cam advanced 2 degrees with 1.6 rockers and it doesn't ping with 44 degrees total on a 95 degree day. however, i have aluminum heads and a big aluminum radiator. so i don't know how that translates to the op's question.

augiedoggy

I thought so too however it performed much better than the old school 268 grinds I compared it to in the software. these numbers are slightly lower but I used a 700cfm carb in the simulation... it was higher with a 750cfm.
Maybe I did something wrong? I included the dyno 200o pdf specs

I realise the numbers are optimistic to say the least... I was just looking for as much power as I could get in the right rpm range for my gearing on the budget I had.

augiedoggy

I timed it to have 34degrees at max mech timing I havent driven it yet due to the fact that I'm still reinstalling the seats and need to address the rear brake lines but the calulators I used put my dynamic comression ratio somewhere down at 8.2:1 if I remember right and when I measured my piston reliefs and head chamber size I found the piston reliefs were larger cc diameter than they were speced for as well as my heads so Im hoping this will allow me to run 91 or at least 93 on the street with no issues... I have a quench of like 36 I believe so I hope that helps as well.
on a plus note I got my unresponsive idle screw sorted out today.

augiedoggy

OK so after doing more reading I'm more confident in these numbers....
I do have almost the same combo as this engine only I have more compression from my flattops vs the dished pistons and the dart heads instead of the vortecs. These guys managed 406hp and 420lbs of tq from it with a 268 cam.
http://www.superchevy.com/how-to/46370-gm-350-crate-engine-build-v/
They state at the end that the 262 can would deliver more torque at the cost of a few HP...they stated comp cams dyno testing proved this...
Car craft did an almost identical build and managed about the same power.

REELAV8R

Hope it does make that. I didn't realize the 262 had that much duration @.050.
You going to dyno it before it goes in the car?

augiedoggy

Its already in the car and running but I do plan on running it on a dyno at some point.
It is misleading since the specs of the voodoo 262 cam make it seem larger than most 268 cams i looked at.... plus I was mistaken on my roller rockers... they are 1.6 so that may help a bit.

REELAV8R

If the predicted dyno is correct then 6000 rpm shifts will be possible with almost no loss in power from 5500 rpm. This will be good for less power drop between gears.