New Engine left with questions..Cam help needed
Well I have just rolled the 500 mile marker on my new 383 and I am left wondering... I just don't think that the power levels I was looking for are there. I wanted a 500hp 500tq street monster but the seat of the pants tells me it is not there. So I was wondering if the cam I chose might not be the best.
Here are the specs on the combo
383 10.5-1 comp
AFR 195 heads.. ported flow 278in 210 ex
Comp Magnum hydrolic Roller Cam #12-450-8
750 Holley HP series carb. (stock out of the box)
Air Gap intake.
Th 350 with Caon 3000 converter
12 bolt w/ 3.55 cogs
For a fuel system I ran -8 An from a sump in the tank
to the mech fuel pump. It is an Edelbrock 130 gph.
THe exhaust sys is a 1 3/4 long tube headders in to a 3.5 collector and 3 in system that has 40 series flows and an x-pipe.
Now the engine still needs some tuning.. it has a date with the dyno soon and only that will tell. If I had to guess I would say I am somewhere near 375- 400hp. THe engine runs and idels fine. It pulls hard to about 6300 and then the cam runs out. I have the rev kit so no valve float. I know that tuning can give allot so I am not gonna change anything till I get a good tune but I was just day dreaming here looking for more power. Also I need to get my fuel pressure gague hooked up so I can see if there is a pressure drop on WOT. I thought about a Comp cams XE series cam because of their more agressive ramp speeds. Ok below you will find the specs for the cam I have.
Here are the specs from the cam card.
Gross lift .560in 560 ex
duration at .006 Tappel Lift 286 in 286 ex
Valve timing INT 37* BTDC 69* ABDC
EXT 77* BBDC 29* ATDC
The cam has a 106 Intake centerline.
Duration at .050 230 230
Ok so what would the perfect cam be for my set up? THe only guide lines that I have is that it be a Hydrolic Roller.
69 Camaro RS, 383ci,10.5-1 AFR 195's ported, Comp 286HR, 4340 forged Crank & Rods, JE Pistons, RPM Airgap, Holley 750 HP carb, 350 turbo w/ shift kit, 3000 Coan, Be cool, caltracs,12bolt 355 eaton posi..Best E.T. 12.22 @ 112
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