Thread: Need someone to Dyno Desktop this

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I need someone with desktop dyno to run this for me. Its much appreciated. Anybody else who has it run it, I would like to compare differences.
396 BBC bored out to a 408
Holley 4-barrel carb 750 cfm
Wieand Action series + intake dual plane
292 heads oval port, 113 cc chambers. bowl blended, slightly ported. single spring.
KB pistons, 17cc dome
stock rods
forged crank
Xtreme Energy XE256H Hydraulic Flat Tappet Camshaft
Operating Range: 1000-5200 RPM
Duration Advertised: 256° Intake / 268° Exhaust
Duration @ .050'' Lift: 212° Intake / 218° Exhaust
Valve Lift w/1.7 Rockers: .480'' Intake / .485'' Exhaust
Lobe Separation Angle: 110°
4.10 gears in the rear
msd distributor

Headers, with flowmaster 40s
Should run 9:1 c/r
What do you guys think this combo would make approximately.
any suggestions?

SWITCH TO A SINGLE PLANE INTAKE,980 CARB TUNED TO YOUR CAR,RUN A HYDRAULIC ROLLER 256/268 @50 .625 I/E 110LC@ 108CL W/1.75 ROLLER ROCKERS. GET THE C/R UP AROUND 10.9:1 OR MORE., 2.250 PRIMARY TUBES W/3.00-3.50 EXHAUST W/FLOWMASTER 40's [3.50 I/O]
OR YEA FINISH PORTING YOUR HEADS&INTAKE, MAKE SURE YOU HAVE A CLEAR FLOWPATH IN&OUT YOUR BEAST.

Originally Posted by TT572ZZILLA

SWITCH TO A SINGLE PLANE INTAKE,980 CARB TUNED TO YOUR CAR,RUN A HYDRAULIC ROLLER 256/268 @50 .625 I/E 110LC@ 108CL W/1.75 ROLLER ROCKERS. GET THE C/R UP AROUND 10.9:1 OR MORE., 2.250 PRIMARY TUBES W/3.00-3.50 EXHAUST W/FLOWMASTER 40's [3.50 I/O]
OR YEA FINISH PORTING YOUR HEADS&INTAKE, MAKE SURE YOU HAVE A CLEAR FLOWPATH IN&OUT YOUR BEAST.

Alright, let me say.... this is a 88 chevy truck.. i expect 375-400 HP with 400-425 lb/ft tq. I am not drag racing this truck. I plan on spinning it 6000 at the most. I need low end grunt. But thank you for your radical input. Its nothing huge. I need someone to desktop dyno this combo. I dont want to run a roller, as they are more high maitenance then a flat tappet, and less reliable. Also, a 980 carb is way to big. I only have a 396 mind you. and i have stock heads, slightly ported.

i dont have desk top dyno i have a real dyno.you should make around 400hp the heads and cam are holding you back a little.it's a good combo if you were to go up a little on cam it would help the bb breath.soming like 530-550lift and 234 -240 at .050.leave lobe separation 110-112.it would pull good from the hole and give you a little more uptop.750 ok intake ok put a 1inch carb spacer and good ign.

Originally Posted by 555nova

i dont have desk top dyno i have a real dyno.you should make around 400hp the heads and cam are holding you back a little.it's a good combo if you were to go up a little on cam it would help the bb breath.soming like 530-550lift and 234 -240 at .050.leave lobe separation 110-112.it would pull good from the hole and give you a little more uptop.750 ok intake ok put a 1inch carb spacer and good ign.

yeah im debating whether to get the Xtreme Energy XE262H cam, which is
Lift: .504''/.510''
Duration: 262°/270°
RPM Range: 1300-5600
I want this to be a streetable engine. im jus curious as to whether i am going to need to run a stall for that cam. any input?

i have 402bbc in my truck almost same stuff you have my cam is 545 lift 238-242 at .050 lobe separation 112. dual plan intake 750 holly it pull the car trailer all day long i have stock stall speed but a new conv.

Well, according to compcams, the next cam up, which is the XE274H, requires 2500 stall. I think for the cam, the biggest I would want to go is the XE268H.

This is their "description" as the biggest compcam for stock converter.
Good for street machines, slightly rough idle, stock converter.

Operating Range: 1600-5800 RPM
Duration Advertised: 268° Intake / 280° Exhaust
Duration @ .050'' Lift: 224° Intake / 230° Exhaust
Valve Lift w/1.7 Rockers: .515'' Intake / .520'' Exhaust
Lobe Separation Angle: 110°

can someone do my above combo on desktop dyno with these two cams.

the first one
Operating Range: 1600-5800 RPM
Duration Advertised: 268° Intake / 280° Exhaust
Duration @ .050'' Lift: 224° Intake / 230° Exhaust
Valve Lift w/1.7 Rockers: .515'' Intake / .520'' Exhaust
Lobe Separation Angle: 110°

Second one
Operating Range: 1300-5600 RPM
Duration Advertised: 262° Intake / 270° Exhaust
Duration @ .050'' Lift: 218° Intake / 224° Exhaust
Valve Lift w/1.7 Rockers: .504'' Intake / .510'' Exhaust
Lobe Separation Angle: 110°

i have engine pro not desk top it made 401hp 453tq peak with small cam with bigger one 420-450peak both with very good low numbers.

Thanks a lot. Thats approximately what I was estimating. That helps a lot.