cam question

I've been getting some parts together for a pulling truck engine, It will be a stock stroke, bored .06, single plane intake, headers, big 4150 carb. I got a good deal on a set of big valve, ported D0VE heads and comp roller cam form a forum member. Will this cam work ok for me? I think it was intended for a 4.3 stroke build.

cam specs intake exhaust
gross valve lift .787 .726
duration @.02 tappet lift 303 323
duration @ .05 273 288
lobe lift .455 .420

What's the rest of the build? How much compression? Head flow? What trans? Convertor? Gearing?

It's a pulling truck so converter and gearing aren't applicable. It will need to run a lot of RPM though, at least 7500. The only info I got for head flow is 340 @ .8 lift. I don't know what the compression ratio will be. it can run race gas so maybe about 14:1 it will depend on what I get for pistons.

mitch wrote:It's a pulling truck so converter and gearing aren't applicable. It will need to run a lot of RPM though, at least 7500. The only info I got for head flow is 340 @ .8 lift. I don't know what the compression ratio will be. it can run race gas so maybe about 14:1 it will depend on what I get for pistons.

with a set of 3.00 gears,  that cam won't work, unless you have a very- very high % of tq/conv. slip

DanH wrote:with a set of 3.00 gears,  that cam won't work, unless you have a very- very high % of tq/conv. slip

 why do you think I have 3.00 gears 
The gearing will be more like 27.00:1
just want to know how it will run with that cam.

That cam will work, but your going to have to keep the rpm up because it will drop below the power curve fairly quickly.
There will be less than 1000 rpm between torque peak and hp peak more like 7 to 800.

With some intake work you could get that spread wider and pick up some hp also.

If you haven't bought one yet a mafia intake would help with that cam.

thanks i was leaning towards the mafia intake
about what rpm would it peak?

IDT-572 wrote:That cam will work, but your going to have to keep the rpm up because it will drop below the power curve fairly quickly.
There will be less than 1000 rpm between torque peak and hp peak more like 7 to 800.

With some intake work you could get that spread wider and pick up some hp also.

If you haven't bought one yet a mafia intake would help with that cam.  

^^^ sage advice.

What is the lobe separation? Sounds like the cam will do what you're asking, peak torque may be around 6200 give or take and might horse peak around 67-6900 depending on if the heads are good and lobe separation. If the lobe sep is 112 or so it will hold on better. If it is around 108 it will probably never see 7500.

Bret

lobe sep is 110

That's better than a 108.