What can I expect in terms of HP and TQ?

Stock bottom end vortec 350
Comp cams XR264HR 0.487/0.495 lift, 264/270 duration
Vortec heads
Performer RPM Air-Gap intake
Full length 1 5/8 in. primary headers into single 3 in. exhaust
Edelbrock Thunder AVS 650CFM carb
MSD Ignition

Thanks.

 

Sounds similar to this 447 hp build,

http://www.popularhotrodding.com/eng...k/viewall.html

 

Comps test, with crappy heads,

http://www.compcams.com/Technical/Dy...4HR-10_001.asp

 

Gonna get on you some John.Why do you bother reading this glorified bench racing meaningless articles??. Even if there was some value,those "stories"always leave key parts out.

With rock stock Vortec heads,no way mid 4's!!!!.

Dyno tests are only as good for that moment in the dyno rm which is a controlled environment having nothing to do with real life situations.The only tuning that matters is at the track where what you do makes a difference and the times don't lie.

Gezzz John you know this stuff.

 

I just googled his info and this came up.

Never built this combo myself so I could not say, for sure. I wasn't trying to say it was a 447 build, but just showing him what others are claiming.

Do you have a guesstimate for the OP?

 

John,I'm more of a hard facts kind of guy at the track.

Not a negative post my me in any of these threads.The reality check come to play once you accept the advertising business and the goals of this magazines is to support their advertisers.The ad business is the second most tough business in the world right behind entertainment.They really don't give a damm about hot rodders.

 

Do you have a number for the op?

 

Using CamQuest it predicted 373HP @5000 rpm and 414 TQ at @4000 rpm but that seems like a stretch...

 

I plugged the info into desktop dyno (probably useless though )

peak hp 374@5000 rpm
peak tq 451@3500 rpm

434ftlbs@2000rpm

Take it for what it's worth

 

Like I said John.Trackside test and tune I'll get him a number.

The torque side of yours I think is abit high.