vortech vs 347--lets talk

#21
Kenne Bell's are harder on engines than centrifugal superchargers.

If you have the blower, stick with it...and the reason?

If you build the n/a combo (stock block)...and want to put the supercharger on...that will be a no go.

You will make more power with the supercharger (h/c/i)...and drive around more reliably (good tune)...

Or you can go the n/a 347 route, peak it out, and then have to redo everything again so you can get a stronger block...

You can rebuild the heads on the supercharger.

450rwhp is quite hard to come by and be streetable with a 347. I wouldn't want to worry every time I punched it "will something break?".

Also, don't let word manipulation get you...some like to do it like car salesman on here. Example, one might say he does "this"...but has probably done it a couple times...but doesn't relay that crucial information. I have overrevved my car a few times...but I don't tell people I "rev my car to XXXX rpm"...
 
#23
Lots of good advice..
My advice... Build a 347 dart block or build a 351/408 dart block.

Put the S/C on til it is done if you want. A stroker will give you more torque and more fun. S/C will give you more top end (speed) between 3500rpm and 6000rpm. but for that reason is not as usable on the street,(my opnion) while a stroker is definately a street machine.

I have a 347 and a Vortech SQ. I did a H/C/I then a year later Pauls built a short block stroker :D and a year or so later I put the S/C on it. If I had it all to do again a stroker based on a 351 would be my motor. Don't get me wrong I like my supercharger but only usable at high rpm.

Hope this makes sense to you!!
 
#24
I'm in the process of building a 331, with 9:5.1 Compression so i can run some giggle gas. I love the sound of a Centrifigul supercharger, but damn, a N/A car putting out big numbers is down right sexy. I'm only aiming for 300, but i'm hoping for something more along the lines of 400 on gas. ;)
 
#27
the decision will also heavily depend on your budget. a dart block based motor can easily run you around $10,000 by the time all the machining, assembly, and h/c/i etc are purchased. my personal opinion would be to slap the blower on and enjoy it for now since your stock bottom end is healthy. during that time, you can begin your stroker build. i will say, after driving vib's 10.0:1 347 i was really impressed by all of the torque down low. a centrifugal supercharger will be the opposite of that. you will make the most power up top as the boost climbs. again, it really all boils down to personal preference. in your situation, there is no wrong decision.
 
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