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JimChevy said:
Who sells Vortecs already setup for a higher lift cam than stock?
Scoggin-Dickey does...or do what I do, have a stock set modified locally.
Got a fresh set of -906 castings in my shop now with screw in studs and Comp 981 springs "headed" for a Voodoo cammed 383.
 
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Just a general FYI, I called a local shop (Michael's Racing Engines in Macedonia, OH) about modifying a set of Vortecs and was quoted $58 to cut the guides, and $75 to remove/re-install the valve springs. Obviously if you need new springs for your bigger/better cam, add that onto the cost.

And Holley does indeed make a Vortec Stealth Ram -- I have one on my E-Tec heads. The bare manifold is Holley #7542 -- #7542P if you want it polished.

I made the decision in my mind that Vortecs are the way of the (forseeable) furture. No one disputes the power they make, it's just a matter of costs. I have E-Tec heads on my Chevelle and a set of Vortecs destined for dad's Vette.

-Dave
 
The real testament to how well the vortecs work is how much torque they make on a well built 400 small block. I love them, and I actually prefer the centerbolt valve covers and intake bolt arrangement.

Bill
I have about 425lbs-ft, again with almost no work done to the ports.
 
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The real testament to how well the vortecs work is how much torque they make on a well built 400 small block. I love them, and I actually prefer the centerbolt valve covers and intake bolt arrangement.
Bill I take it you are running a pair of Vortecs on a 400? Please tell me more....I have a 400 I hope to build soon to be a hot street engine and am undecided on if I want to run Vortecs or AFR's...
 
Bill I take it you are running a pair of Vortecs on a 400? Please tell me more....I have a 400 I hope to build soon to be a hot street engine and am undecided on if I want to run Vortecs or AFR's...
Don't have the 400 anymore, it was in my last car (malibu). The vortecs are great because of the price and how well they produce torque to motivate a heavy car. They are a great head for the money. Also, I think there is something to be said for having a clean, factory engineered head on a motor. Just seems like everything goes together easier.

Now, if I had to do it over and had the money.....AFR's or a Set of Pro 1's would be going on it. You'd only loose a little torque, but the extra horsepower, detonation resistance, and weight reduction would be worth it. Here's a build up of a Vortec 406.

http://www.chevyhiperformance.com/techarticles/148_0306_chevrolet_406_big_block_torque/

Good Luck,
Bill
 
Of course I don't know how inflated the numbers are, but they say they used the Lunati 00010LK hydraulic flat tappet cam (230 dur, .480 lift, 109 LSA), a 750 Holley, 1 5/8 headers, 9.5:1 compression, 1.5 roller rockers....428 hp @ 5000 rpm and 525 tq @ 3500.....sounds awfully nice....that's something like what I'd like to get my 400 to do....:thumbsup:
 
Of course I don't know how inflated the numbers are, but they say they used the Lunati 00010LK hydraulic flat tappet cam (230 dur, .480 lift, 109 LSA), a 750 Holley, 1 5/8 headers, 9.5:1 compression, 1.5 roller rockers....428 hp @ 5000 rpm and 525 tq @ 3500.....sounds awfully nice....that's something like what I'd like to get my 400 to do....:thumbsup:
Yeah, I'm always hesitant to post dyno numbers because there is so much uncertainty around them. I always just take them with a grain of salt. Worst case though, even if they are off 10 percent, that's still a heavy hitter for what amounts to a simple 400 short block, a cheap cam, and a $700 set of heads.

good luck with the build up,

Bill
 
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