327 with 6-71 blower....Need help with build up list....

Looking to build a 327 with a 6-71 blower. Have block with 202 heads and steel crank with a large journal....Looking for build list so I can ran about 800+HP safely budget i would like to keep under 6000....Thanks for the help to build 1 bad engine..Looking to put in a 70 Chevelle which is a diffrent story...


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a blown sbc with 800hp for under 6K is an awfully nice pipe dream. Not going to happen though.

YOu'll need some really good forged pistons- I recomend Mahle, that will give you around 8:1 compression with some AFR195's or better heads, a damn good forged crankshaft, probably Callies or equivalent. You'l need the blower and intake, along wht pulley's and 2 blower ready carbs, a good set of large tube headers (headman) a roller camshaft (hydraulic roller ould probably be preferable on the street) all he valve trains parts necessary to turn 7500 rpm (pushrods, rockers, springs, retainers, girdle). A good CD ignition setup is required, along with a dry sump oiling system. I would also go with a BowTie or Dart block. billet rods would be cheap insurance at ths point along with ARP fasteners for everything, a high volume water pump, a gigantic radiator, a trans to put behind it...

If you double your budgt you may be able to scrape by...

Budget and a 800 hp small block don't go together. Billet 4 bolt caps, forged crank and rods, blower pistons, good set of after market heads, overdrive blower set up, lots of carb, great ignition, and lots of $$$$$ for machine work. That engine will easily cost $10,000

Thanks for the reply.....already got block, heads, steel crank, blower, just need info on pistons, rods, cam and valvetrain parts, carbs, and such.....need and idea where i am sitting right now.....i say a budget to be realistic but we all know i would be going over anyways because i want to best....not a budget motor

your heads and crank are going to be even close to cutting it for 800 hp...

You've heard it several times already, but get out your wallet. You won't get near first class or 800 hp for $6k, even with the parts you have. Machine work alone with billet splayed caps and the machining they require isn't cheap by any standard. And 800 "safe" hp out of a 327? Not that you can't pull that kind of power from it, but a 327, 6-71 that will live at 800 hp is not reality.

For kicks,tell us what parts you have on hand to consider in a build list, and be specific.

__________________
''Life's tough, Pilgrim, and it's even tougher if you're stupid.''---John Wayne

Midnight Sun Street Rod Association

Heres my advice.
Ditch the 327 and go with a bigger cubed motor.
The 327 is a great motor, but 800 horses outta it is asking a lot.
600-650 maybe on a semi budget but 800 is way out there.
At least to keep it alive very long. Just my .02 HG

I suggest you contact Blower Drive Service and talk to one of the techs there. Before you call, determine if you have a large bore or small bore blower.
http://www.blowerdriveservice.com/contact.php

Here's a 690 hp 383 built by Air Flow Research. Click on dyno tests at the top of the page, then click Chevy dyno tests, then scroll down about halfway on the page.
http://www.airflowresearch.com/index.php

But in reality, I have to agree with everyone else who has responded. If you really want to build the 327, then cut back a little on your expectations for power. If you really want 800 hp, start with more cubic inches. Just my opinion.

Small bore/large bore:
http://www.fordflathead.com/blowersize.html

This small block is a 383 strocker. Crank, Rods, Pistons, Roller Cam and Lifters, Valves, Springs, Roller Rockers, and All of the Machine Work, was $13,000. It dyno'ed out at 405.5 H/P with 430 Foot pounds of torque. Good luck on 800 H/P.

YOU GOT SCREWED ON THAT DEAL.

Sorry.

I assume this is a street deal. The number 800 hp sounds good
but if it's a street motor you won't be in the throttle for more than 3 or 4 seconds unless your streets have better traction than ours. Econo setup would be 350 pistons with a 327 stroke crank, this puts the pistons in the hole and keeps the compression low. Stock rods with good bolts, steel crank and a good oil pump and pan. The cam should be a blower grind, I recommend Chet Herbert for the correct recommendation for your unique application. You need boost referenced power valves on the carbs also. This won't dyno 800 HP, but will produce a seat of the pants ride that will be reliable if you use common sense driving it.
Blower motors on the street run in vacuum all the time until you put your foot in it. The only time you'll see positive boost numbers is when you leg it. My street rod uses a stripped mag 8-71 with 6% overdrive and only shows + boost when you hammer it, then it's 13 pounds and the tires won't hook up.
If it's a race only setup get your wallet out because what everyone else said is true. Blown gas is not user friendly.

I don't think you'll get your 800hp parameter with a $6k budget. I guess it's possible but 500 hp is probably more like it.

I agree, 500 seems more in line for that size motor. On the street it'll still be a bullet.

you can build more power with a blower than any other speed part. the difference between 500 and 800 horsepower won't be noticed when the tires smoke only when you balance your check book.

No I did not! The Engine is very street-able on pump fuel and built for longevity. It will light up the Mickey Thompson tires in any gear, with only 12 pounds of boost. It is in the 1973 Corvette in my pictures. I was trying to up-load a picture to my post and my laptop broke down for good.