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Old 03-10-2008, 07:55 PM
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parts combo for 400 sbc in daily driver pickup

i am building a 406 sbc 2 bolt main for my 1986 chevy 1/2 ton truck. so far i have a stock replacement scat crank, clevite p series bearings, stock harmonic balancer and flywheel, and 5.7 in. "X" rods with kb 126 d dish pistons. i am wondering if the parts i am planning on buying would work well with my combination. my truck has 3.08 gears and 28 in. tires. the truck will be used for daily driving with MABEY a pass or two down the track. im looking to make between 350 and 400 hp. thanks for any help.
OE replacement Melling std. volume oil pump & pickup
stock oil pan
mr. gasket kit
Cloyes heavy duty timing chain
world s/r torquer heads 67cc chamber
lunati voodoo cam & lifters 219/227 @ .050 and .468/.489 lift
comp pushrods
comp magnum roller-tip rockers 1.6
edelbrock performer air-gap intake manifold
summit fuel pump 80 GPH
reman. q-jet 750cfm from jegs
rebuilt HEI distributor
hooker competition headers 1 5/8
dual electric fan
i was told by another member of this forum that the voodoo cams require beehive springs and they could get costly.
would anyone recommend another cam or is the voodoo good? thanks again

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Old 03-10-2008, 10:23 PM
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Don't need a beehive spring for that cam. I'd really consider a set of Iron Eagle heads versus the S/R Darts. The IE's will make quite a bit more power.

That cam works just fine in a truck like yours. I did an EFI'ed 400 with that cam that went in a truck and it worked well for the customer. It made 360 HP and 450 ft/lbs of torque SAE corrected. We used crappy L98 heads. It was done at 5000 RPM.

I'd really consider running a small cap distributor with a stand alone coil. It will make more torque than the HEI. Tested it a zillion times on the dyno. Don't know why, just does.
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Old 03-10-2008, 10:42 PM
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sound pretty close to my build as well but I'm going to use the (crappy?? please explain) L98 head w/ k/b dish piston.
you could get the scat 9000 crankshaft New in box off e-bay for cheeper than 200$ Thats what I did you should check that out.
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Old 03-11-2008, 02:48 PM
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[QUOTE=(crappy?? please explain) L98 head [/QUOTE]

Crappy being, poor port, poor combustion chamber, poor power maker. That's in the context of comparing against a Dart iron Eagle, Brodix, Vortec style head. Compared against a 305 style head, much better.
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Old 03-11-2008, 04:44 PM
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From: David Vizard's book How to Build Chevy small blocks on a budget. Good Book!

P 89, He gives these World Products SR Torquer heads his 5 Star award! "The head has excellent port velocity for a torquey engine in the 1,000 to 6,000-RPM range. The swirl developed was about eight to 10% better than the aluminum Corvette head described nearby."

BBP
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Old 03-11-2008, 05:32 PM
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parts combo for 400 sbc in daily driver pickup

Quote:
Originally Posted by BUFFALOBILLPATRICK
From: David Vizard's book How to Build Chevy small blocks on a budget. Good Book!

P 89, He gives these World Products SR Torquer heads his 5 Star award! "The head has excellent port velocity for a torquey engine in the 1,000 to 6,000-RPM range. The swirl developed was about eight to 10% better than the aluminum Corvette head described nearby."

BBP
that is the book that i read that helped me decide to use the world heads. they are also the cheapest good performance heads that i have found so far that dont require any machine work. i was going to use vortec heads but i dont have any good machine shops around that can do good head work. and the extra money you have to spend buying special vortec head parts. one question though, would the springs that come in the assembled heads be able to handle the lift on the voodoo cam above?
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Old 03-11-2008, 07:43 PM
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Quote:
Originally Posted by 86sdub
that is the book that i read that helped me decide to use the world heads. they are also the cheapest good performance heads that i have found so far that dont require any machine work. i was going to use vortec heads but i dont have any good machine shops around that can do good head work. and the extra money you have to spend buying special vortec head parts. one question though, would the springs that come in the assembled heads be able to handle the lift on the voodoo cam above?
The springs that come on the S/R torquer's can handle 560 lift, and they flow about 75%. I've got a set on my 350 sbc, which has a snappy throttle responce A lot of guy see the S/R and thing that there just a stock head, but they say they add about 30 hp more. But be aware that the heads with the 76cc chambers can only be shaved about .021 which .007 takes off 1cc. Plus when i purchaced mine brand new, they were worped a tad, and took atleast .007 to clean them up. (No Joke)
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Old 03-11-2008, 07:50 PM
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.468/.489 lift with 1.5 rockers

with 1.6 rockers (1.6 / 1.5) = 1.06666666

1.06666666 x .468 = .499
1.06666666 x .489 = .522

http://store.summitracing.com/partde...5&autoview=sku

says max lift = .560 so your good to go.

BBP
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Old 03-11-2008, 08:16 PM
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Quote:
Originally Posted by BUFFALOBILLPATRICK
.468/.489 lift with 1.5 rockers

with 1.6 rockers (1.6 / 1.5) = 1.06666666

1.06666666 x .468 = .499
1.06666666 x .489 = .522

http://store.summitracing.com/partde...5&autoview=sku

says max lift = .560 so your good to go.

BBP
so should i use the 1.6 or 1.5 rockers?
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Old 03-11-2008, 08:18 PM
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Quote:
Originally Posted by streetmaster42
The springs that come on the S/R torquer's can handle 560 lift, and they flow about 75%. I've got a set on my 350 sbc, which has a snappy throttle responce A lot of guy see the S/R and thing that there just a stock head, but they say they add about 30 hp more. But be aware that the heads with the 76cc chambers can only be shaved about .021 which .007 takes off 1cc. Plus when i purchaced mine brand new, they were worped a tad, and took atleast .007 to clean them up. (No Joke)
i was going to use the 67cc head because my pistons are a 30cc dish. you really had to shave brand new heads why is that?
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Old 03-11-2008, 08:28 PM
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I went with the 1.6 rockers
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Old 03-11-2008, 08:38 PM
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Quote:
Originally Posted by 86sdub
i was going to use the 67cc head because my pistons are a 30cc dish. you really had to shave brand new heads why is that?
I guess it depends on how they are stored= if they had them standing up, or sitting face down. They warnt whorped by much= .005 i think. The shop i have all my work done at, advised me of this problem, he waited, i checked it out, shore enough they where whorped. Yep you can believe it, a brand new head was whorped.
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Old 03-12-2008, 08:06 AM
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My Dad had a 77 Elcamino and decided to put a 400 in place of 305. So we built one with stock heads and crank along with .030 dish piston with 276 comp cam. We tried several intake manifold, first try the Offenhuser duel port It ran very well the tried Eldebrock Sp2P it the worst one we tried,, The best performance overall is a Aluminum intake off 327 350HP corvette it is superb on torque all the way up to 4500+ rpm.. It ideal for daily street driven. We did use a 600 cfm Holley for carburation.
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Old 03-12-2008, 07:55 PM
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I ran the S/R Torquers on my 408 sbc in my old 1983 4x4 long bed and this was with a 6" rod and flat tops with a XR282 roller. Had extremely great torque and would easily smoke the 35" boggers I had on it but lost the power in the upper band so that when went to a set of Summit-prepared Sportsmans. The S/R Torquers are a very good aftermarket head in the 170cc intake range. As far as the Voodoo cams, have no idea as all I ever ran was Comp
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Old 03-13-2008, 03:40 AM
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400 build up.

My concern wouldn't be with the heads but with the 5.7 rods. The stock 400 rods are 5.56" long and have a special design for the rod bolt which is slightly shorter and also has a tapered upper shoulder that a 5.7 rod does not have. You will have to check the clearance between the rod bolt and the cam lobes. High lift/long duration cams in this application with 5.7 rods can have clearance issues. There are cap screw type bolted rods available from Scat and Eagle that are designed for this application that have no interference issues. By the way, don't forget to use the head gasket as a template and drill the steam holes in the heads. These are necessary on a 400 SBC. Just my 2 cents worth.
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