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598CI Build

 
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mike87
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Joined: 26 Apr 2007
Posts: 19
Location: Michigan
878.60 points



PostPosted: Wed May 19, 2010 10:49 pm    Post subject: 598CI Build Reply with quote

I am going to start to build a 598ci BBC, here is what im gonna start with: dart big m block, callies 4340 forged crank, callies 4340 forged h- beam rods, srp forged pistons, looking to make anywhere from 700-800hp, was thinking about going with dart pro 1 heads:325cc, 119 chambers, 2.30-1.88 valves, ive never built a big block yet and was wondering how you guys would go at building this engine with what parts, what heads, intake, cam, lifters, rockers, etc. you guys think i should use, it is going to be mostly a streeter, the motor is going in a 4500lb. 4x4 truck, currently have a th-400 built up with a 3000 stahl converter, and a detroit trutrac with 3.73 gears, dont need it to rev any higher than 6500rpm, just want a badass motor than can be driven on the road and be real reliable, was thinking about going with a solid roller, and 10-1 comp.. any help appreciated mike.
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79' 350 block w/ splayed main caps
ohio crank 383 rotating assembly forged 5140 crank, forged I beam Rods, Forged SRP flat top pistons, Dart Pro-1 platinum heads 230cc 2.08/1.60 64cc chambers 11-1 comp. edelbrock rpm airgap intake manifold port matched to heads. comp cams solid roller cam .570-.576 lobe cent-110. comp lifters, summit 1.5-1.5 rocker arms, RCI 19gal. Fuel cell, Holley black HP125 Pump, 1/2 Alum. Fuel line w/AN Fittings


Last edited by mike87 on Thu May 20, 2010 5:26 am; edited 1 time in total
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mike87
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Joined: 26 Apr 2007
Posts: 19
Location: Michigan
878.60 points



PostPosted: Thu May 20, 2010 5:24 am    Post subject: Reply with quote

I did a little research and think i might run these parts:
AFR magnum alum heads- 345 runners - 121cnc Chambers- 2.30/1.88 valves #AFR2110-1 or maybe 325cc runners #AFR2101-1
AFR says the 345cc heads are more for 3500-8000rpm and the 325cc heads are for 3000-7000rpm here are the flow #s of both at .660 lift- 345s: 391/281CFM and 325s: 379/282
Edel. Super Victor Intake #2916
AED Pro-Street 1050CFM Dominator #AED1050PS
howards mech. roller cam .050:248/248 - ADV: 285/285 - LC110
Lift:.660/.660 - #121313-10
Isky Redzone max Roller lifters #272-96-RH
Comp Cams Ultra pro-magnum Roller rockers 7/16 - 1.7 Ratio #CCA1620-16

I know those 345cc heads are not to big for the motor but maybe for what i would use them for, i like the intake flow #s of the 345s there definately higher than the 325s, but the exhaust flow #s of the 325s is just 1 cfm higher than the 345, highest ill probably rev her to is 6500rpm, it sounds like i should go with the 325s unless i get a bigger cam with more lift then those 345s would probably shine more, but i dont want to go to crazy its going to be mostly a streeter.

what do you guys think, Mike

_________________
79' 350 block w/ splayed main caps
ohio crank 383 rotating assembly forged 5140 crank, forged I beam Rods, Forged SRP flat top pistons, Dart Pro-1 platinum heads 230cc 2.08/1.60 64cc chambers 11-1 comp. edelbrock rpm airgap intake manifold port matched to heads. comp cams solid roller cam .570-.576 lobe cent-110. comp lifters, summit 1.5-1.5 rocker arms, RCI 19gal. Fuel cell, Holley black HP125 Pump, 1/2 Alum. Fuel line w/AN Fittings
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Big Dave
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Joined: 04 Dec 2005
Posts: 2550
Location: Tampa Florida
116242.76 points



PostPosted: Thu May 20, 2010 10:13 pm    Post subject: Reply with quote

My experience has been a 4.600 bore is too much for the street. You can not get the rings to seal (or I at least can not get them to seal up at low RPM found on the street) but I am using low tension rings with gas ports (Big-M Dart block was finished honed with head studs in place with an aluminum block plate, using forged (I almost said JE pistons my usual vendor but they didn't have any for me when I built this thing so I bought them from Mahle instead). They are full floating with 6.385" Howards 4340 rods in a short deck block so they have tiny skirts which I think is my problem with the piston rocking and unloading the rings.

Since you have room in a truck I would use a taller deck block with your 4.5" stroke, and run a 4.500 bore. You can always bore it out more latter on a rebuild since you are not going to have to stick to a 500 cube limit under the rules the way a pro stock does and have a trailer full of offset ground cranks to match a 0.004" hone refurbish job from disqualifying you on tear down.

Big Dave
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Blown65
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Joined: 26 Feb 2003
Posts: 152
Location: Edmonton,Alberta Canada
3519.10 points


1965 Chevrolet Malibu

PostPosted: Fri May 21, 2010 1:59 pm    Post subject: 598 build Reply with quote

I'm confused why the 4.5" bore will seal and 4.6" won't. If you put the proper ring in, finish the cylinder with the proper grit, correct piston to wall clearance, proper ring gap, proper break in, and no synthetic oil for at least 2000-3000 miles. What does the extra .100" matter?

Kinda curious


Corey

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Corey
CoMax Racing
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3092

62607.62 points


1979 Chevrolet Camaro

PostPosted: Mon May 24, 2010 7:16 pm    Post subject: Reply with quote

popcorn
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robins44
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Joined: 29 Dec 2007
Posts: 616

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PostPosted: Mon May 24, 2010 7:31 pm    Post subject: Reply with quote

this thing is going to be nucking futz! Cant wait, hopefully he will be a good freind and hook me up with some of his sbc stuff! Does anybody know how much abuse there is on one of these 231c transfer cases when there in two wheel?


Cody
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Big Dave
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Joined: 04 Dec 2005
Posts: 2550
Location: Tampa Florida
116242.76 points



PostPosted: Wed May 26, 2010 12:09 pm    Post subject: Reply with quote

Shouldn't be any at all. There is no power entering the auxilary tranny (other than from fluid friction dragging the parts around) when in two wheel drive.

Big Dave
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nomad239
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Joined: 01 Jul 2007
Posts: 7

291.86 points



PostPosted: Sun Dec 05, 2010 5:30 pm    Post subject: afr 315 cnc Reply with quote

USE THE AFR 315CNC CYLINDER HEADS.YOU SHOULD ALSO CONSIDER ZERO GAP RINGS.
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robins44
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Posts: 616

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PostPosted: Sun Dec 05, 2010 8:51 pm    Post subject: Reply with quote

Sadly this build never happened, decided to stick with his 383, which is no slouch btw.



Cody
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