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Blown pump gas 588 BB Chev build

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steelcomp

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Discussion starter · #1 ·
This is another marine build, but it would be SO at home between the fenders of one bad a$$ Chevelle. :thumbsup:
It's been a long build and finally getting near finished. It's not quite done yet as we're still waiting on a few more parts, but the hard part is done.

Here are the build details:

588ci BB Chevy, 1471, pump gas, 8.45:1cr
4.56 bore x 4.50 stroke
Dart Big M block 10.2" tall deck w/ billet caps
Bryant billet crank with a bunch of Mallory
JE reverse dome pistons
JE 52S .200" straight wall wrist pins
Total Seal AP series rings; steel top, Napier 2nd, high tension oil.
Oliver billet 6.535" rods
ARP hardware throughout
Canfield 310 heads (ported to 335cc)
Straub custom 4/7 swap solid roller
T&D shaft rockers
.903 Morel Ultra Pro lifters
Smith Brothers 7/16x3/8 single taper .120 wall push rods
Jessel belt drive
ATI damper
MSD crank trigger

Block prep; as usual, lots to be done here:



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After the block is prepped, it's ready for machining. All our block machine work is done on a RMC V30 4 axis CNC. This block was bored, decked, and had the lifters bored for .903" lifters, while at the same time correcting any location errors (indexing to cam). We also check the cam tunnel for location and straightness. The mains are also checked and honed as necessary.

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Discussion starter · #2 ·
Re: 588 BB Chev/1471 pump gas blower build

While some of that is going on, the rotating assembly gets balanced. This is two days into this balance job, having to add ten slugs of mallory in four different countrer weights. Sometimes that's what it takes to do it right. The machine shop lets me do the balancing on my builds. Note to self: there is no money in balance jobs.

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After that's all done it's back to my shop and time to start with the mock-up and test fitting. Here's what you can run in to, even with the best parts;

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After I get it so the crank will spin, it's time to hang a rod and piston and see how that's working out;

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Everything looks good there with plenty of clearance, so it's time to finish the rest of the block mods. The main caps all get detailed including the rear cap's oil passage (like all oil passages in the engine)...

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...and with this build we chose to install piston oilers to help keep the pistons cool during those long WOT runs across the lake. Here, I'm detailing the sharp edg that the oil transfer slot leaves in the main bearing oiling passage. I don't like sharp edges in places like this.

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It's kind of a tedeous installation, but if you take your time it can come out nice and be well worth the effort.

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You can see the brass oil squirters sticking out of the top of the main bulk heads:

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Discussion starter · #3 ·
Re: 588 BB Chev/1471 pump gas blower build

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More mock up; The rear piston squirter is real close to the oil pump drive shaft, so that needs to be checked;

Rear cap, oil pump, drive shaft and dist. all installed:

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You can see how close it is:

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Good time to check out the oil pump and give it a once over. Clearances checked and a good blending and deburring of the housing are in order:

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Minor mods to the pick-up were necesary; the bracket needed some obvious clearance:

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Pan fit, and pan to pick-up clearance is checked, and in this case both needed some serious adjustment. This oil pan is as big as a suitcase!

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Pan needed to come forward some and was hitting the rear cap:

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You can use a little clay on the rear cap to check clearance there:

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Pan to pick up clearance was over 1" to start, so I had to cut the basket loose and move it up (down) the pick up tube. Fortunately there was enough tube inside the basket to adjust. Final check with clay showed about 1/2" clearance before tightening the pan. Should net a little less than 7/16".

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Discussion starter · #4 ·
Re: 588 BB Chev/1471 pump gas blower build

Now we can move forward to the cam, mocking up the belt drive, checking thrust and degreeing. Thrust was set at about .007".

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I had to make a cam installation tool for the belt drive installation, which has a left hand thread. Degreeing this style Jessel requires removing the cam "gear" and rotating it, so this tool also made quick removal, adjustment, and re-installation that much easier.

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Once that's all done, it's time for bearing clearances and getting ready to install the rotating assy.

I decided to give coated bearings a try and went with a new company in the coating industry, Power Coaters, a division of our very own Straub Technologies.

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Discussion starter · #5 ·
Re: 588 BB Chev/1471 pump gas blower build

OK, bearings checked and clearances set, rings gapped, everything final cleaned, ready to assemble:

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Piston/rod assemblies get racked for installation:

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Fast forward through this part; rotating assembly installed. New ARP hardware replaced the original Dart main bolts.
Kind of a shame to have to cover up all these purdy parts;

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Little black paint on the block, front cover install, oil pan goes on, bottom end sealed up, and you pray at this point you haven't forgotten something.

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Other than going completely exotic, this is about as nice as it gets for a BB Chev bottom end/short bock.​
 
Discussion starter · #6 ·
Re: 588 BB Chev/1471 pump gas blower build

Cam instalation was next; thanks to CStraub for what we hope to be another home run grind.
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Button up the front, and it's on to the cyl heads.

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The heads are Canfield 310's, hand ported, 2.30 Rev intake, 1.88 Ferrea SuperAlloy ex, Pac endurance series springs and complete T&D shaft rocker valve train.

Here's a thread on the heads: Canfield 310's for blown 588

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Heads get installed with Cometic gaskets and ARP studs:

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Then it's time to set rocker stand heights for correct geometry and measure for pushrods. This is best done at the retainer with full valve spring pressure:

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With that, pushrods are ordered. For this build I chose Smith Brothers 7/16" x 3/8" single taper, .120 wall pieces. The lifters are .903 Morel Ultra Pro.
With the pushrods thoroughly cleaned and ready to go, it's time to biuld the rockers and install the valve train. Rockers are 1.7 and have holes drilled for optional spring oiling.
The lifters were thoroughly cleaned in clean solvent to get rid of all the assembly grease. I was told long ago this grease was only for assembly and not intended for a running engine. After the cleaning, they were soaked overnight in oil.

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Discussion starter · #7 ·
Re: 588 BB Chev/1471 pump gas blower build

More valve train 'cause this is the cool stuff
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Fully ported Blower Shop manifold matched to the Canfield heads;

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MSD crank trigger distributor installed (with some slight intake manifold modifications) and MSD 8.5mm Super Conductor wires made up to custom lengths.

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And what's a blower engine without a blower! Not exactly the 1471/Super Chiller combination that will ultimately end up on it, but good enough for a visual.

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There we have it for now. Not too many expenses were spared on this build and I have to thank Ed for his confidence and trust. Hopefully he can keep the parts coming and we can get this thing on the dyno in the next few weeks.

I also want to give a shout out to Lesco machine in San Luis Obispo for their great work...these guys rock.

Any guesses??
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#9 ·
I love these threads from you!

Not many guys with shops will go out of their way to document and post pictures and give little secretes away on builds!

Aaron
 
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Discussion starter · #18 ·
GRN69CHV said:
"This is another marine build, but it would be SO at home between the fenders of one bad a$$ Chevelle"

A 588" NA is more than enough for any Chevelle drag car let alone a "street car". A 588" with a 14-71 on top, is possibly exploiting the limits of impractical?
Click to expand...
Hmm. So let me understand...a 69 Chevelle with 540ci, a bench seat, AC and is "slowed down to run 11's" is "practcal"??:confused:

;)
 
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steelcomp
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