GREGGPENN

Tomorrow, I bring my 383 home.

Today I took the manifold, headers, and valve covers up for a test fit/pictures. With the exception of the valve cover baffles, everything fits well.

(I have to remove some material from the valve cover baffles so they'll drop down between the Pro Magnum rockers. My port matching lines right up to the heads. (No offset from side-to-side!)

Here are the pics that came out best....Hope you like.









I included this last one, taken with my camera phone under shop lights.

GREGGPENN

Seasoned 4-bolt 350 factory block, bored .030" over (zero deck)
10.2 Static Compression, 8.2 Dynamic Compression

Wiseco 468g 20cc dished pistons for 5.7" rods
Scat 4340 I-beam rods 5.7"
Scat 9000 Pro Comp Crank (1pc RMS)

AFR 195cc L98 heads (#1040, angle-milled to 56cc chambers)
7/16" studs, spring upgrade (155psi)

216/216 Bullet cam .544"/.544" 108ICL 112LSA
1.6 Pro Magnum Rocker Rollers
Renegade .080" wall 1-pc hardened push-rods (AFR guide plates)

Vette Tech Tri-Y Headers (1 3/4" primaries, 2.25" secondaries, with Kook's-style outlet pickle)

SLP/Edelbrock self-polished, self mega-ported and siamesed intake

Pro Sport (Pro Race Series) Harmonic Balancer (6 3/4")

Balanced with new DMF Flywheel

Bobweight = 1789g

ARP Head bolts and main bolts

I hope to land somewhere near this build in power/torque levels.

mack89vette

That is a dream engine.
Its polished so well, I could shave and brush my teeth looking into the plenum.
But it aint no bathroom sink.
You followed your dreams and made it happen. We applaud you.

Aardwolf

Very nice!

You forgot the air foil!

Kubs

Beautiful engine!! Have you used those tri y headers before? What do they do that regular long tubes dont?

Im looking forward to the dyno results (if any) on this engine!

383vett

Nice set up Gregg. Looks like it's ready to be dynoed. Good luck with the install and startup.

5abivt

Beautiful !!!!

cv67

That looks really nice Gregg dig the valvecovers nice touch.

That motor is going to be super reliable and make boatloads of torque, get a sticky tire!

lt4vette

Very nice. I love the valve covers. Odd question, but who did your machine work?

dclafleur

Looks good! Let me know what it puts down, it's a direction I've considered going.

fc_soldier

WoW that is ugly, Im going to have to take that off your hands. Dont worry Im looking out for you.




Nice motor now we need pics of it in its crib.

tombrown

Beautiful engine - a thing of art. That's a lot of compression - how are you going to prevent detonation??

LD85

Stuningly Beautiful!

427c4vette

Sweet. It's almost going to be a shame to close the hood.

dogfish246

He should get a section of Plexiglas for the hood like on the ZR1!!!

NitroNutt

That is awesome. Like the retro Vcovers.

esham

Nice!

GREGGPENN

Thanks for the compliments guys. The learning and thought that went into this took a long time. With every phase, I was balancing several goals. My goals with this build were (in order of importance): longevity, asthetics, torque, power, mpg, and the ability to return to emissions compliance (if necessary in the future). This obviously as much a show-piece as a performance motor. It's a motor 100% intended for the street.

The intake was my first intended mod, but I decided to include headers. That made me think of refreshing my 20-yr-old heads while intake and exhaust were both unbolted. That led me down the road of the best head/porting delimma. The AFR debate finally won me over. I ended up picking the 195 heads largely for their amazing mid-lift flow numbers (especially for their port size). With all that going into a motor, I finally decided I had to figure out a way to build a whole new complete motor. (Bottom end had oil leaks anyway.)

Two forum members quickly convinced me to convert to a stroker -- especially when considering the marginal increase in cost compared to completely redoing a 350. The 383 stroker was my last hurdle and required the most learning and thought. I have several people to thank for advice. My thanks to all of you! (And, especially to a couple of extra-patient, knowledgable advisors.)

As mentioned above, I'm including a couple of pics of the intakes internals. I went ALL the way down the SLP tubes in hopes of making this intake halfway worthy of a 383! I did all the intake porting plus the intake/valve cover polishing.

This pic shows port size compared to stock....


This pic shows matchup between ports....

GREGGPENN

Actually, the compression is not that high. I know members who've gone a full-point higher (static) w/o any issue. Only a couple are above my dynamic number. Again, they are fine.

With a knock monitored motor and electronic distributor, higher compression is not THAT dangerous -- though a concern. Efficient, well-designed alum heads, good quench, inverted dome shapes (to consolidate the charge), timing/tuning, and cooler running temps (185-210) all help to manage the threat of detonation. Using good gasoline helps too. (I have a 92 octane station nearby.)

It'll be fine.

PLRX