Engine Mods Outrageous Builds, High-Horsepower Modifications, strokers, and big cams for the Corvette

383 build up....

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Old Jun 21, 2002 | 06:28 PM
  #1  
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Default 383 build up....

I was reading the forums on Supercars.net and this guy posted this...
Instead of buying that expensive $2K short block, why not start with a Goodwrench 350 deluxe long block (block, heads, internals, cam, valve covers, oil pan), pick up one for $1289.95. Try a low-priced 383 stroker from Speed-O-Motive for $460. Couple this with a $449 set of GM Vortec heads, and yeild a friendly 9.3:1 compression ratio. Next, try a Crane hydraulic roller camshaft with .431" lift at $134.95. Add on top, a great high-rise dual-plane Z/28 intake for $139.95. Top it off with a new 670 cfm Holley Street Avenger carb ($359.95), a 14" low-profile air cleaner ($19.95), and a high-performance HEI distributor ($189.95), and there you go. Total price: $3,043.70
Would this work, and if so, what kinda power?

:cheers:
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Old Jun 21, 2002 | 06:33 PM
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Default Re: 383 build up.... (Micky T)

Speed-O-Motive used to be one of the best places to buy stroker kits. It's been around since the 1940s and that's how it made its bones.

However, I've heard lots of bad things from several sources over the past couple of years or so about Speed-O-Motive. Seems things may have become more, uh..profit-oriented after a possible ownership change. (Offshore parts, high volume, high pressure, sell, sell, sell.)

I'm not slamming them because I don't have any personal experience. Just filling you in. There are other places to get stroker cranks. Like maybe Scat or Eagle?


[Modified by The Dude, 2:34 PM 6/21/2002]
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Old Jun 21, 2002 | 06:37 PM
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Default Re: 383 build up.... (The Dude)

Speed-O-Motive used to be one of the best places to buy stroker kits. It's been around since the 1940s and that's how it made its bones.

However, I've heard lots of bad things from several sources over the past couple of years or so about Speed-O-Motive. Seems things may have become more, uh..profit-oriented after a possible ownership change. (Offshore parts, high volume, high pressure, sell, sell, sell.)

I'm not slamming them because I don't have any personal experience. Just filling you in. There are other places to get stroker cranks. Like maybe Scat or Eagle?


[Modified by The Dude, 2:34 PM 6/21/2002]
Alright, thanks, I will think about this option... :cheers:
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Old Jun 21, 2002 | 08:17 PM
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Default Re: 383 build up.... (Micky T)

here ya go--

4 bolt block, preferably an L82, from yard-- $100
eagle 4340 3.750 crank-- $470
eagle h-beam 4340 6" rods-- $300
srp forged flat top pistons-- $450
crane Hydraulic roller (PN 119651)cam,
lifters, & pushrods-- $630
used victor jr intake-- $100
ARP main & head studs-- $150
roller timing chain, aluminum water pump,
7 qt pan, HV oil pump-- $320
MSD mag distributer, 7AL2 ign control,
blaster coil-- $500
holley 4150 850 cfm-- $420
AFR 210 heads-- $1500

total-- $4940

estimated HP/torque(using destop dyno 2000),
approx 10.5 comp-- 542 HP/531 ft/lbs

with that combo you posted,
using the same cam as the one above-- 448 HP/483 ft/lbs
(couldn't find any numbers on the cam you posted)





[Modified by blue_stingray, 6:21 PM 6/21/2002]
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Old Jun 22, 2002 | 02:24 PM
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Default Re: 383 build up.... (blue_stingray)

I just finished the bottom end on mine, I put in the scat crank, Dart heads, crane cam extreme and new pistons, actually other than the block everything is new. Will update you next week when top end assembled and block is in.
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Old Jun 22, 2002 | 03:08 PM
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Default Re: 383 build up.... (Micky T)

This months Car Craft does a 383 buildup. The end result is 540 hp and over 500 tq. Their cost was 4400 I believe. 383 shortblock w/AFR heads, solid roller cam. I don't recall how many forged parts were included to make things hold up.
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Old Jun 22, 2002 | 11:55 PM
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Default Re: 383 build up.... (Micky T)

I don't understand the logic of buying a long block engine and then replacing almost all of it's components except for the block. Why not just buy the SpeedoMotive 383 short block for $1400 and add the other components mentioned? That guy didn't include the cost of the roller lifters but, at that price and wimpy lift, I don't think he's taliking about a roller cam anyway (but probably thinks he is).
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Old Jun 26, 2002 | 05:51 PM
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Default Re: 383 build up.... (Micky T)

check out http://www.allchevyengines.com i got my 383 for $4000.00.(minus carb,intake,oil pan,fuel pressure reg,ect) i only have 350 miles on it so far but everything seems great. :D the engine i have has all quality parts that if i was to build it myself it would cost much more. :yesnod: good luck! :cheers:
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Old Jun 26, 2002 | 06:07 PM
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Default Re: 383 build up.... (blue_stingray)

blue_stingray - has a closer figure for a performance motor. Maybe even low because a raw borable higher quality 3970100 four bolt still needs $500 + in machining (bore & hone) (rod clearancing) (blue print block for studs)

A smart person would not build a 383! go for 396 with the 3.875 stroke
He also left off the roller cam button timing cover.


[Modified by gkull, 2:41 PM 6/27/2002]
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