chevy 350 mild motor - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 01-03-2012, 01:45 PM
Registered User
 
Join Date: Oct 2011
Location: jamestown
Posts: 9
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by techinspector1
When I was in Phoenix and had my other computer there, I used to do quite a few dynosim combinations for some of the fellows on here. One of the nicest liittle 350 builds used #12407 RHS bare heads with valves, seals, springs, retainers and locks in a kit, all from Competition Products. The intake runners are 170cc. Use the 1.94"/1.50" valves in a street motor.
http://www.compcams.com/Company/CC/c...x?csid=72&sb=0
I'm thinkin' the heads complete are around $700.00 or a little more. You can't rebuild your junk heads for that.

355 Gen I Chevy street motor, 453 HP, 475 ft-lbs torque.
Block: '68-'86 Chevy 350 Gen I bored +0.030".
Crank: Stock 350, 3.48" stroke, 2.450" main journal diameter.
Rods: Stock 350 5.7". Recommend ARP bolts, re-size big end.
Pistons: Keith Black hypereutectic, part #KB193, 12cc D-cup, 5/64,5/64,3/16 rings. 1.561" compression height. Gap top ring 0.026", second ring 0.018".
Heads: RHS Pro Torquer Vortec 170-64, 2.02" intake, 1.60" exhaust. These heads will accept either conventional or Vortec type intake manifolds. They are drilled and tapped for both types.
Intake manifold: Dual-plane, high-rise such as the Edelbrock RPM, Weiand Stealth or Professional Products Typhoon.
Carburetor: Vacuum secondaries 750 CFM.
Headers: 1 3/4" primaries, long-tube, equal-length. Install "X" pipe between collectors and mufflers. Run 2 1/2" pipe to the rear through mufflers of your choice.
Camshaft: CompCams flat tappet hydraulic 260H: [1], installed straight up.
Rocker Arms: 1.6 ratio on both intake and exhaust.
Static Compression Ratio: 9.6:1
Dynamic Compression Ratio: 8.4:1
Squish: 0.035" to 0.045". Zero piston deck height with 0.035" to 0.045" head gasket or 0.010" to 0.020" piston deck height with Victor Reinz #5746 head gasket that compresses to 0.025".

RPM HP TQ 1000 59 310
1500 103 361
2000 150 395
2500 192 402
3000 246 431
3500 306 459
4000 360 473
4500 407 475
5000 442 464
5500 453 433
6000 450 394

Stock converter and stock rear gear will work, but would be more fun with a converter that stalls at 2000 to 2200 rpm's and a 3.73 gear. The most out-of-whack spec on this build is the fact that RHS flows their heads on a 4.200" pipe. The resulting flow numbers bear little resemblance to real-life flow on a 4.030" cylinder bore. If you want closer to real, multiply these hp/torque figures by 0.95.

If I were going to build this motor today, I'd use a Howards hydraulic roller cam with about the same cam timing events.


Built it just like you said and WOW!!! Thanks so much this thing screams and was just what i was looking for perfect combo thanks again!!!

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mild build chevy 350 guts question dadicted Engine 16 10-19-2009 06:26 PM
Chevy Van building mild motor racprops Introduce Yourself 2 09-22-2009 09:16 PM
old chevy motor to new chevy truck pwchevyman1990 Engine 4 03-02-2009 12:36 AM
1971 Chevelle 350 Mild Motor Build seventy3lr Hotrodding Basics 2 02-26-2009 08:27 PM
Can anyone recommend some mild mods for a 5.7 1993 Z71 Chevy truck Axelrod Hotrodding Basics 8 07-02-2004 08:25 AM


All times are GMT -6. The time now is 04:38 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.