critique the final combo - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 01-10-2006, 12:47 PM
Join Date: May 2003
Location: m-Town, OH
Posts: 58
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
critique the final combo

finally decided where im going to go: let me know what you folks think
404 sbc
dart pro 1 200cc alum, blended bowls, matched ports
Voodoo cam: 233/241 (.504/.525) (@.050)
Comp ratio: 10.0:1(id like to go higher)
RPM manifold: port matched
EdL 750 carb
curved stock dist w/ accel xr-i(looking to replace perhaps)
Th-400: 3000 stall, kit
fresh eaton posi, 3.42 gears
1 5/8 headers,cutouts for track
Sfi 8000 rpm balancer
car is a 71 caprice with some weight removed(3900lbs w/ driver)
think ths thing will fly or not? im hoping for mid 12's @ 105 hopefully
all feedback is appreciated

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 01-10-2006, 01:09 PM
firestone's Avatar
Last photo:
Join Date: Nov 2003
Location: Fenton MI
Age: 33
Posts: 1,743
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Everything looks pretty good to me. I think it should make a good 450 hp.
Depending on how much porting you do it could be more. If you assume 350 at the rear wheels, according to the calculator below you might catch a high 12.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-10-2006, 01:52 PM
Join Date: May 2003
Location: m-Town, OH
Posts: 58
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
should i have the runners gone over? i dont know if its worth the extra cash just for a few ponies. any other way i could squeeze a few more hp outta the setup?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 01-10-2006, 02:20 PM
Join Date: Dec 2004
Location: Madison, WI
Posts: 1,885
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
I would not go into the runners. First, your camshaft is quite small and the lift quite low. Concentrating in the short side, bowl, and chamber, along with valve selection is where I'd suggest sticking to. You want flow improvments under .500 cfm. Runner hogging is not going to change much below this point. Obstructions around the valve will.

I'd also suggest not purchasing the camshaft until you have the heads flowed, ported and then reflowed. You may end up cutting back on the exhaust bias and even getting a bit more lift ground into the camshaft. The flow figures determine the camshaft. Syncing these two parts is how you wlll optimize the power. I'd also like to see bigger headers on the engine, 1 3/4. An 8000 RPM balancer SFI approved is not really worth the cost of the sticker. The same balancer, non SFI approved will save you some cash.
Reply With Quote Quick reply to this message

Recent Engine posts with photos
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
Please critique my combo 1985fiero Engine 13 06-17-2005 10:06 PM
Please Critique Cam and Combo for 383 Chevy21 Engine 7 04-01-2005 01:50 AM
406 critique my combo please!!! HoosierDaddy Engine 22 02-17-2005 08:53 PM
my 350 engine combo questions mcmike Engine 7 01-16-2004 12:00 PM
Critique my SBC 400 Combo DTL504 Engine 24 11-30-2003 06:37 PM

All times are GMT -6. The time now is 06:33 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright 1999 - 2012. All Rights Reserved.