Estimated time and mph - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 07-24-2012, 07:34 PM
Registered User
 
Join Date: Jan 2011
Location: Hopewell, Va
Age: 61
Posts: 1,114
Wiki Edits: 0

Thanks: 0
Thanked 114 Times in 110 Posts
Estimated time and mph

I have a 67 Camaro with a 491 motor. The motor has an Eagle 4.250 rotating assembly with forged crank with Icon .040 forged pistons. It has 10.2 compression ratio with 118 cc heads. The chevy block has been decked with the pistons .005 down in the hole. The quench is at .041. Also has been internally balanced. The camshaft is a Crower mechanical roller #01485. Lobe lift at .050 is intake .377, exhaust .374 and duration is intake .256 and exhaust 266. lobe separation is 107 and intake center line is 103. The heads are Edelbrock Performer 454 Rectangle Port with the valve springs changed for the Crower cam. Intake is the Victor Jr with a Holley 850. The main body has been replaced with a Proform main body and billet throttle base plate. It has a TH400 and stall converter from JP Performance built for the engine specs,car,rear 12 bolt 4.11 and 27" tires. It has Caltracs on the rear suspension. Front suspension has Global West upper and lower tubular control arms with coil-overs. When I get a chance to take it to the track what times and mph should I expect it to run if it hooks.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 07-25-2012, 07:45 AM
my87Z's Avatar
Veteran/Firefighter-EMT-I CRT
 
Join Date: Mar 2009
Location: maryland
Age: 30
Posts: 1,685
Wiki Edits: 0

Thanks: 6
Thanked 11 Times in 11 Posts
based on what you posted, i would guess that the engine is pushing in the area of 600hp/600tq (give or take a bit), that in front of a 3100-3300lbs car should have you running 10.80-11.20's at roughly 118-124mph in the 1/4, supposing that everything is in tune right and you can get it to hook up.

just my estimate

for the cam, the compression seems to be alittle on the light side, if it where in the 11.0:1-11.5:1 range i would probably say you would be looking a bit closer to mid 10's
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 07-25-2012, 07:55 AM
Registered User
 
Join Date: Jan 2011
Location: Hopewell, Va
Age: 61
Posts: 1,114
Wiki Edits: 0

Thanks: 0
Thanked 114 Times in 110 Posts
Estimated time and mph

The compression could be a little higher, not much with the decking. Usually you can get away with 1/2 point either way with the camshaft. With this cam and the exhaust overlap it should run on 93 octane gas. Just wanted an idea of what time and mph would be good for this motor. Something to work at. Thanks for the reply.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 07-25-2012, 08:00 AM
cobalt327's Avatar
WFO
 
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Location: Atlanta
Age: 59
Posts: 5,037
Wiki Edits: 1616

Thanks: 128
Thanked 595 Times in 545 Posts
Unless someone volunteers to run the specs on their software, you can use Comp's CamQuest program. Using your engine specs, see if the software shows a cam w/specs close to yours to get a HP/TQ estimate.

Using the estimate and any number of online calculators (here are a few), you can extrapolate estimated 1/8 and 1/4 mile ET/MPH, along w/other estimates like 60', etc.

Sounds like a strong combo, in any event. Good luck w/it.

Last edited by cobalt327; 07-25-2012 at 08:07 AM.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 07-25-2012, 08:39 AM
Registered User
 
Join Date: Jan 2011
Location: Hopewell, Va
Age: 61
Posts: 1,114
Wiki Edits: 0

Thanks: 0
Thanked 114 Times in 110 Posts
Estimated time and mph

Thanks Cobalt327 for the tip on the online calculators. I have been to Comps website before. The CamQuest program will only let me enter info on the stock 4 inch stroke. I have been told that the hp and torque is above 600 with this setup. This is fine with me.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 07-25-2012, 09:21 AM
my87Z's Avatar
Veteran/Firefighter-EMT-I CRT
 
Join Date: Mar 2009
Location: maryland
Age: 30
Posts: 1,685
Wiki Edits: 0

Thanks: 6
Thanked 11 Times in 11 Posts
Quote:
Originally Posted by cdminter59 View Post
Thanks Cobalt327 for the tip on the online calculators. I have been to Comps website before. The CamQuest program will only let me enter info on the stock 4 inch stroke. I have been told that the hp and torque is above 600 with this setup. This is fine with me.
it probably is but i typically try to be conservitive. with your compression though i dont think you are above 650/650. with the cam that you have and the alm heads you could have likely gotten away with around low 11's:1 on 93 pump gas and would have upwards of about 5-10% more hp, that might not sound like much but based on 600hp, that 30-60hp more.

the decking doesn't really play a huge factor in compression ratio since you still have to have the quench area at an acceptable level.

wither way it sounds like a good street/strip motor and should get you in the high 10's as long as you can get it to hook, with the lighter wieght of the car you could even see the high side of the mid 10's.
Reply With Quote Quick reply to this message

Tags
bbc, camaro

Recent Hotrodding Basics 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
estimated new compression? ForceFed86 Engine 6 12-14-2009 11:36 AM
estimated 1/4 mile time?? tirefryin_s10 Hotrodding Basics 7 10-20-2006 12:54 PM
Front Seal on 300Z, estimated time? Dizturbed One Transmission - Rearend 5 11-16-2005 04:58 PM
Estimated HP ?? OZZ Engine 2 09-26-2003 08:00 PM
Estimated HP PaulyB72 Engine 6 01-31-2002 06:42 PM


All times are GMT -6. The time now is 01:14 PM.


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.