Home | Register | Login | Contact Us

 
Auto Math
Classifieds
Forum
Gallery
Games
Garage
Tech Articles
Utilites
 
FAQFAQ    SearchSearch    RegisterRegister    Log inLog in    Log in to check your private messagesLog in to check your private messages    Forum Subscriptions1/4 Mile Table 

396 small block

 
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Chevy - Small Block Gen 1
View previous topic :: View next topic  
Author Message
BowtieAaron
Member


Joined: 15 Nov 2002
Posts: 32
Location: pa
100.00 points



PostPosted: Fri Nov 15, 2002 6:24 pm    Post subject: 396 small block Reply with quote

what ya'll think about a 396 small block it consist of the following:
a 350 0.030 overbore, with a 3.875 stroke crank, 5.7 eagle rods with floaing pins, 11.5:1 comp, world sportsman 2 heads 64 cc, .488/.488 solid lift cam, holley 750 double pumper, performer intake ( dual plane), large tube race headers, w/ spin tec 3"oval exahust= 532 hp @ 6500 and 509 lbs ft torque at 4500.

what ya'll think of that. o yea by the was i build that motor on dd2000, an on desktop drag it said my chevell ewil run 10's w/ 4.11's and slicks but i think it will run more liek high 11's mid 12's.


aaron
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address MSN Messenger
jeep_406
Member


Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
53123.48 points


1972 Chevrolet Nova

PostPosted: Sat Nov 16, 2002 1:18 am    Post subject: 396 small block Reply with quote

Hi Aaron,
What are you looking to build? Street, Street strip, Drag car only?
I'd rather run a 0.030 over 400 block for the bigger bore. Seems like a lot of compression for cast heads with pump gas. What is the rest of the info on the cam? Seems like a lot of HP.
I'd run the 1 3/4 headers and a single plain manifold. I like the Victor jr.
I've never run them, but, a lot of guys will tell you the 6" rod will make more power.
I don't know what it's like to put the longer stroke in a 350. I do know it is a lot of work to fit it in a 400 block. I assume it's a chore in the 350 as well.
Jeep_406
Back to top
View user's profile Send private message Send e-mail
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81574.74 points


1971 Chevrolet Chevelle

PostPosted: Sat Nov 16, 2002 10:30 am    Post subject: Reply with quote

Interesting HP & TQ numbers that is exactly what my 406 put out on a the dyno 532 HP w/509TQ only peak HP was @6300rpm and peak TQ was @ 5000rpm. THe heads are alum. dart sportsmans,850 race holley with a solid roller. The heads were the limiting factor for this motor. Max airflow would only support this much power.
Back to top
View user's profile Send private message
UDHarold
Newbie


Joined: 02 Nov 2002
Posts: 14
Location: Senatobia, Ms
100.00 points



PostPosted: Sat Nov 16, 2002 12:24 pm    Post subject: 396 small block Reply with quote

The cam is just too small. An engine like that needs at least a SB288/296F5 to make power, and it will have power from 2800 on up. As a programer myself, I'm not much on computer simulation programs, most are extremely simplified. In computer simulations, a Comp Cams 290-1(255 @ .050, .540" valve lift) makes about the same power as my 288(255 @ .050, .540" valve lift), yet the 2 cams do not look alike to the naked eye. The UD 288 is 6 degrees bigger at .200", and the engine sees this as a much bigger cam in terms of top end. Because it is unsymetrical, the engine also sees the UD 288 as smaller at low rpm, the best of both worlds.
It needs a good high-volume mech pump and 1/2" #8 fuel line from tank to carb.
The SB288/296F5 has over 10,000 satisfied customers, and is the cam that everyone thinks of when they think of UltraDyne.....

UDHarold
Back to top
View user's profile Send private message Send e-mail Visit poster's website
SMOKEmUP
PostMaster


Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Sat Nov 16, 2002 1:28 pm    Post subject: Reply with quote

Paul P... what does DD2000 predict for your motor? Was it close?

I don't have any engine dyno numbers for my motor, only chassis dyno numbers. Working backwards assuming a 20% loss through the drive train I've come to the conclusion DD2000 is off by 6% at the peak. In other words take that 532 * .94 = 500 HP. I think the 500HP is more realistic and the low end numbers for DD2000 I think are not accurate, especially for the roller cams. That's my two cents.
Back to top
View user's profile Send private message Visit poster's website
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81574.74 points


1971 Chevrolet Chevelle

PostPosted: Mon Nov 18, 2002 4:07 pm    Post subject: Reply with quote

It's was pretty close. It's been a while since I played with the program.

I have one of Tim's grinds from Ultradyne in it now. It pulls harder on the top end (seat of the pants method). We'll have to see next season just how much it will yeild in ET & MPH.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Chevy - Small Block Gen 1 All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
Home | Contact Us | Automath | Cam Files | Dyno Search | Forum | Garage | Picture Gallery | Reaction Timer

Copyright 1997-2016 SMOKEmUP.com All rights reserved.
Advertising Info     Disclaimer     Privacy Policy