Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

How does this setup sound?

Thread Tools
 
Search this Thread
 
Old 04-18-2005, 10:54 PM
  #1  
Senior Member

Thread Starter
iTrader: (1)
 
1bdbrd's Avatar
 
Join Date: Nov 2002
Location: Kansas City
Posts: 889
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 Trans Am
Engine: L98
Transmission: T56
How does this setup sound?

400 SBC
327 crank modded for ford rods
ford 300 I6 connecting rods modded to fit SBC crank
custom forged pistons
afr 190 heads with 2.02/1.95 valves
lt4 hot cam
holley stealth ram intake

desktop dyno 2k says this engine with an 850 carb and a single plane will make 525hp@6500 rpms and 469 ftlbs@5000 rpms. hot rod mag did a build up of this engine with a stock lt1 sized comp cam and made 412hp so i think it can make close to these numbers NA with a hot cam. heres the DD screen shot (copy and paste)

http://image48.webshots.com/49/7/78/...9xAUcFz_fs.jpg

and if you want here the Hot Rod article: http://www.airflowresearch.com/artic...le03/A3-P1.htm
Old 04-18-2005, 11:26 PM
  #2  
Supreme Member

 
ME Leigh's Avatar
 
Join Date: Jan 2002
Location: Valley of the Sun
Posts: 3,852
Likes: 0
Received 0 Likes on 0 Posts
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Expensive! And a waste of money.


I would not use and reworked parts, when you can get aftermarket component in just about any size you want.
Old 04-18-2005, 11:49 PM
  #3  
Senior Member

Thread Starter
iTrader: (1)
 
1bdbrd's Avatar
 
Join Date: Nov 2002
Location: Kansas City
Posts: 889
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 Trans Am
Engine: L98
Transmission: T56
thats a thought i had because i was worried about hacked parts as well. i just didnt know how much custom rods and a forged 327 crank would be. ill look into that.
Old 04-19-2005, 12:26 AM
  #4  
Supreme Member

 
ME Leigh's Avatar
 
Join Date: Jan 2002
Location: Valley of the Sun
Posts: 3,852
Likes: 0
Received 0 Likes on 0 Posts
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Why make the engine smaller, bigger engines have more potential for making power.

You can get 6.0", 6.125" and 6.25" SBC rods for pretty cheap from lots of aftermarket companies. Then you could get a used nascar crank and run some custom pistons.

But why? There is no reason to build a small engine unless you are liminted by rules.
Old 04-19-2005, 08:19 AM
  #5  
Senior Member

Thread Starter
iTrader: (1)
 
1bdbrd's Avatar
 
Join Date: Nov 2002
Location: Kansas City
Posts: 889
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Originally posted by ME Leigh
Why make the engine smaller, bigger engines have more potential for making power.

You can get 6.0", 6.125" and 6.25" SBC rods for pretty cheap from lots of aftermarket companies. Then you could get a used nascar crank and run some custom pistons.

But why? There is no reason to build a small engine unless you are liminted by rules.
becuase like ive said in the past, im interested in something that likes to rev. i dont want killer low end and then a sharp drop off of both hp and tq like the TPI has. i was something along the lines of an ls1 style powerband.
Old 04-19-2005, 08:25 AM
  #6  
Junior Member
 
Charman234581's Avatar
 
Join Date: Apr 2005
Location: Decatur, AL
Posts: 44
Likes: 0
Received 0 Likes on 0 Posts
Car: '88 Camaro RS,
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: Stock
If you want something along the LS1 powerband then it will almost just as cheap to go buy a used LS1 and all the goodies to hook it up. There are plenty of articles to the swap.
Old 04-19-2005, 08:58 AM
  #7  
Supreme Member
 
RB83L69's Avatar
 
Join Date: Jul 1999
Location: Loveland, OH, US
Posts: 18,457
Likes: 0
Received 15 Likes on 15 Posts
Car: 4
Engine: 6
Transmission: 5
i was something along the lines of an ls1 style powerband
So, what does all this custom crank and foreign rods and reduce the motor's size, have to do with that? "Revs", by which I assume you mean the torque vs RPM curve, aren't determined by the short block; they're determined by the induction system and the cam.

But even apart from that, what do you really want here? Do you want some arbitrary imaginary spank-off about "power band", or do you want to go fast?

If you've got a 400 block, then build a 400, put the Stealth Ram on it if that's what you want, and be done with it. If you pick the right cam and heads, the power band will follow. All the rest of that custom crank crap is just 3 steps backwards for every step forward; and consists of using your own money as the weapon to shoot yourself in the shorts with.
Old 04-19-2005, 09:54 AM
  #8  
Senior Member

 
my3rdgen's Avatar
 
Join Date: Oct 2003
Location: Dixon IL
Posts: 818
Likes: 0
Received 0 Likes on 0 Posts
Car: 2013 Challenger RT
Engine: 5.7
Transmission: 6 spd
Axle/Gears: 3:92
Here we go again.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
86Firebird86
Power Adders
36
12-26-2015 07:21 AM
Bubbajones_ya
Cooling
23
09-14-2015 08:38 PM
Blue419
Tech / General Engine
3
09-10-2015 01:03 PM
89fast5oh
Exhaust
2
09-08-2015 09:55 AM
84 TA NV
Firebirds for Sale
1
09-06-2015 08:02 PM



Quick Reply: How does this setup sound?



All times are GMT -5. The time now is 11:53 AM.