408 dyno report and build sheet

-
LETSRACE

LETSRACE

Well-Known Member
Joined
Jul 27, 2009
Messages
218
Reaction score
42
Location
Near Chicago
Just had time to post the dyno report for my new 408. It will be going in a back-half 72 Duster that should come in at about 2600 lbs. I hope to see the nines for the 1/4.
Brian at IMM did the head and intake work, Indy 360-1's flowed 328 at .700, Indy intake, Ferrea 2.08 x 1.60 valves, T & D 1.6 and 1.7 rockers. Motor: Comp solid roller cam, Hughes main stud girdle, Ross pistons 99789 (coated), Eagle 4340 crank and H rods (coated). Compression at 13.5 to 1, Tall block fill, lifter bores bushed with 8043-16 roller lifters. Oil mods: Kevko rear sump oil pan M202 with gates and windage tray, 3/8" lifter bore oil crossover tube, oil thru Manley 5/16 moly push rods, (blocked head oil ports), blocked #1 main oil from right lifter bore. TTI 1 7/8 headers, MSD pro billet, Quick fuel 1050 carb, Moroso vac pump.
 

Attachments

  • 143634.jpg
    39.8 KB · Views: 914
  • 161105.jpg
    44.3 KB · Views: 897
Very nice build:thumrigh:. Congrats! Keep us posted as you get things together, gonna be fun to watch.

Depending on how much correction had to be done on those numbers, i think @2800 lbs with you in it, Mid to High 9's @ 137/140 mph will be achievable when the chassis and gearing get squared away. Good Luck ahead!!!
 
Who spec'd the cam? Do you have any data like BSFC's, BMEP, AF's, etc...?
 
Brian This is the cam I had before you and I spoke. The cam was spec'd by the motor shop and Comp. Cam's tech center.
 

Attachments

  • dyno report resized.JPG
    89.1 KB · Views: 671
Very nice combo and impressive numbers. I have got a 408 with W9s 10.8 comp but smaller cam for my street car. Runs pump fuel no prob. My peak power is 600hp at 6300 570Tp round the 5000rpm mark. I'm HOPING to push my 3480lb car into the tens. Yours must sound sweet at 7200....!
 
This is a 427cid (4.06 x 4.125) SB Mopar I did a few months ago.
 

Attachments

  • DSC00333.JPG
    157.7 KB · Views: 520
  • DSC00332.JPG
    175 KB · Views: 493
Brian those numbers are awesome, but you forgot to talk about the goods. What heads, intake, pistons, carb size. Is that from a R or LA block ?
 
LETSRACE said:
Brian those numbers are awesome, but you forgot to talk about the goods. What heads, intake, pistons, carb size. Is that from a R or LA block ?
Click to expand...

Just a bracket engine, -2cnc heads, 1050, R block, 13:1, and nice cam!
 
You must log in or register to reply here.
-

Back
Top