New 408. How much nos?

Reply Subscribe

Thread Tools

Search this Thread

03-16-2012, 01:36 PM

Jeremy38058

Registered User

Thread Starter

Join Date: Mar 2012

Posts: 4

Likes: 0

Received 0 Likes on 0 Posts

New 408. How much nos?

Just built a 408. Need to know what type of kit and how much. Was thinking 300 shot??
Eagle forged and balanced bottom end.
Arris pistons.11.8 to 1
Comp 251 267@50 624 lift on a 115
Patriot 63 cc heads 208 160 valves 227cc intake runners.
All arp studs commetic gaskets.
3500 converter 390 gears.
3 inch exhaust no cats.
Custom tuned.
49lb injectors.
Built 4l80
Stock truck intake for now

Reply Like

03-17-2012, 06:17 AM

87silverbullet

TECH Veteran

iTrader: (11)

Join Date: Mar 2007

Location: Slidell,LA

Posts: 4,873

Likes: 0

Received 8 Likes on 7 Posts

You would need a direct port for a 300 shot. You are going to need a better intake for that also.

Reply Like

03-17-2012, 06:57 PM

soundengineer

8 Second Club

iTrader: (16)

Join Date: Jul 2003

Location: Chicago IL

Posts: 4,651

Likes: 0

Received 9 Likes on 9 Posts

really need to know more specific engine details to know how much it can hold...
thats like asking somebody how much a 346 can hold or how much can a BBC 454 Hold.... depends on what its been built for...

what are your rings and what are they gapped at..
need more specifics about the pistons... are they gas vented?
what rods? I-beam ? H-Beam?
Iron block? Aluminum Block?
Bearing tolerances?
Which Balancer/Damper on the crank(yes, it makes a big difference...)