Intake for torque...

Reply Subscribe

Thread Tools

Search this Thread

Sep 23, 2013 | 09:10 PM

S10xGN

Thread Starter

TECH Junkie

iTrader: (11)

Joined: Jul 2005

Posts: 3,782

Likes: 7

From: Port Neches, TX

Intake for torque...

What are my options for a low RPM (under 6500) torque producing intake manifold? This will be on a 416" L-92 block with Patriot stage III cathedral-port heads and 11.4 static CR that will not see 6500 and likely a 6000 limit. Cam is 233°/245° on a 110 LSA, headers with the usual mods. Would like to stay injected (Holley HP EFI) but could use 4 bbl throttle body if hood clearance permits...

Sep 24, 2013 | 08:12 PM

S10xGN

Thread Starter

TECH Junkie

iTrader: (11)

Joined: Jul 2005

Posts: 3,782

Likes: 7

From: Port Neches, TX

Somehow I didn't figure to get a response, everybody here seems to be hung up on 8,000 RPM and 600 RWHP...

Sep 24, 2013 | 10:03 PM

Paul Bell

That's MISTER MODERATOR

iTrader: (9)

Joined: Nov 2005

Posts: 7,615

Likes: 65

From: NYC

Some race cars have been known to use a truck intake manifold.

Sep 24, 2013 | 11:02 PM

01ssreda4

TECH Senior Member

iTrader: (96)

Joined: Aug 2007

Posts: 24,241

Likes: 89

From: Turnin' Wrenches Infractions: 005

Truck intake likely makes the most torque but may be a huge choke point in the upper rpms. I'm not that familiar with them though. What's the goal of the car? I mean 6500 is very very conservative for these engines, and a FAST intake pulls to around there or a little higher.

Sep 25, 2013 | 08:41 PM

S10xGN

Thread Starter

TECH Junkie

iTrader: (11)

Joined: Jul 2005

Posts: 3,782

Likes: 7

From: Port Neches, TX

Quote:

Originally Posted by 01ssreda4

My '63 Rambler American is light (maybe 2700 empty?) with a 325DR tire, 3.25 Ford 9" locker, and old-school 4 speed with 3.08 first gear. I want something that pulls hard from off-idle, strictly for fun on the street, no racing involved. I've got a sprung-hub clutch but still don't want to have to rev it to 4000 to take off from a stop. Hell, I'm old and have too much to lose getting caught f'ing up...

Sep 27, 2013 | 06:31 PM

99Bluz28

TECH Senior Member

iTrader: (35)

Joined: Nov 2007

Posts: 9,705

Likes: 12

From: C. V., Kalifornia

Have you considered a Edelbrock Performer RPM (dual plane) manifold, it'll offer better torque(an HP) below 4k then a FAST intake manifold.
The down side is that it loses power above 4k to the FAST intake.
Read this article:
http://www.superchevy.com/technical/...t/viewall.html

Sep 27, 2013 | 07:29 PM

S10xGN

Thread Starter

TECH Junkie

iTrader: (11)

Joined: Jul 2005

Posts: 3,782

Likes: 7

From: Port Neches, TX

Quote:

Originally Posted by 99Bluz28

That was a good read, but there's a big difference (90 cubes) between a 5.3 and 416". I have run an engine sim program using the stock LS-6 vs a Victor, JR with a 1200CFM tb and the Vic blows the LS-6 away throughout the range. Not sure if the Performer would be a choke point under 6500 and I don't have a manifold file for that piece. I may need to use a stock-type manifold for hood clearance, would a FAST 102 be a choke on an engine this big?