Some 340/4 speed A bodies got torque boxes as well.

You can buy boxes from Harms Auto.

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Official Cookie and Mater Tormentor.

I don't expect to ever have enough torque to need torque boxes, but I do believe the chassis would benefit from more stiffness on rough and/or curvy roads.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Any stiffness you can add to the chassis is a good thing. A stock chassis is not really that bad until you are flogging it way beyond what a typical street car gets.

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Official Cookie and Mater Tormentor.

sorry to hijack but do you guys think torque boxes would benefit my dart even tho I'm going to be running a Reilly Motorsports Street Lynx rear suspension?

it's a 4 link type of suspension looks like this:

I'm not an expert on suspension systems but my thinking is that chassis flex is a negative factor no matter the suspension. If the chassis is going to flex it will flex as much with a 4-link as it will with a leaf suspension. I don't see any material difference.

*edit* as far as hijacking the thread, it's long gone anyway. I didn't intend for my comment about chassis stiffening to take it off on a tangent, but it did. Mea Culpa.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

Doug what is your opinion on Dyno 2000 and equivalents

I setup the base /6 with flow data cam info etc and it correlated, same with the 318 LA I own - so it looks acurate i t is about 5% conservative but rather conservative than not

I tried different cam profiles in the end a high lift (.450) Short duration 256 on 108 center line cam, headers, dual plane read twin weber manifold with 500cfm - cant find weber flow ratrings..... - headers , 1.70 1.44 valves fully ported looks like the best oh yes 9.8 cr

This according to the sim equates to about 305 lb/ft at 3000 (300 being available at 2000 and 281 HP at 5500 - 114 being available at 2000

Can this be trusted........?

Is a 6-2-1 2 1/2 better or a 3 -1 3 -1 with or with out balance tube better

From what I understand the former for torque the latter for high end HP and with the balance tube a combo true/false?

Oh yes what is the max reliable oversize a slant can be drilled?

Regs.

Fanie

The computer engine 'dynos' are all over the map as far as accuracy.
The other problem is having correct data to put into the model, do you have accurate port volume and head flow numbers?

These programs are great for doing 'what if' comparisons but that is about it. The day comes when you have to soure all the parts and assemble the engine... things start to change during that process.

AS for your numbers, the difference in our "thinking" is carb CFM... 500 CFM can support 300 HP if everything else is working together.
DD