F100
01-21-2012, 06:06 AM
#1
Staging Lane
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F100
Picked this up 5 weeks ago, doing a quick build on the old girl to make her handle and go a bit better...
Stripped the F100 down.
Started with the basic rails, everthing else is custom.
Fitted to a chassis jig aligning the front cradle
Chassis rails being narrowed 6 inches at the rear.
Stripped the F100 down.
Started with the basic rails, everthing else is custom.
Fitted to a chassis jig aligning the front cradle
Chassis rails being narrowed 6 inches at the rear.
01-21-2012, 05:36 PM
#7
Staging Lane
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I started doing this to another type of chassis, it ended up be considered by the Licencing Engineers an individual build because of the chassis mods. This is where the money pit started with torsion tests before and after the frame was modified. I fitted the ZR1 brakes to it and when the Engineer saw those he told me im not allowed to run them because I did not have ABS braking fitted.
I sold the chassis to guy in another state who is finding it easier to get licenced.
SO WITH MY SPARE PARTS i STARTED THE f100.
Reading the law that my licencing state has with modified cars I found a loop hole on chassis mods. It says a chassis must not be cut at any point from the cab forward. The rear section is allowed to be modified, ie lengthed etc...
I asked my engineer about replacing crossmembers he said no welded crossmember where allowed to be removed. I asked what if they where bolted and riveted to the chassis? He said yes I can remove and replace them. I asked can I bolt another subframe / cradle between the chassis rails. He said yes.
I asked if I was allowed to modify the chassis behind the cab, he said yes as long as the chassis rails where boxed and strengthed where they have been cut.
So with there restrictions the F100 build has started. I'll be pushing the law with a hole in the chassis for the steering arms to run thru, the law says im not allowed to cut the chassis, nothing about punching a 4 inch hole thru it.
As you can see from the blueprints below im only changing the crossmembers on the chassis and doing a reverse Z on the rear rails bringing the rear rail width down from 37 odd inches to the Corvettes 32 inch rear cradle width. I need to make this chassis look stock so except for the crossmembers and boxing the chassis the original chassis profile will remain the same.
Sometimes you have to build cars to the law, Im not sure what its like in the USA it seems you guys have more freedom to make anythying.
The chassis should be a roller by next weekend, just waiting for the crossmembers to be bent up at my local sheetmetal guy. The chassis will be fully boxed in with custom crossmembers.
I sold the chassis to guy in another state who is finding it easier to get licenced.SO WITH MY SPARE PARTS i STARTED THE f100.
Reading the law that my licencing state has with modified cars I found a loop hole on chassis mods. It says a chassis must not be cut at any point from the cab forward. The rear section is allowed to be modified, ie lengthed etc...
I asked my engineer about replacing crossmembers he said no welded crossmember where allowed to be removed. I asked what if they where bolted and riveted to the chassis? He said yes I can remove and replace them. I asked can I bolt another subframe / cradle between the chassis rails. He said yes.
I asked if I was allowed to modify the chassis behind the cab, he said yes as long as the chassis rails where boxed and strengthed where they have been cut.
So with there restrictions the F100 build has started. I'll be pushing the law with a hole in the chassis for the steering arms to run thru, the law says im not allowed to cut the chassis, nothing about punching a 4 inch hole thru it.
As you can see from the blueprints below im only changing the crossmembers on the chassis and doing a reverse Z on the rear rails bringing the rear rail width down from 37 odd inches to the Corvettes 32 inch rear cradle width. I need to make this chassis look stock so except for the crossmembers and boxing the chassis the original chassis profile will remain the same.
Sometimes you have to build cars to the law, Im not sure what its like in the USA it seems you guys have more freedom to make anythying.
The chassis should be a roller by next weekend, just waiting for the crossmembers to be bent up at my local sheetmetal guy. The chassis will be fully boxed in with custom crossmembers.
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01-21-2012, 06:04 PM
#8
Staging Lane
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Basically a 2004 ZO6 drivetrain, Custom Torque tube. I'll leave it standard until the Licencing department has passed it then work the motor. The F100 was 4180lbs its now down too 3600lbs. Tyres are 345 rear and 275 front, rims are 20 x 12 and 20 x 10. Pontiac G8 / Holden VE RHD steering rack. Coilover suspension.
01-21-2012, 06:33 PM
#9
TECH Resident
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This sounds like a pretty serious project going on. Just wondering did you get all of that guys rules in writing? I know weve had a problem with a race car where one official would "say" something but when another official asked about it he would revoke his word saying he didnt say that. Now we always get everything in writing, wouldnt wanna see that happen to you
01-21-2012, 07:21 PM
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Staging Lane
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Yes I did, its basically the State laws vehicle modification code. I made sure this time that the F100 was already licenced so basically I'm able to drive it soon as the project is finished. I'll need an Engineer to inspect the welding and general engineering on the F100 to make sure it is a safe standard.