wheel base

[Siqx20]

Is the wheel base between a kingcab and a long bed 620 the same? I the whole back half of mu frame is custom anyways so i was thinking about swapping a longbed onto my bagged k/c project. Bet uf the wheel base is differrnt then it wouldnt really be worth it. Causr i dont feel like stretching my links and frame out.

[datzenmike]

Yes the frames are the same lengths.

[Siqx20]

sweet thanks for the quick response. I got the idea cause my buddy drives a 88 gmc longbed crewcab on bags. it looked so good being that low and long. :) bed mounting wont be a issue since the back half of my frame is completely custom anyways so i have to make custom mounts. that and im doing a false bed so im just gonna raise the entire bed floor up to clear all my suspension. Im not a big fan of cutouts in the bed. looks funky IMO.

[converted_to_datsun]

well i didn't want to wait for 620 mounts and this is way cheaper a little ghetto but it works lol

 

 

 

bam spacer complete

 

and a thanks to steve for letting me use his tool's

 

But to have a long bed wouldn't you have to go with single cab? Because the king can takes up the extra length so you'd probably have to stretch the frame to fit both a of and a long bed

[Siqx20]

think u might be right. yes the wheel base is the same but to have a kingcab longbed would push the rear wheel arches back further...damn... I dont really feel like stretching everything i have already done out...

[Siqx20]

Okay so to get a long bed onto my kingcab frame i would need to stretch the wheel base out some.

 

SO! what is the wheel base for a single cab short bed and a single cab long bed? I should be able to take out the differance and stretch the frame by that much to get needed wheel base to have a kingcab longbed. right?

[converted_to_datsun]

Well the usable length of a long bed is about 7 foot 6 if that helps. I have a 79 long bed haha

[pharouh]

The wheelbase for a regular cab short bed is 100.2" The longbed and King Cab are 110". So you would have to add 9.8" to the frame to put a long bed on a King Cab.

[datzenmike]

Subtracting frame differences from the '78 FSM, I get 9.45". It also states 109.6" for the KC and long bed and 100.2" for the short wheelbase. A difference 9.4"

[Siqx20]

okay cool. so i would need to stretch my frame about 9.4" to get a long bed onto my king cab. Thanks Mike!!

[pharouh]

Subtracting frame differences from the '78 FSM, I get 9.45". It also states 109.6" for the KC and long bed and 100.2" for the short wheelbase. A difference 9.4"

 

Thanks Mike!

 

I just used a dealer brochure.

[Siqx20]

Thanks to you as well :)