whats the difference between the f150 and f350s beside suspension? im looking to do a SAS with a cummins swap but im having a hard time finding a single cab, long bed 4x4 f350 around here for cheap. so could i SAS a 150 and put a cummins in it and not have to worry about bending anything on the frame?

 

what year trucks are you talking about here???? My 88's have a ton beefier frame than the 92 F-150 I used to have...

 

well i want the 93-96 front end. but if the older ones have beefier frames ill swap front ends if needed.

 

well I know my 88 F250's are thicker than the 92 F150 I had so there is probably thicker steel on the newer 92+ F-250's... What are you looking to do exactly? swap motors? do some towing/hauling? What's the goal of the project? Upgrade the truck you have???? More details needed!!!!

F-250's and F-350's have thicker frames, heavier suspension, taller ride height, heavier trannys... I mean where do you begin... I wouldn't buy another 150 after having my F-250's...

 

and you don't need to swap entire front ends... it's just a front clip swap you need. Radiator support, fenders, hood, grill and bumper...

 

looks like he is just wondering what frame to use

engine and transmission transfer case front and rear end are going to be changed so it looks like more of a question in using which frame

 

oh ... ok... yes use the thicker F250 or F350 frame. 87-91 frames can be found in plentiful supply if you need on and are should hold up just the same as a 92+ F250/F350 frame. You'll have little to no modification needed. Everything won't be bolt on but you can find them cheap enough. Shoot I saw 3-4 F250/F350's for parts or whole on craigslist today for under $350...

 

The F350 frame is MUCH bigger.. the frame C-channel is over 3" taller than the 1/2 ton version and made of heavier steel so there is no comparison.

 

the goal of the project is to make the truck of my dreams lol. standard cab, long bed, lifted with a cummins.

trucks may be plentiful around you, but theres nothing around here. NOTHING lol. hell i cant find a old f350 for under 5gs

 

Ahh, you are doing exactly what i want to do. The F150 frame will hold up fine. The F350 frame isnt any taller then an F150 frame, its just a little thicker. So no problems with the F150 frame especially if its a single cab long bed. Shorter frame means stronger frame.

The only issue you might encounter is if you are making tons of torque. Over 700 ft-lbs which might cause the fram to start twisting. The C-Channal frame doesn't like twisting. But that can be solved with a well placed cross member.

 

i do plan on making alot of torque. somewhere around the 900-1000 mark eventually.

i guess i should go with a 250 frame

 

Ya, with that much torque, even an f350 frame is gonna have a hard time. i would get a good frame and box it and reinforce it. Even the one from your F150 would be fine if you boxed it and reinforced it. Thats the only way you'll get a C-Channal frame to handle that much torque. Otherwise your gonna be breaking welds and cracking the frame all over. And to handle that power, your gonna have to do alot to the rear suspension anyways, 4 link, or traction bars. So you might as well start beefing it up.

 

well i dont have a truck yet. i just wanna find one to start building up for when my 97 dies.

 

That makes sense. I was wondering why you were in the pre 97 forum.

If your gonna buy the truck i would start with an f350. That way you are already starting with a strong platform. Although with that much torque you'll probably have to reinforce the F350 frame as well depending on exactly what you do with it. towing, racing, off roading.

Im thinking about a 6bt in my 93'. My only concern is the weight if im gonna be off roading. i dont want a truck that nose dives all the time. I dont have any concerns for the frame though, but ill be only be shooting for 600ft/lbs or soo.

 

i might start with a 150 or 250. its gonna be a while before i get into the high hp marks. so i figure when i get there ill just buy an f350 and swap the motors. i dont plan on doing alot of offroading. mostly just road driving. it will be seeing alot of boosted launches though