Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Project truck
Thread: Project truck
View Single Post
  #2 (permalink)  
Old 08-08-2012, 06:01 PM
matt167 matt167 is online now
Last wiki edit: Ford axle ratio codes
Last journal entry: Rear Suspension
Last photo:
Join Date: Aug 2005
Location: Prattsville
Posts: 6,896
Wiki Edits: 31

Thanks: 5
Thanked 138 Times in 128 Posts
The transmission you want won't hold 500 HP, the engine you have is making 250 horsepower, give or take..
You can't boost the compression and add a supercharger, it's actually best to have it a little low for a supercharger. You can probably get an engine to run 350 HP with another set of heads and you will have a ton of fun with it.

As far as the 5spd, what came in 1500's of that era was a NV-3500 which is a very weak/ finiky trans and has a rating of 300 ft/lbs. Any more than that and it starts to come apart ( and there are NO upgraded parts ) What you have is ither a super rare SM-265 that was basicly modified to fit the '88+ trucks ( only found in 3/4 ton and 1 tons for a couple years), a SM-265 for a '73-'87 truck mod'd to fit or an NV-4500, found in M/T 3/4 ton and 1 ton's after like 1992. It's 4 speed plus a granny gear, but is considered a 5 speed, shifts like a truck trans, can't shift it very quick, but it'll take a lot of power ( same trans as 5spd Cummins Dodges ). Your 5spd options are basicly transmissions that will cost far more than a grand to buy ( Tremec 3550 or TKO 500 would do well ).. The easiest thing to do is accept that it's not a race car, build the engine enough that you can have some fun while being practical..

What you want will cost $20k easy.
Reply With Quote