DTanklage

anyone know what is the difference between the 247-4202 and the 247-4203 stud kits

one is supposedly for a 1st gen and the other for a 2nd gen but i dont see what would be different

thanks in advance

don

*i have the 4203 kit and a 2nd gen truck

kennyblatz

94-98 4203
98-02 4202

um i guess i don't have the anserw to your question but the studs are different from a 12-24 valve motor in what way im not sure

DTanklage

these are both 12v motors

and i cant see there being any difference in the two set of studs

oaborbag

a 24v stud kit has all the same length studs except for the 6 outside the valve cover, a 12v kit has a different length stud every other set, I don't have a 12v so I do not know why they are different length, but I know that is the difference in the two sets. But a 247-4202 is definitely not for a 12v or a 1st gen.

Jetpilot

The 247-4202 is for the 24v engine and the 247-4203 is for a 12v engine. These engines have different stud length requirements due to the differences in the heads......

Ronco95

The 12V has a pedestal mounted set of rocker arms and therefore has one long bolt per cylinder.

The 24V does not have a similar setup.

DTanklage

wait - i thought the 4202 was for the 12v p-pump motors

no?

(not concerned with 24v studs)

1320

247-4202 is for the 98.5 - 2002 24 valve engine.

247-4203 is for 89-98 12 valve engines.

I believe the "new" 4203's require machining the rocker boss down .200 where as the original 12 valve studs did not but some hit the valve cover and caused sealing issues with the cover. So the fix was to shorten the stud which requires the rocker boss to be machined down.

DTanklage

and thats what i have...

the ones that do req machining the stand down 200 thou

good to go

thanks

Tate

Just doesn't make sense to me to take a situation that your average DIYer could fix (remove the ribs in the valve covers) to having to now find a machinist (or atleast a mill) to remove .200 from the pedestal. Oh well.