Hi, I have posted this in the general board but maybe it is a tranny problem...

On the 383 listed in my sig (non-third gen), I am having a puzzling problem.
Around 4000 rpm, in first gear only(manual low), it seems like I run into a wall. The car ceases to pull and the rpms stop climbing. The motor sounds fine, not dropping any cylinders or anything.
When I switch to second gear i can rev to 6000 rpm.
It gets stranger, I had a 3.42 rear in it last summer and it did the same thing in first gear only (manual low). I grenaded that rearand and put in a junkyard special that housed 2.41 gears. I could rev up to 6000 in every gear. Now with a different rear that houses new Richmond 3.42 gears and a Powertrax locker, I experience the same thing.

So my question is, what is causing this strange problem with the lower ratio rearends?

Could it be something in the tranny?
Could it be....????

Need more info-- just ask

Any suggestion is appreciated.
Thanks



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LOBC-- SS-84

92 RS Heritage package with a 305 3" high-flow cat and pipe with a Dynomax 3" in dual 2 1/2" out.

84 El camino- 383 CID, Performer RPM, GMPP vortec heads, Holley 750 D.P.(0-4779c), Crane Energizer 274,Dual 3" Flowmaster 40 Series Exhaust, Turbo 350 (375b), TCI 2500 stall, Richmond 3.42 gears, PST Poly graphite Suspension bushings, PST steering linkage, PST springs, Monte SS sway bays, Wheels from a Third gen(does that count?)

 

***Bump***
Hmmm, maybe it is not a tranny problem, huh?

------------------
LOBC-- SS-84

92 RS Heritage package with a 305 3" high-flow cat and pipe with a Dynomax 3" in dual 2 1/2" out.

84 El camino- 383 CID, Performer RPM, GMPP vortec heads, Holley 750 D.P.(0-4779c), Crane Energizer 274,Dual 3" Flowmaster 40 Series Exhaust, Turbo 350 (375b), TCI 2500 stall, Richmond 3.42 gears, PST Poly graphite Suspension bushings, PST steering linkage, PST springs, Monte SS sway bays, Wheels from a Third gen(does that count?)