TreDeClaw

Here are my questions before you read (thanks in advance for any replies).
1. How difficult is the fix if one
2. What is a recommendation for a manual shift point 1-2 shifts, 2-3 shifts.

*** has the original "kickdown" (tv) cable.*** and yes it is adjusted correctly.
Edit ***possibly a fuel related issue? The cable to the footpedal is full throttle, but is it possible not enough fuel is getting dumped in? We have messed with tuning a little bit does not seem to solve anything.**

Before my transmission pulled to 65-66 mph before shifting to third from second. I have since swaped for a mild built 700r4 and unknown statistics on old tranny, all I know it has been rebuilt mid 90's and it had shifted just as hard (Chirped 1-2 easy, same with new trans).
Now, my 1-2 shifts are mildly affected but I do see a difference when it auto shifts 2-3 at 4,400-4,500 rpm and 59-60 mph(before 65 mph), whereas 1-2 shifts closer 4,700-4,900. It will not downshift into 2nd at 55+, which is annoyingly slow.
I originally had a 1600 stall, 69 corvette cam, 305 original manifolds and exhaust, and upgrading those parts did nothing with shift points so I assume it's in the transmission.

I have all new parts in my engine. Everything is new, pistons, etc. I do not know the compression ratio.

-357
-Comp cams Xtreme energy cam 12-262-4
-69 Corvette double hump heads
-Edelbrock performer Rpm air gap intake
-650 Holley vacuum secondary
-1.5 rockers
-2500 stall Hughes torque converter
-Hooker Super Comp Headers 3 in.
-Hooker Y-pipe 3-2.5 in.
-Custom 2.5 exhaust, small cat, y-pipe to 2, 10" glasspacks rear.

This is what the company has to say about the rebuilt tranny I purchased.

Transmission
-700R4
-Corvette servoStage 1 shift kit
-Complete bushing kit
-Heavy duty clutch packs
-Updated sun shell
-Heavy duty band
-Hardened pump rings
-Teflon pump bushing
-10 vane pump
-Shift kit street strip
-500 boost valve
-No electronics or wiring needed
-(optional)550 HP

I can only assume my engine has more in it. I have had upgraded it with the new cam, headers, etc and I definitely notice the power difference.
-Thanks in advance.

cosmick

Your combo seems to me like the ideal candidate for a governor swap. The '85-up 2.8L governor gives WOT upshifts around 5100 RPM with 3.42s, your 3.23s may well push that to 5200-5300, and that cam should be peaking around 5000 with those non-Vortec heads.

TreDeClaw

Today I did a 20-65 pull. 2-3 shift at 4,100. Probably more accurate then my previous numbers.

TreDeClaw

How would I do that? And where do I get the part?

Night rider327

iTrader: (13)

You can also buy the B&M gov kit and set your shift points to what ever you want them.

I have the B&M governor re-cal kit in my th-400 and have WOT up shifts set for 6400 rpm.

Here's some info on how to do it. http://www.dragracingonline.com/tech...vi_9-bm-1.html

cosmick

The B&M kit is a hassle. Plus it's also entirely trial-and-error. But if you want to get it dialed in at the dragstrip, then it's the better option.
Finding a used 2.8 governor at the salvage yard is quicker, easier, and cheaper, but will get you closer than you are now.

yaj15

iTrader: (3)

You could try one of these new Governor from bowtie overdrives

V6 governor 5,500rpm - 5,800rpm wot shift point http://bowtieoverdrives.com/catalog/...hp?ITEMID=7006

Corvette governor 6,000rpm - 6,600rpm wot shift point
http://bowtieoverdrives.com/catalog/...hp?ITEMID=7010

TreDeClaw

So if I still have my original transmission with a higher gov I could do that swap too?

If I was to get a gov, let's say 5,500-5,800 for example, would it hold wot until those rpms even if it did not need to / loosing power? I don't wanna blow my engine either.

87zjeff

iTrader: (4)

Tre, something to keep in mind, the advertisements for shifts points on those governors are for wide open throttle shifts. part throttle acceleration is going to be lower.