1981 GTV6 - replace transaxle with a Platinum unit?
I have a conundrum I am hoping you can help me resolve.
I have a 1981 GTV6 that has a fairly bad transmission. 1st gear syncro is completely gone, 2nd and 3rd gear syncros are in bad shape. Just today I replaced the Swepco gear oil I had in it with Red Line, which made a decent difference - gear shifts are a little smoother, however I still need to shift pretty slowly if I don't want to grind the dog teeth gears.
So I've been looking around for a Milano Platinum transaxle, which seems to be the go to transaxle as, from what I have read, it seems to have better gear ratios, keeps the same final drive as the GTV6, and of course has the famous 25% LSD. I have found one at a decent price in very good condition that does not need refurbishing. But I need to give my transaxle in exchange.
Now I have a small doubt about the gear ratios. Being a 1981 model, my gear ratios should be the following:
1981 GTV6 Gear Ratios
Final Drive 4.10
Compared to the Milano Patinum ones:
Milano Patinum Gear Ratios
Final Drive 4.10
The doubt that I have is that I will lose some acceleration. The engine in my car is a stock 2.5L with no modifications whatsoever. It's a good strong engine with 140k miles, that I think has never been rebuilt.
Will the taller Milano Platinum gear ratios be a too much for my engine? Will it have much less acceleration? Will I have trouble driving quickly up steep hills?
I know the work involved in installing a Milano transaxle in a GTV6, and that doesn't bother me, however I am a bit fearful I will not like the characteristics of the Milano gear ratio setup.
What do you guys think? I am curious to hear about the experiences others have had with a similar swap.
Thank you for reading and for any comments you may have.