Gearboxes and exhaust headers
Discussion
If opting for a "Magnum", bare in mind it comes in various fitments, and none are OEM Monaro or Fbody.
So any that are sold for these vehicles are custom built units which adds a little to cost
Tremec are supposed to be introducing a Magnum F at the end of the year though, which should mean a proper factory built Magnum which would be cheaper than the custom units.
But even that date may be hopeful.
For one ready now, Tick performance and RPM Transmissions seem to be the main names bandied about.
DDPerformance also sell them
For another option similar to a 6060/Magnum, Rockland Standard Gear offer their Tranzilla's which actually read as pretty well specced.
At a more extreme end, PPG offer new gearsets, sequential setups etc
DIY rebuild isnt actually that hard. I just pulled mine apart and it was surprisingly simple.
In UK, Maybe Monkfish offer a rebuild service ? Gearboxman ?
Useful, but now outdated article
http://www.superchevy.com/how-to/0703gm-t56-transm...
So any that are sold for these vehicles are custom built units which adds a little to cost
Tremec are supposed to be introducing a Magnum F at the end of the year though, which should mean a proper factory built Magnum which would be cheaper than the custom units.
But even that date may be hopeful.
For one ready now, Tick performance and RPM Transmissions seem to be the main names bandied about.
DDPerformance also sell them
For another option similar to a 6060/Magnum, Rockland Standard Gear offer their Tranzilla's which actually read as pretty well specced.
At a more extreme end, PPG offer new gearsets, sequential setups etc
DIY rebuild isnt actually that hard. I just pulled mine apart and it was surprisingly simple.
In UK, Maybe Monkfish offer a rebuild service ? Gearboxman ?
Useful, but now outdated article
http://www.superchevy.com/how-to/0703gm-t56-transm...
ARAF said:
It's odd that they call it an LS. Because from what Ive seen, the shifter is not in a suitable position for any factory LS car.OEM fitments
Some dimensions on the Magnums here.
The GM LS version they claim, the most rearwards stick position is still 3" shorter than the FBody, which is probably another 3" shorter than the Monaro
http://www.performanceplus.com/product/tremec-tran...
Some dimensions on the Magnums here.
The GM LS version they claim, the most rearwards stick position is still 3" shorter than the FBody, which is probably another 3" shorter than the Monaro
http://www.performanceplus.com/product/tremec-tran...
Blimey, some mad gearboxes there. I have a worn T56 that's going in to a Monaro. It needs rebuilding. Power is not going to much more than stock. I just thought I'd take the opportunity to apply some 'sensible' upgrades (i.e. Not expensive if done when the gearbox is in bits.
As for the headers, I've just been looking at JBA and OBX shorter headers, as direct replacements for the iron ones. I have a stainless cat back and stainless cat pipes, so just wanted to finish it all off nicely. Again, for my son's 2004 VXR. Trouble with these items is I can't see that they'll ship to the UK.
As for the headers, I've just been looking at JBA and OBX shorter headers, as direct replacements for the iron ones. I have a stainless cat back and stainless cat pipes, so just wanted to finish it all off nicely. Again, for my son's 2004 VXR. Trouble with these items is I can't see that they'll ship to the UK.
stevieturbo said:
Outdated as in there are now better rebuild bits available?I'd love to rebuild my gearbox, I wonder if there are any borked ones on ebay I could play with?
SturdyHSV said:
Outdated as in there are now better rebuild bits available?
I'd love to rebuild my gearbox, I wonder if there are any borked ones on ebay I could play with?
basic rebuilds are basic rebuilds.I'd love to rebuild my gearbox, I wonder if there are any borked ones on ebay I could play with?
But there may be better syncro assemblies from newer models etc, but not always retrofitable.
Even the Monaro/GTO box has better units than my old Camaro FBody box for example.
It's debatable about what is needed as an upgrade and what isnt. The article is still valid though.
Either way the boxes themselves will easily handle a lot of power, the gears will handle far above what Tremec quote.
Other than some uprated shift bits, all parts within the 2 boxes Ive used are OEM standard parts and gears.
And one of them is totally standard and never been opened !
The only one that has given bother was the uprated one lol
ringram said:
Main mod I seem to recall was to fit bronze instead of fibre fork pads
Gary got his box done by some racing box guys to fit the 0.71 gearing. Maybe he can provide more info.
If you read some sites, and I think the one I linked says it...they prefer plastic.Gary got his box done by some racing box guys to fit the 0.71 gearing. Maybe he can provide more info.
And in many ways it makes sense. Bronze may be more robust initially...but they will also wear faster, and mine were quite worn despite not huge mileage ( although a reasonable amount of racing )
From looking at mine, I would definitely go for the billet keys in the syncro mechanisms
The pressed steel items on mine, some were heavily worn, others actually bent
Some mention steel 3-4 shift fork which also makes sense, although I think later Monaro type and other transmissions already have this anyway.
There are various metal treatments, polishing etc. Hard to know how much value these actually have in the real world. Cant see them being worth doing unless at a very high level, even then, one vender I contacted recently said Tremec do not recommend cryo treatment as it will weaken the gears.
Maybe not applicable to all boxes, some may already have, but the more syncro cones per syncro you can acquire, that would definitely be worthwhile with any rebuild.
But that might involve actual new gears so maybe not viable without a lot of expense.
Good video here explaining some of the differences.
Early boxes like mine have only a single syncro cone on some gears, some later have double, and better again triple.
Although due to the larger mainshaft my 5th and 6th were replaced with Vette items which had triple cones vs the normal single. Monaro already has those anyway I think.
Although it'd be really the 1-4 gears you'd want any upgrades as these get used the hardest
https://www.youtube.com/watch?v=MXsRfbOiBhE
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