High torque starter

[jer8716]

Hey all I have a 1970 toronado gt the 455 is 30 over with around 13.5 to 14:1 compression the factory starter has one heck of a time turning the old girl over I have replaced with new starter new cables any one have a sorcerer for a mini high torque or a full size high torque starter.

[Schurkey]

The ONLY aftermarket high-torque starter I'm aware of for Toronado was sold by RobbMc Performance.

http://www.robbmcperformance.com/products.html

However, I don't see the Toronado/Eldorado unit listed on his site any more. Discontinued, I suspect. You could contact him to confirm, though.

The GM/Delco 10MT "high torque" starter should work, if you have enough battery, and proper-gauge cables. The problem is that there were so many variations of that starter that it's easy to get a large, "high torque" appearing starter with low-torque parts inside. The big housings get rebuilt with short armatures and short field coils---or maybe they came that way due to GM cost-cutting--instead of using the proper long armatures and long field coils inside the long housings.

In the meantime, I'd be doing voltage tests, and voltage-drop tests on the existing starter, along with verifying that the ignition timing isn't excessive at cranking speed. Another semi-popular trick is to crank the engine with the ignition OFF, to get some momentum built-up, then flip the ignition "on" only after the crankshaft is already spinning.

[bcroe]

One of those mini geared starters might do it. Generally they can be rotated around for
clearance. I have one but haven't tried it yet. Ran out of space putting a 78 TH425 trans
into a 79 (TH325) Toronado. Bruce Roe

[Eightballz]

as for the RobbMC starter..they took it down due to not enough orders.

they sold me the CAD file for the adapter plate so i could buy the olds RWD mini starter from RobbMC and craft the adapter on my own.

might be cheaper to go with one of the starters bruce recommends.