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#1
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Cam change/ 10 year Milodon gear drive inspection
Occasionally, the Milodon single idler gear drive is discussed here. I'm doing a cam change and thought I'd share some pictures/impressions of how it's held up. I think I put it in service in 2009, but may have been '10. I'm getting older I don't remember exactly.... I don't put a lot of miles on my car generally. I'd guess maybe 5000 miles tops in that time. But it has been driven in all conditions, raced a few times. I'd guess the hardest conditions are idling when not a lot of oil is being slung around. It's done a LOT of idling, mostly during my sequential efi project what with having to manually tune idle fueling and iac operation. These gears look really good. Any imperfections in the pics are where the top layer of the coating has been lightly rubbed off. I was unsure what to expect, as this was my first one. But I followed the directions exactly and being an outside machinist I'm used to dealing with gears and backlash. I'd say use with confidence if it fits your application. Sorry for the sideways pics, it's just as infuriating for me...
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'65 Tempest 467 3650# 11.30@120.31 |
#2
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Thanks for sharing!
It looks great in terms of ware and proves at least to me that if your willing to put up with some gear noise in a street motor that running a chain and gear set up is akin to when early railroads ran on wood rails!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
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On the subject of noise, you'd never know it was there. It's NOT noisy like a dual idler. If I can remember, when I get it running, I'll record a video and link to it.
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'65 Tempest 467 3650# 11.30@120.31 |
#4
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Quote:
Have never looked at it since installed. |
#5
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My M/T blown hemi has used that gear drive since day one, never a problem, often seeing 9,000 RPM.
After setting up the lash I dowel pinned the plate to the block, to ease teardown/reassembly.
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
#6
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Yeah I was thinking about that. I may pin mine as well.
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'65 Tempest 467 3650# 11.30@120.31 |
#7
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I ran one of these for years. Never had a issue. Was very quiet and the timing was rock steady. Switched to a billet/gear chain set up and I am replacing them every couples years with the high spring pressures I run.
When I pull it back out, I will buy another Milodon.
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
#8
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That was my reason for trying it. Got tired of chain stretch.
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'65 Tempest 467 3650# 11.30@120.31 |
#9
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Is that setup indexable to adjust cam timing?
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Michael Oshawa built 1 option Judge basket case. 463, SD KRE 295's, CNC'd factory intake, Cliff's Qjet, Stump Puller HR cam, RARE RA manifolds, Pypes exhaust, T56 Magnum, McLeod RXT clutch, 3.42 12 bolt. 24 year project almost done... |
#10
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Yes. But only in certain increments. Uses a "vernier bolt pattern".
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'65 Tempest 467 3650# 11.30@120.31 |
#11
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Those increments are as fine as you could need- a little over one degree at the cam, if I remember right(?).
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
#12
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I believe the increments with the bolts are 2, 4, 6.5, 7.5, 10, and 12. Advance or retard.
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'65 Tempest 467 3650# 11.30@120.31 |
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