powerglide vs 3 speed

Jim Hawkins · 10-20-2019, 12:17 PM

Anyone care to share there experience switching from a glide to a 3 speed in a sbc stocker? Performance? consistency? reliability?
New car to me needs lots of updating and currently has a glide in it. Not trying to set any records but would like to keep the glide plus I have lots of powerglides here for spares with different ratios.
66 Nova 327/275 combo.
Thanks

MR DERBY CITY · 10-20-2019, 01:13 PM

A lot of it DEPENDS on how good your PG is....some guys have picked up a tenth...get you a Mc Clay, Leo Glassbrenner, Tim Wudarczyk, , Sepanek, Arnett, metric trans .....

Ed McLawhorn Jr. · 10-20-2019, 03:16 PM

I can't say for a stocker, but I replaced a pg with a Mcclay metric with 2.52gear in my 3430# 283 super stocker. PG had a 2.08. Looking at the data, we feel good for a tenth at first race. There is a little more when Im able to play with the shift points, launch rpm. Hope this helps.

J.R. Haddad · 10-20-2019, 04:05 PM

If your not trying to set any records, and you don't run into too many heads up runs, keep the glide. Ask Vic Penrod how he feels about running a glide vs. a 3 speed. You will be about 12-14 slower with the glide. J.R.

Alan Nyhus · 10-20-2019, 04:37 PM

Jim, '68 Chevy II, 327-275 G/SA: I changed a darn good A-1 Powerglide (1.98) over to a Billy Lynn Metric 200 (2.74) and picked up .10 on the average, just trans-to-trans. Further convertor work netted some more gains.

Billy does a really nice 200.

-Al

Pat6868 · 10-21-2019, 08:21 AM

To those that said they lost about .1 - .15 with the glide, is this with using the same rear axle gear ratio with both trannys.?

10-20-2019, 12:17 PM	#1
Jim Hawkins Member Join Date: Jan 2010 Posts: 198 Likes: 89 Liked 115 Times in 35 Posts	powerglide vs 3 speed Anyone care to share there experience switching from a glide to a 3 speed in a sbc stocker? Performance? consistency? reliability? New car to me needs lots of updating and currently has a glide in it. Not trying to set any records but would like to keep the glide plus I have lots of powerglides here for spares with different ratios. 66 Nova 327/275 combo. Thanks

10-20-2019, 01:13 PM	#2
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,634 Likes: 1,083 Liked 7,921 Times in 1,515 Posts	Re: powerglide vs 3 speed A lot of it DEPENDS on how good your PG is....some guys have picked up a tenth...get you a Mc Clay, Leo Glassbrenner, Tim Wudarczyk, , Sepanek, Arnett, metric trans .....

10-20-2019, 03:16 PM	#3
Ed McLawhorn Jr. Member Join Date: Nov 2008 Posts: 306 Likes: 3 Liked 19 Times in 17 Posts	Re: powerglide vs 3 speed I can't say for a stocker, but I replaced a pg with a Mcclay metric with 2.52gear in my 3430# 283 super stocker. PG had a 2.08. Looking at the data, we feel good for a tenth at first race. There is a little more when Im able to play with the shift points, launch rpm. Hope this helps.

10-20-2019, 04:05 PM	#4
J.R. Haddad Senior Member Join Date: Jun 2012 Posts: 784 Likes: 935 Liked 1,464 Times in 307 Posts	Re: powerglide vs 3 speed If your not trying to set any records, and you don't run into too many heads up runs, keep the glide. Ask Vic Penrod how he feels about running a glide vs. a 3 speed. You will be about 12-14 slower with the glide. J.R.

10-20-2019, 04:37 PM	#5
Alan Nyhus VIP Member Join Date: Dec 2002 Location: Lower Dakota territory Posts: 1,180 Likes: 1,074 Liked 799 Times in 236 Posts	Re: powerglide vs 3 speed Jim, '68 Chevy II, 327-275 G/SA: I changed a darn good A-1 Powerglide (1.98) over to a Billy Lynn Metric 200 (2.74) and picked up .10 on the average, just trans-to-trans. Further convertor work netted some more gains. Billy does a really nice 200. -Al __________________ "That'll never work....." Last edited by Alan Nyhus; 10-20-2019 at 05:43 PM.

10-21-2019, 08:21 AM	#6
Pat6868 Member Join Date: May 2010 Posts: 102 Likes: 6 Liked 88 Times in 28 Posts	Re: powerglide vs 3 speed To those that said they lost about .1 - .15 with the glide, is this with using the same rear axle gear ratio with both trannys.? Last edited by Pat6868; 10-21-2019 at 10:42 AM.

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