SC'ing my N/A Bonneville - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Thread Tools Search this Thread
Old 05-21-2007, 10:00 PM   #11
Senior Member
True Car Nut
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road

You want my opinions on the top swap?

Some will say go for it. Others will tell you not to waste your time. For me, I used a low mileage L27 as the core replacement for my shot L67. So far, the build has held up well, and with the sole exception of chasing knock gremlins (my cat was the biggest contributor), it has been reliable. I will know much more when the trans install is complete and I can drive the car alot more than 1k a year.

If you plan to run only at or slightly above stock L67 levels, an induced L27, esp. one that has been well cared for, will hold up well I think. If you DO plan on going past stock L67 levels, I suggest going a few notches richer than normal. This will keep you from melting the pistons since they are not coated like the L67 pistons. Otherwise, stick with the L67 setup from the get-go.

Keep in mind I am not mentioning the HD trans. No matter if you have the L67 or TS'd L27, it'* a given you should have an HD trans
sandrock is offline   Reply With Quote
Old 05-21-2007, 10:36 PM   #12
Junior Member
Posts like a Ricer Type-R
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road

Top swap on a non-HD trans? Forget it unless you have at least 2k to throw at the trans.
willwren is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
I'M F-ING ANGRY!!!! beckstyle 1992-1999 45 02-20-2005 05:15 PM
Halo, Halo you all Halo'ing? I'm Halo'ing just fine. Allmachtige Lounge 10 11-11-2004 10:58 PM
some more PW'ing FiReDeViL Your Ride: GM Pictures & Videos 16 08-31-2003 01:28 AM
PW'ing Oldsmobiles 1992 trofeo Your Ride: GM Pictures & Videos 2 08-30-2003 07:01 PM
#*&# ing 3800 series 1 !!!!! delta8t8 1987-1991 17 06-20-2003 12:14 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 04:11 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.