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Forum: 68-69 GTO Tempest & LeMans TECH 12-05-2018, 09:17 PM
Replies: 65
Views: 6,963
Posted By Heatwave
How much HP in your 455? Did you have to modify...

How much HP in your 455? Did you have to modify the tunnel for 4L80?

My 200R4 is rated at 550hp. Handles burnouts with no issue but I don’t run it at the track. With the 3.55 posi rear its the...
Forum: 68-69 GTO Tempest & LeMans TECH 07-13-2017, 09:01 PM
Replies: 234
Views: 84,951
Posted By Heatwave
Easy call....69 convertible...here's mine

Easy call....69 convertible...here's mine
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