07 Pontiac Grand Prix - Simple DD.

[Nokooler]

I will probably be heading to ubly tomorrow. MMM has another TnT at the end of this month.

[Nokooler]

Well I went to Ubly, prep wasn't great for street tires, and I couldnt drive around the waterbox. Car was still pulling timing due to the heat, I only made three passes. 14.8@90mph.

I'll be doing rotors/pads next weekend, hopefully in July I can get a header/downpipe and tune.

[Nokooler]

My brother and I did some tuning today.
Mods - Offroad downpipe.

[TWOBEERS]

I miss my 99 GTP . Went 14.0 with a canned tune, 3.25 pulley, cat delete, and a bunch of little stuff on street tires. Was hard to get it to hook. When it does, you will have trans problems.

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[Tin]

I miss my 99 GTP . Went 14.0 with a canned tune, 3.25 pulley, cat delete, and a bunch of little stuff on street tires. Was hard to get it to hook. When it does, you will have trans problems.

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'99 didn't have the heavy duty 4T65, they were held together with paper clips

[Beigg]

'99 didn't have the heavy duty 4T65, they were held together with paper clips

Thought that was 97 only (non HD 65E)

[TWOBEERS]

Thought that was 97 only (non HD 65E)

Yea, my 99 had the HD trans. Better than the non HD. but still not a great trans.

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[Tin]

Thought that was 97 only (non HD 65E)

Nope, it's '00 and up.

[Tin]

Yea, my 99 had the HD trans. Better than the non HD. but still not a great trans.

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Costs a good amount to make them stay together too.

[Beigg]

Nope, it's '00 and up.

I'll have to look at the current trans on hand to check it, but I recall the 4T65E-HD in position is from a 1998 car. It does in fact have a removable diff housing...