squirrels

I know the 4L60E is rated at 450HP, which is about 380 at the wheels, assuming 15% drivetrain loss. I plan to get a 12-bolt before I get heads/cam, but I don't know if I'll have the money to upgrade the trans just yet (although that is in the future <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ).

Is anyone here running the stock 4L60E with ~400 rwhp? If so, how long has it lasted? Or is the 450HP rating rearwheel and not crank?

OBSSSD@work

I'm about to. I'm running 370/380 now and have a bigger stall (4000) and Stage II heads going in soon. I have Ed Wright programming and am shifting at 6600-6700 with extra line pressure at WOT. No problems so far but I know I'll be pushing it after the heads go on.

M3EATER

I have STOCK HP & a blown 4L60E (with a Trans-Go kit & B&M cooler)...... <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

Now replaced mith an M6

<img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

<small>[ September 10, 2002, 02:48 PM: Message edited by: M3EATER ]</small>

nysbadmk8

400 rwhp and much more on spray... totally stock tranny... 6000miles in 4 months...

My trick you ask? keep the tranny temps below 180!!!! b&m pan for extra 3 quarts, and a big *** cooler, slp fan switch... i keep my tranny near 170 degrees... and i beat the hell out of it... just do frequent fuild changes..

<small>[ September 10, 2002, 03:06 PM: Message edited by: nysbadmk8 ]</small>

squirrels

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by nysbadmk8:
<strong>400 rwhp and much more on spray... totally stock tranny... 6000miles in 4 months...

My trick you ask? keep the tranny temps below 180!!!! b&m pan for extra 3 quarts, and a big *** cooler, slp fan switch... i keep my tranny near 170 degrees... and i beat the hell out of it... just do frequent fuild changes..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I've got a B&M 24,000 GVW cooler already and will be putting my SLP fanswitch in sooner or later. IS the B&M pan really worth it? I'm only using a Vig2800 converter and I'll probably only be running it hard once in a while.

It's just that if I have to choose between a built tranny and a built rear, I'd rather go with the rear (changing out the 2.73 for 3.42 too <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ). This is my DD, though, so I don't want the tranny taking a crap because I didn't do things right the first time.

Of course, an FLP Level IV will be going in there before I do anything BEYOND heads/cam. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Orange Krush

27,093 miles and no more 3rd or 4th ! <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

6 passes on the 150 shot didn't help though I'm sure ! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Never mind the 23 10 pound bottles of juice I used on the 75 shot to date ! <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />

The Guy in MY 99TA

I have about 300RWHP (yeah 300) and my tranny died 3 times already.

Josh S.

Quickin

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by squirrels:
<strong>I know the 4L60E is rated at 450HP, which is about 380 at the wheels, assuming 15% drivetrain loss. I plan to get a 12-bolt before I get heads/cam, but I don't know if I'll have the money to upgrade the trans just yet (although that is in the future <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> ).

Is anyone here running the stock 4L60E with ~400 rwhp? If so, how long has it lasted? Or is the 450HP rating rearwheel and not crank?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">No way its a rear wheel rating. FLP wouldn't be in business if that were the case. Getting a 12 bolt will make that tranny the weak link alright. Your first hard launch could be the last.