Cascade Crew

Xecris · Posted: Sat Oct 31, 2009 1:37 pm Post subject:

Sounds like the trans isn't locking up, would make a 200'ish rpm difference if it isn't. When I had another transmission put in my car, the lockup wasn't working. Easy test is to hit the highway, at light throttle, and tap the brake pedal just enough to light up the taillights. You should see the rpms jump up a couple hundred rpm.

My understanding with the 700r4, is that you aren't getting the cooling capacity if you aren't locking up, something like only 60% of your fluid gets through your cooling system if you aren't, and when it locks up, it will allow fluid to get from your torque converter through your cooling system. Could be hearsay, just what I got from the trans shop. Assuming it is a lockup converter, that is.

aaron_sK · Posted: Sat Oct 31, 2009 1:51 pm Post subject:

91camaro_rs · Posted: Tue Nov 03, 2009 9:32 pm Post subject:

aaron_sK · Posted: Tue Nov 03, 2009 9:39 pm Post subject:

No, that's a good thing. You should also be able to feel it unlock when you give it part throttle when cruising in OD.

Basically you swapped out your stock 25" RS tires for 17" chrome IROC's, correct? Depending on your exact aspect ratio, you gained around one inch diameter. That will lower the RPM at cruise.

91camaro_rs · Posted: Tue Nov 03, 2009 11:55 pm Post subject:

i had 15x7 (215/65/15) and i put on 17x8 (245/45/17), but now that the weather is getting crappy i put the 15's back on

next time im on the freeway ill try the overdrive unlock thing

aaron_sK · Posted: Wed Nov 04, 2009 12:35 am Post subject:

Your 215's are 25x8.5, your 245's are 26x9.6. That's your difference. Get down and Boogie!

Now that you got that settled, start thinking about something to make it faster. I, for instance, have been thinking a lot lately about how GM 3800II engines use the same 60* Metric bellhousing as the 2.8/3.1 engines... Squint

Al Hasse · Posted: Wed Nov 04, 2009 5:19 am Post subject:

I think I'm missing something here. Changing tire size will make the speedometer incorrect as well. Speed and RPM will have the same relationship regardless of tire size, until the speedometer gear is changed. Same was true when I removed the 3.08 rear end I had and swapped in a 3.23.

rjmcgee · The Hammer Joined: 08 Jan 2004 Posts: 2328

Somewhere around here is a pic of Dewey's stock tach on the dyno as his LO3 spins to 8,000+ rpm.

His tach is prolly not 100% accurate.

But this thread gets a big LOL from me!! Laughing

91RSVert · Posted: Wed Nov 04, 2009 9:17 am Post subject:

my tach says I idle at 3k rpms Laughing

91RSVert · Posted: Wed Nov 04, 2009 9:20 am Post subject:

91camaro_rs · Posted: Wed Nov 04, 2009 10:31 am Post subject:

Quasi-Traction · Posted: Wed Nov 04, 2009 11:02 am Post subject:

Boostd1 · Posted: Wed Nov 04, 2009 11:25 am Post subject:

3800's starters are on Bank 1 of the engine

91RSVert · Posted: Wed Nov 04, 2009 1:05 pm Post subject:

Ive never seen anyone try it on a gen4. Just gen3 and s10's

I have seen an L67 in a 55 chevy.

fiveoformula · Posted: Wed Nov 04, 2009 4:39 pm Post subject:

91RSVert · Posted: Wed Nov 04, 2009 5:30 pm Post subject:

fiero l67 is quite commen.

A friend here deals in the kit replicas. He wont touch one with an aftermarket motor. I tried to talk him into one with a northstar.

Quasi-Traction · Posted: Wed Nov 04, 2009 5:32 pm Post subject:

for what its worth, my starter's on the driver side.

91RSVert · Posted: Wed Nov 04, 2009 5:33 pm Post subject:

Boostd1 · Posted: Wed Nov 04, 2009 6:09 pm Post subject:

aaron_sK · Posted: Wed Nov 04, 2009 7:28 pm Post subject: