1995 trans am daily driver

**zoomo** · 01-05-2015, 12:40 PM

Not talking trash but just curious why the numbers went down with each run tubby? Mine always seem to go up after a few runs and of course jump around if the car is cooled between. But overall seem to go up as everything warms up and moves easier I assume.

***SSlowBoat*** · 01-05-2015, 01:01 PM

Originally Posted by zoomo

Not talking trash but just curious why the numbers went down with each run tubby? Mine always seem to go up after a few runs and of course jump around if the car is cooled between. But overall seem to go up as everything warms up and moves easier I assume.

3 pulls back to back to back, no cool down, room got hot, and I had valve float which was making the knock sensor go nuts and pull timing. A week later a gmpp rocker failed on me, so yeah. For the mileage and auto, it did pretty damn well. And pulled hard on the street when I put 3.73's in. The kid I sold it to is still beating the living hell out of it, and the heads have still never been off the motor

**zoomo** · 01-05-2015, 03:21 PM

Ha ya I would say that's pretty good maybe mines just not broke in yet lol

**zoomo** · 01-05-2015, 06:48 PM

Thanks to whoever adusted my photos where they arent 8 times the size of the screen! ha.

Helltee1, i cant get to your attatchment?

tubby just curious about comparison, did i understand you were running 1.6 rockers on the dyno or no? im just trying to add up the difference and figure out where i might be missing some or what i can gain.

I'm with yall on thinking theres probably 20 horses in 1.6 rockers.
not sure on the exhaust but theres gotta be some left there.
i dont have an air foil, seems theres a lot of debate on proven results there, but i can see how it makes sense.

Also for what its worth, std is worth a little power vs sae corrected. Edit: i just did a ton of reading on this and i guess it as most things is very debatable. It seems it changes the temperature and depends on that. Anyway thats a whole different story ha. On our dyno it seems to show up highest uncorrected, but not by much maybe 5 hp
I cant wait to add some more stuff and dyno it along the way tracking the progress.

On another less important note, I got my "synthetic suede" dash cover in today. it looks pretty good in my opinion. Anyone got any ideas on that ugly broken vent? I was thinking of maybe just removing the broken parts and cleaning it up in there real well...

***SSlowBoat*** · 01-05-2015, 06:57 PM

std wasnt actually that far off for the conditions of the day. so knock off 13whp. still good for a hotcam thru an auto, motor was nice and loose. yes i was running 1.6 rockers.

same rear gear as my father inlaws LE2 heads/cam stalled car, i was quicker on the bottom than he was. at 5200rpm and up he would pull away, but down low from 3000-5000 we were dead nuts even.

**zoomo** · 01-05-2015, 07:17 PM

Oh ya those are great numbers im just trying to compare mine to them ha, we really did bore mine close too, so its tight.

I guess that makes sense on the heads car, little less power down low and more up high getting a little bath tub effect.

Did you notice quite an increase in the seat of the pants feel when going from 273 to 373 gears? I feel like this car just doesnt suck me back in the seat enoguh ha.

**englundjd** · 01-05-2015, 07:42 PM

when I went from 2:73 to 3:73 I went from a 10 foot burnout to a 30 footer...

lol but really the difference is night and day

***SSlowBoat*** · 01-05-2015, 08:29 PM

^what he said. Night and day difference. The 3.42 in the heads cam car now work well, work even better with the supercharger, but the 3.73 I had in my car woke it waaaay up on the street. Like traction became an issue alot below 40 mph with good tires unless I heated em up first

**zoomo** · 01-05-2015, 09:01 PM

well yall got me drooling over parts once again ha it will probaly be a month or so before im able to put some more money into it, but in the meantime i'm going to keep my eyes open for a used exhaust or i might settle for a used 342 rear if i came across one. either way im sure soon i will add something else to it ha.

For now I'm going to work on my tune some more.
Also i want to dyno it again with the y pipe open and see how much of an increase that gets.
Cant wait till a 1/4 close somewhere opens back up so i can see if i can at least get in the 13's ha!

Thanks for all the comments and help guys ill keep you updated!

**HellTeeOne** · 01-06-2015, 10:37 AM

zoomo, here's the aforementioned dyno graph attachment. Not sure why it didn't show up in the previous post. Again, sorry for the poor photo/scan quality. It peaks right around 6k and more or less holds to ~6300-ish. The red numbers were from previous pulls with the stock engine with headers/bolt-ons. I have the hard copy here at my house and it's somewhat clearer, you can actually read the a/f ratio at the bottom. I can email it to you if you like. One notable thing about that cam I used, it actually seemed to like less timing than stock. When we added timing, it actually lost about 4-5rwhp. Wish I had retained/saved that tune file before I changed to my current setup.
Used cat-back exhaust should be easy to find for a few bucks. Lots of people parting out these cars nowadays. Hell most of my current setup I put together from parts I bought used.
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