deja Posted April 3, 2008 Share Posted April 3, 2008 After DNI where I turned a best 12.921 I wondered how much HP this bone stock 94 LT1/4L60E with 115,000 miles really produces. The only modes I have made are hugger headers and a cold air system. Curiosity got the better of me so I just got back from the dyno, that was fun. That is one noisy beast at 128 mph! It did better than I expected, best of the 3 pulls: 265.6 RWHP @ 5200 and 308.0 Torque @3400. The curves were very smooth, no drops at all. HP started to drop off but only dropped to 250 at 6000 rpm. Looks like I need a cam and heads, LOL. Quote Link to comment Share on other sites More sharing options...
CantZme Posted April 3, 2008 Share Posted April 3, 2008 very nice, what were your a/f's like? Quote Link to comment Share on other sites More sharing options...
deja Posted April 3, 2008 Author Share Posted April 3, 2008 very nice, what were your a/f's like? I have no clue! I have not attempted to change that from stock. Its probabaly running a bit rich like most LT1s in stock form do. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted April 3, 2008 Share Posted April 3, 2008 that dyno chart seems to indicate your volumetric effiency falls off pretty fast after about 4500rpm,what goes in needs to go out, it could be a restricted exhaust, a the lt1 heads are better than most stock sbc heads but hardly race quality and the stock cams fairly mild, what converter stall speed and rear gear are you running? have you done a cpr test? Quote Link to comment Share on other sites More sharing options...
deja Posted April 3, 2008 Author Share Posted April 3, 2008 I did notice that but didn't really know what it should look like. I'm running a stock Z28 4L60E converter, or at least as far as I know and a 3.54 rear gear. I have Sanderson Blockhugger headers and 2.5 " dual exhaust running through small mufflers and resonators. CPR test????? that dyno chart seems to indicate your volumetric effiency falls off pretty fast after about 4500rpm,what goes in needs to go out, it could be a restricted exhaust, a the lt1 heads are better than most stock sbc heads but hardly race quality and the stock cams fairly mild, what converter stall speed and rear gear are you running? have you done a cpr test? Quote Link to comment Share on other sites More sharing options...
rustorbust Posted April 4, 2008 Share Posted April 4, 2008 compression Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted April 4, 2008 Share Posted April 4, 2008 yeah compression ratio test, it should indicate if your getting decent ring and valve sealing before you go doing mods Quote Link to comment Share on other sites More sharing options...
deja Posted April 4, 2008 Author Share Posted April 4, 2008 DOH! My long term plan is a different engine. I have a 95 LT1 I bought to use in the car but after pulling the heads I decided it really needed to be rebuilt. Then I picked up this setup and it was easier and faster to use a known running engine. I won't do any modes to this one but a CRT test might be interesting anyway. From the looks of the rest of the car this engine was not maintained very well. yeah compression ratio test, it should indicate if your getting decent ring and valve sealing before you go doing mods Quote Link to comment Share on other sites More sharing options...
jnjdragracing Posted April 4, 2008 Share Posted April 4, 2008 Hey Dale, Great that you went to the Dyno. When are you going to post video, I know you took some? Tell me the truth now was it an experience or not. The Dyno is a little over whelming is it not. How did you like hearing that motor roar....... Good numbers to me for an old engine with that many miles on it. But like they say when an engine has a lot of miles on it, it gets loose and loose is good. Less friction. Hell I would re-ring it, maybe do some head work and put normal headers on it and throw away the block hugger headers. Change the camshaft and go with a good Hydraulic roller that Comp cams reccomend for your setup. John Quote Link to comment Share on other sites More sharing options...
deja Posted April 4, 2008 Author Share Posted April 4, 2008 Ah grasshopper you know me well, LOL. http://www.dejavideo.net/280z8/dyno.wmv Please right click and download. Note Heather, the cute redhead setup girl! Yeah, it was a blast, nothing as spectacular as your pulls (I didn't think the straps were going to break) but still a rush. When he kicked it I was right behind the car and thought my head was going to explode, Heather brought me ear protection! I didn't realize how useless my mufflers were at full throttle. All good ideas for the engine. Like I mentioned in my reply to grumpy all that is in my long term plans except "real" headers (I don't thing they would fit with the JTR set backs. Hey Dale, Great that you went to the Dyno. When are you going to post video, I know you took some? Tell me the truth now was it an experience or not. The Dyno is a little over whelming is it not. How did you like hearing that motor roar....... Good numbers to me for an old engine with that many miles on it. But like they say when an engine has a lot of miles on it, it gets loose and loose is good. Less friction. Hell I would re-ring it, maybe do some head work and put normal headers on it and throw away the block hugger headers. Change the camshaft and go with a good Hydraulic roller that Comp cams reccomend for your setup. John Quote Link to comment Share on other sites More sharing options...
jnjdragracing Posted April 4, 2008 Share Posted April 4, 2008 Liked the video...... Also the Dyno assistant.... John Ah grasshopper you know me well, LOL.http://www.dejavideo.net/280z8/dyno.wmv Please right click and download. Note Heather, the cute redhead setup girl! Yeah, it was a blast, nothing as spectacular as your pulls (I didn't think the straps were going to break) but still a rush. When he kicked it I was right behind the car and thought my head was going to explode, Heather brought me ear protection! I didn't realize how useless my mufflers were at full throttle. All good ideas for the engine. Like I mentioned in my reply to grumpy all that is in my long term plans except "real" headers (I don't thing they would fit with the JTR set backs. Quote Link to comment Share on other sites More sharing options...
rytherwr Posted April 5, 2008 Share Posted April 5, 2008 DALE!!!! You SLY devil, you...gotta keep an eye on you ALL the time!! ) Great stuff! Sounds great and I'm with John...numbers aren't bad for stuff that you yanked out of the yard. Now I know how to choose a good dyno...based on the setup assistant, right? See, John and Jerry should have spilled the beans before!!! ) Go figger... Wayne Quote Link to comment Share on other sites More sharing options...
deja Posted April 5, 2008 Author Share Posted April 5, 2008 LOL, my dyno is not the same one JNJ use. I didn't even know they had hired her. Ya gotta love a woman that can turn wrenches even if she was a Ford mechanic before she came to Balanced Performance! DALE!!!! You SLY devil, you...gotta keep an eye on you ALL the time!! ) Great stuff! Sounds great and I'm with John...numbers aren't bad for stuff that you yanked out of the yard. Now I know how to choose a good dyno...based on the setup assistant, right? See, John and Jerry should have spilled the beans before!!! ) Go figger... Wayne Quote Link to comment Share on other sites More sharing options...
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