81 olds 4.3L V8 power/durability test

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pencero said:
It looks like the 'guy with the 252 number' is Brian Harris who I believe is the same person I talked to on the phone since the shop is in NC & looks like he changed his # to a 336 now. He was very nice and I couldn't get him to stop talking about TBI on the phone this guy lives/ breathes to help people modify these type of engines and I notice now he has added an entire longwinded explanation page specifically about the 4.3 - which has no turbo charger setup on it. He claims buying the supercharger setup = 320 hp maximum & that's probably in conjunction with a specific set of modifications I'd assume

One tip he kept stressing to me on the phone is oil pressure is very important and that I needed to replace the 'oil pressure sending unit' before I did anything else or I was 'wasting my time'. I hooked up a gauge @ my friend's house later that week to make sure he knew what he was talking about & sure enough the oil pressure was far below factory reccomendation (my motor is still stock I never did end up modifying anything on the car yet - although I did get the sending unit lol)

Not trying to be rude here, but Brian from TBI is a dick. I can post emails where he insisted all this stuff had to be done or I was "wasting" my time. He called my friend Jake, who is an excellent mechanic who has built some superbly nice and powerfull chevy's "a moron". Brian can kiss my *ss while I do big smokey burnouts down the street with my 2:73 gears!
 
I ran into some little issues last night with the turbo setup I have which it would kick in to early or completely shut off which later I solved when I saw wiring unpluged. I did although do a dyno test which I regret bc they messed with the wiring and almost had the engine blow on the dyno bc it overheated, the turbo is putting down 11psi of boost which kicks in @ 3000rpm due to the fact that it redlines @ 4800rpm. the horsepower output is 203 which is really good for this engine since its what 110hp stock that is crap was what I got told and that the engine should have blown the first time I stated running this configuration the torque out put is 297. hopefully nothing bad happens
 
81KiddCutty said:
I ran into some little issues last night with the turbo setup I have which it would kick in to early or completely shut off which later I solved when I saw wiring unpluged. I did although do a dyno test which I regret bc they messed with the wiring and almost had the engine blow on the dyno bc it overheated, the turbo is putting down 11psi of boost which kicks in @ 3000rpm due to the fact that it redlines @ 4800rpm. the horsepower output is 203 which is really good for this engine since its what 110hp stock that is crap was what I got told and that the engine should have blown the first time I stated running this configuration the torque out put is 297. hopefully nothing bad happens


Hey, can you take a pic or post a vid for us to view?
 
I have a SP2P that would be perfect for that 260. The small triangle ports help low end velocity and allow you to put on Qjet or square bore 4bbl.
 
oldmansmonte said:
81KiddCutty said:
I ran into some little issues last night with the turbo setup I have which it would kick in to early or completely shut off which later I solved when I saw wiring unpluged. I did although do a dyno test which I regret bc they messed with the wiring and almost had the engine blow on the dyno bc it overheated, the turbo is putting down 11psi of boost which kicks in @ 3000rpm due to the fact that it redlines @ 4800rpm. the horsepower output is 203 which is really good for this engine since its what 110hp stock that is crap was what I got told and that the engine should have blown the first time I stated running this configuration the torque out put is 297. hopefully nothing bad happens


Hey, can you take a pic or post a vid for us to view?

I'll post up pics soon when I clean it up n get a good camera phone so pics come out lookin better
 
pencero said:
I feel like this is a very bad plan because you said 'this is my only ride this semester' so you are putting your eggs all in one basket - but who am I your dad? Definitely not. However if you want more power, I would highly reccomend you go to http://www.tbichips.com and call the guy at the front desk w that 252 # before you continue on this quest. I have a 350 tbi in my 93 caddy and I talked to this guy extensively about possibilities on it. He helped me to understand the entire tbi system better, and even put me on to some aftermarket injectors/ intake I could use if I wanted to get more power out of it. With a new chip, new wiring harness, and a cam you can nearly double your torque but you will probably have to upgrade the torque converter or it will break. You may also need to upgrade some wiring and get a new coil pack / etc. With some new injectors and a better computer you will get much more power and your fuel mileage should actually increase at the same time. The setup you are proposing is complex and time consuming; you are almost certainly going to hit snags and if you make a mathematical error you could screw up the whole engine. If you use a tbi chip with some new injectors and just run a bigger cam instead, everything is straight forward and the programmer will do all the math for you because they have been doing this for years and already have basically every set of variables you could concoct saved as text files and it's nothing for them to burn a chip w the program you need. It will cost you less, and you will have more torque/ better gas mileage than if you run this setup. With TBI, adding a turbo is just asking for a major headache and getting a chip burner on the phone is smart bc all the work has already been done for you ahead of time! You don't need a turbo to get more out of your TBI !

TBIChips = bad recommendation, no offense pencero. That guy doesn't know squat about tuning.
http://www.fullsizechevy.com/forum/gene ... s-com.html

I missed the 'this is my only ride' line, but I'll concur with that, if you don't have the money or means for other transportation, leave it be until you can come up with other means of getting yourself around if this goes south (and believe me, it can with boost and a poorly tuned combo).
 
Well this went way south engine blew and turned into molten. I was on my second dyno test of three I paid for when I decided to turn it up to 14psi which was probably to much but at least it broke the hp barrier for a 260 olds before it blew into flames. But no worries I still have my 350 to drop in and my cutty will be up and running shortly. Anyone have an iner fender plastic and a heater system and a 260 olds to re-test but this time if anyone would like to help me out
 
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