300WHP Supernatural 3.XX Coming Soon! (Page 54/54)
Trinten APR 23, 10:58 PM
That is awesome news man. I'm glad to hear that everything else checked out!
La fiera JAN 14, 09:01 PM

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Originally posted by La fiera:



Finally got it to where I can drive it to the dyno on its own power. After fixing the fuel flow problem, the ECU setting problems and other problems I was able to Dyno it. But driving to the dyno and at the dyno I had a problem, it didn't wanted to go over 5000RPMs. It felt like it was hitting the rev limiter even though I set the limiter at 9000RPMs. I did log every pull so I got plenty of data to analyze.
This is the Camaro 3.4L bored out to meet 3.7L, same iron heads, no juice, super or turbo charger; all NA.

324WHP & 360WtQ @ 4900RPMs



After installing the newer engine I finally figured out what was preventing this engine from making torque past 4300 and hp past 4900rpms. After installing the 3.7L long rod engine I had the same exact problem at the same RPMs. So what I did was to take away fuel from 4300 up by about 30% to 7800 and the engine revved crispy clean and I was able to do street pulls on 3rd gear all the way to redline, 7800 with no problem. Took the air filter off and did the same test and it fell on its face without misfiring. Added the same 30% fuel that I had previously past 4900 and it pulled very hard up to redline. So, the problem was the air filter. It didn't flow enough airflow for what the engine was asking past 4900rpms. It happens to the best of us, it's the little things that get you!
Frenchrafe JAN 15, 02:42 AM
Yeah, I had the same thing happen with my old '77 Trans Am. I had to cut a second air intake hole on the filter aasembly. Just wasn't breathing properly with all the engine mods!

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"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero
https://youtu.be/hUzOAeyWLfM

[This message has been edited by Frenchrafe (edited 01-15-2024).]

jelly2m8 JAN 15, 04:51 AM
6 plus years on and your still putting engine together? You and Will have a challenge going?
La fiera JAN 15, 10:39 AM

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Originally posted by jelly2m8:

6 plus years on and your still putting engine together? You and Will have a challenge going?



Yes I know! You have to remember that what Will and I are doing is our hobby, it is not to please anybody but us because we are the ones putting the time and money in these projects. Yes, we share our stuff here so people get a glimpse of what we have done to help them if they want to do something similar in the future. Then you got life's responsibilities, that's why we don't post much because time is limited. I don't know what Will is up to but I have 3 more engines that I'm working on besides the one in the car that is up and running.
So yes, it might take me some time but when I say "I'll make this and that" I always deliver; I said I'd make 250WHP and 300WHP and I didn't disappoint anyone. Father always told me over and over, "Don't get into a fight that you know you are going to loose"!