I've did a several tests on my new 383. The engine has a 1205 head ports size, ported lower base and ported runners from Edelbrock, ported stock upper plenum, but stock exhaust manifold with racing...

I've did a several tests on my new 383. The engine has a 1205 head ports size, ported lower base and ported runners from Edelbrock, ported stock upper plenum, but stock exhaust manifold with racing...

1227727 ECM $8D
Hello everyone,
I've been tuning the car for a new engine and after uploading a new bin file (I was looking to get rid of low throttle jerking/choking) adjusting AE),the PE would...

I've recently replaced the ECM and the new one is able to start both fans. So clearly if the relays were good and wiring was fine the only thing left was the ECM. Fair enough, one of the integrated...

Hello everyone,

I've been trying to adjust the settings for a new 383 engine that runs mild cam and larger intake runners, and there seems to be an issue I don't understand. At 1000-1200 rpm and...

yes, when it’s cold they fans are commanded off then I can seen in TPro when the ecm commands them on but nothing happens. I’m currently using s-aujp xdf but it did the same thing with the normal xdf...

it’s the 1227727 but already bought 1
the MPG and hvac temperature seem to work now but it still doesn’t turn on the fans.

Hello everyone,

After I swapped my l98TPi 1991 for a new 383 custom SBC and modified some parameters in the bin file accordingly I've noticed there is a problem with the ECM. Recently I wrote an...

Hello,
What happens if I lower the VE values or even set them to 0 at lower kPa in the engine braking region, particularly at higher rpm 2000+ ? Normally there is DE that kicks in gradually. Will...

Thank you
PE delay was suggested by a member. I’m exploring possibilities. Until the new engine comes I want to prepare the ground. As you said it’s better to keep it simple.

18920
If I modify PE, increasing afr slightly may increase torque, setting it to 14.7 seems a significant change that may increase combustion temperature too much.

Now the question is if I could use these https://www.summitracing.com/parts/bch-0280155968 or I will have to buy something else. My concern is at idle it is going to need half BPW like below 1ms...

I just bought 42lb 🤦🏻*♂️

btw the current injectors are bosch yellow-orrange, probably 19-20lb. I could go with the large diameter runners from asm but it would make it more difficult when working on the car

IÂ’m preparing and engine swap to a 383 from a 350 in a 91 Corvette TPI. What would be the precautions I have to take for tuning the ECM ?
for example if the mixture is way off or wrong timing I...

That’s for a different topic, anyway the engine is not on the car yet, I’m currently studying some details

Hi,
I've worked on an excel calculator, based on one I downloaded from this forum, it's for TPI, and it might help beginners (like me :) )
basically uses a single BLM table in the definition...

thank you

I’ve watched this presentation youtu.be/E0yZdLkpvR0 some while ago and these guys did some extensive research on this transmission. They say it can handle even 475lbft although it’s rated by the...

The car is registered as historical, I have no idea what kind of checking they will do for the next inspections so it’s safer to stick with the stock intake.
I can apply appropriate throttle and...

Did you run it with headers or with a stock iron manifold? But yes, it still seems off. Can you gain 144hp only by installing large headers and removing water pump, alternator, smog pump?
With the...

330Hp @~4700 is what I saw in the real dyno test with mild cam, and stock tpi. He is using large headers on all test. The 383 cammed, stock TPI manifold made 410hp constant between 4500 and 6000rpm....

thank you, that’s a little disappointing :)
the guy that made those tests manage 330Hp on a mild cam 98 tpi, but with headers, no air filter, electric water pump, no alternator. I wonder why such...

That would be interesting
it is a restrictor but it also accelerates the flow at low rpm.
compression 9.8:1.
Rocker Arms: 1.5 Ratio, Full-Roller
Cylinder Heads: Aluminum, 180cc Intake Port,...

My old engine is at the point where it might need some refreshing soon, 135k miles, it still runs well though, but I wanted a bit more power, stock 245hp is not bad considering the high torque...