355 TBI VS 383 TBI BUILD

[c1500deathtrap]

Worked over TBI heads. Ported a little and a 3 angle valve job. They came on the crate engine.


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Blueprint crate?

 

[Chewy1576]

Blueprint crate?

Yes sir


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[ccreddell]

I need to revise my earlier post. Got to calculating what I would need to support the expected 400HP or so, and my 350 injectors are just not going to cut it. So, in adition to the 454 spacer, Im going to run the 454 TBI unit too. Calculations said I needed 106lbs injectors,so I'll run the 80#ers at about 23lbs and be good. The vacuum referenced FPR will keep it from having idle problems.

 

[Chewy1576]

I need to revise my earlier post. Got to calculating what I would need to support the expected 400HP or so, and my 350 injectors are just not going to cut it. So, in adition to the 454 spacer, Im going to run the 454 TBI unit too. Calculations said I needed 106lbs injectors,so I'll run the 80#ers at about 23lbs and be good. The vacuum referenced FPR will keep it from having idle problems.

I have all those parts on the shelf ready to go if you need them.


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[JCribb]

I need to revise my earlier post. Got to calculating what I would need to support the expected 400HP or so, and my 350 injectors are just not going to cut it. So, in adition to the 454 spacer, Im going to run the 454 TBI unit too. Calculations said I needed 106lbs injectors,so I'll run the 80#ers at about 23lbs and be good. The vacuum referenced FPR will keep it from having idle problems.

On that though, I had a bad experience with rebuilt 454 injectors off of fleabay. I don’t remember the seller, but one injector just dumped gas while the other sprayed normal. Just giving a heads up.

 

[ccreddell]

I have all those parts on the shelf ready to go if you need them.


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I appreciate that. But I already have the parts, just had to do the linkage swap thing-and clean them up, of course.

 

[L31MaxExpress]

I need to revise my earlier post. Got to calculating what I would need to support the expected 400HP or so, and my 350 injectors are just not going to cut it. So, in adition to the 454 spacer, Im going to run the 454 TBI unit too. Calculations said I needed 106lbs injectors,so I'll run the 80#ers at about 23lbs and be good. The vacuum referenced FPR will keep it from having idle problems.

The 400 HP Marine 502 used a single 2" bore TBI unit with 61 lb/hr high pressure injectors at 32 psi for 104 lb/hr.

I ran a Weiand 177 supercharged 350 TBI on stock low pressure 350 injectors using a boost/vacuum refereced regulator set at a base 30 psi but under 10 lbs of boost they were running at 40 psi. At idle they ran about 22 psi.

 

[Shkafar]

Exactly what I’m doing. I tried tuning the stock TBI to work, but gave up.

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Hi.
I want make something simular.

Heads - vortec
Intake - Edelbroke TBI for Vortek
Stroker KIT
New camshaft/
But delivery very expansive

But what about 4L60E ? I think , need make 4L65E? What do you think?