4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

[Mariah180]

So I've read dozens of threads on 4.3 performance. General thoughts
are a gain of 10-20hp and 2-3mph top end along with overall
slighty better accleration. But most all
of what I read is 2nd hand talk. Does anybody have real world experience
on a 4.3 vortec swapped over to 4bl edelbrock and edelbrock performer intake.

Top end, crusining fuel useage change, need for
prop change??

 

[Bondo]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

Top end, crusining fuel useage change, need for
prop change??

Ayuh,.... Every hull is Different,...
But,...
You'll see more Top End, 'n Feel it right from the hole shot....
Fuel usage is totally dependent upon the righthand of the operator,+ how much he/she likes the feelin' of the new found Horsepower...
And,...
If yer at the Top of the rpm range Now,.... Ayuh, ya might have to reprop...

 

[Mariah180]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

Ayhy, I've never worked on or moddified jeeps, trucks, cars, or
motorcycles. I've never owned turbo, supercharged, v8, diesels.... In fact I don't even know how to start a engine.

So my question pertains to people who have owned or know first hand a 4.3 vortec in any boat. Don't care what general rubish comes
from people just looking to increase post count.

 

[gozierdt]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

Mariah180,
You're WAY off base. You've only got 4 posts on this forum. If you took some time to read other threads, you'd see Bond-o is one of the most experienced people here- over 30,000 threads. And his answers come from experience, not a need to "increase post count". Just go look at some of his threads and you'll see how much experience he has...

 

[ewenm]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

i had a 4.3lx (4bbl) and swapped it to a 4.3 gxi (efi)volvo penta, now there was a worth while swap.

if you really want to liven up your boat dont muck around with carbys go straight to efi

or tpi, im sure Holley make a marine kit

 

[dsmmace]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

I have done the swap but add on a cam and more compression and headwork.

Use the 1409 Carb and 1485 Calibration kit. I pretty much bolts on and is ready to run with a stock motor as is, any other mods and you will have fun changing jets and metering rods.

Yes you will have more power out of the hole and top end.

Depending on rpm and prop and drive ratio on your boat you might have to switch from a 21pitch prop to a 23pitch prop. YMMV.

Do a search. Many of us have switched.

 

[Cpt D]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

If I remember right, Bondo has the Vortec 4.3 and is talking from experience. I have a non-vortec 4.3 with an eldebrock intake and a quadrajet and I love it. It performs great, but I do want to find vortec heads to put on it to try and get a little more power, but I can't bring myself to take apart a motor that runs perfect as is. You know, don't fix what ain't broken. I can say you will notice a big difference with the four barrel. Go for it. And try not to insult the people that are trying to help you (for free!!!).

 

[pwpns]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

Mariah180, I have a 1999 Stingray 192 RX with a 4.3L Vortec. I have installed a Edelbrock 2114 performer intake and performer 1409 carb. I also had a 3 angle valve job done and added comp cams 1.5 roller rockers and adjustable valve train studs to the heads and a comp cams 266HR roller cam. You will need the 1485 calibration kit for starters but I would also get a 1488 kit to give you something to experiment with. With a vortec motor you will need the extra fuel and the 1485 kit was designed for pre-vortec motors. I personally am using .089 main and secondary jets with .068x.047 rods. You will have to experiment to find what works in your boat. As for as gains I don't know how much I gained because the reason for all the mods was that the motor originally blew up on the first day I took it out, however I can tell you this the boat feels strong already and I haven't finished tweeking it yet.

 

[Mariah180]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

I just sold my 22' crownline with 350mag mpi and hull corsa exhaust. Reason - didn't use it enough to justify it's cost. Same reason why I won't be opening up the engine for major mods. Intake, carb and tuning is at my limit.

My thoughts are the extra top end power would allow a taller pitch on wot. But more important better cruising speed and Lower fuel consumption with a taller prop. I'm a set it at 3000rpms and cruise type guy.

If I do the swap I'd like to heat coat the intake to squeeze out the last inch of power on the simple swap. Swaintech coatings is who I've used in the past.

Got to get that hydrofoil off the prop from the precious owner. 19" SS mirage plus prop netted wot of 300rpms less than the lower end of the spec.

 

[Mariah180]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

My initial thread was clear. I was asking for select information and not looking for more general information. I've already read through dozens of such threads. Btw thread count doesn't = knowledge. Thread count = time spent typing.

I'll just search for data on real test on the same hull using the 4.3 and he 4.3lx knowing that the edelbrock setup would be slighlty better than the mercury 4bl.

Thanks again to those that posted valid info to my question.

 

[John_S]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

<delete> : Reducing wasted bandwidth...

 

[Mariah180]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

I asked nothing about my boat.

If xyz boat hull is the constant and the variable is adding the intake and carb then that data is somewhat useful to look at the gains that boat had. If several people chime in with different boats but all swapped the intake and carb them the average of thier data would be great.

Now if Billy swapped intakes and carbs then also swapped over to a different hull and prop then that would be useless
info.


If you had a 4.3l vortec head 2bl and have swapped with a edlebrock performer intake and edelbrock 4bl then please chime In. Otherwise those with general chatter please waste bandwidth on another thread.

For the third time- please only 4.3l vortec heads who have went from factory to edelbrock 4bl with performer intake. No cams, rollers, props, or hull
changes.

 

[wca_tim]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

I put a vortec head, 4.3 in my boat with the same performer intake and 1409 carb as above. non balance shaft engine with stock vortec heads, i found that I needed one step richer than the jets in the kit edelbrock recommends for that carb on that engine. it was 4-5 mph faster and ran better / well throughout the rpm range. What else do you want to know? It was definately worth the ca. 500 for the carb and manifold... but it was still a near stock 4.3, not a 350...

 

[imported_TheMan]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

My '89 SeaRay came with a 3.0L. It used to top out around 36 mph.

I swapped in a 2 bbl non-vortec. I did not change gear ratios. I played with props a little bit. I think I've been using a 23 pitch. Top speed was around 42 mph. The block was cracked and needed replacing.

I finally built up another non-vortec 4.3l with vortec heads, 0.030 over pistons, 2114 intake manifold, and 1409 carb. Boat will do up around 47 mph now. So, my experience has been an 11-12 mph gain on the top end over the 3.0L, 4 - 6 mph over top end of 2 bbl. The 2bbl was pretty good on the holeshot and I haven't noticed any major differences, but i still need to do some tuning. You really feel the power in the power stage of the carburetor.. and of course at WOT.

That is my experience and as always YMMV. I considered a gear ratio change but I don't think it is worth the time as I'm satisfied.. plus going to sell this boat.

 

[Mariah180]

Re: 4.3l vortec 190hp two barrel to a Edelbrock 4bl performer intake

Tim, did you start out with the good heads or was the 5mph gain part of heads,carb, intake.