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  #46 (permalink)  
Old 12-08-2012, 03:08 PM
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The Buick Grand national is a 3.8 V6.

Spend some serious cash will get you Brodix 4.3 V6 heads in two different intake runner sizes.

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  #47 (permalink)  
Old 12-08-2012, 03:27 PM
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The aftermarket support for the 4.3 is not good. There are cams, intake and some exhaust. No heads unless you count 18 degree from gmpp or other high dollar heads if their still available (3800 rpm and up power band), no cranks. This has all been hashed over previously- do a search. DV has as much experience w/the 4.3 as anyone on this board. Ask him what he would use to go fast on a budget, naturally aspirated. If he says a 4.3L V6, then there you go.

If all the OP wants to do is run a number, in this case 128 mph- he might be able to do it w/production Vortec heads and some porting along w/a cam. But if he wants to get a better return on his money, bite the bullet and do the V8 swap.

You make it sound like $1500 for a swap puts the idea totally out of reach. It's MY opinion that it's the best $1500 he could ever spend if he's really serious about going fast. If all he's trying to do is get some kind of bragging rights that he can go 120-plus then, again, so be it. But doing a swap opens up an almost unlimited amount of cheaper hp than you will ever get from a 4.3. EVER.

I don't know how or who builds your SBC 350s that they make only 180 hp, but stick around and listen- you will surely learn how to make a hp/ci on nearly the same money it takes for a stock rebuild.

I currently own two 4.3s, so it's not like I haven't looked into them.

Last edited by cobalt327; 12-08-2012 at 03:48 PM.
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  #48 (permalink)  
Old 12-08-2012, 03:38 PM
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Perhaps entertainment value only:

Making Big Horsepower With A 4.3L Chevy V-6 - Hot Rod Magazine
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  #49 (permalink)  
Old 12-08-2012, 03:43 PM
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Quote:
Originally Posted by cobalt327 View Post
The aftermarket support for the 4.3 is not good. There are cams, intake and some exhaust. No heads unless you count 18 degree, no cranks. This has all been hashed over previously- do a search. DV has as much experience w/the 4.3 as anyone on this board. Ask him.

If all the OP wants to do is run a number, in this case 128 mph- he might be able to do it w/production Vortec heads and some porting along w/a cam. But if he wants to get a better return on his money, bite the bullet and do the V8 swap.

You make it sound like $1500 for a swap puts the idea totally out of reach. It's MY opinion that it's the best $1500 he could ever spend if he's really serious about going fast. If all he's trying to do is get some kind of bragging righr=ts that he can go 120-plus then, again, so be it. But doing a swap opens up an almost unlimited amount of cheaper hp than you will ever get from a 4.3. EVER.

I don't know how or who builds your SBC 350s that they make only 180 hp, but stick around and listen- you will surely learn how to make a hp/ci on nearly the same money it takes for a stock rebuild.

90 V6 Cylinder Heads/23
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  #50 (permalink)  
Old 12-08-2012, 03:51 PM
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Look at the power band- 3800-4000 rpm- these are not what I would consider street heads. For the same money you can make a lot more power from a SBC. What I WILL say about the heads is they will make more power than the crank is gonna like for very long. Or the rods, for that matter. And lets not forget the production block is 2-bolt.
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Old 12-08-2012, 03:54 PM
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And aren't YOU the guy who said all the car mags are funny papers and cannot be trusted, etc. So what do you do but use a car rag as your "argument". LOLOL
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  #52 (permalink)  
Old 12-08-2012, 03:58 PM
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Chevy V6 229,262,4.3 v-6 Engine Info & Performance
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  #53 (permalink)  
Old 12-08-2012, 04:09 PM
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To recap: The OP's yet-to-be-purchased truck ain't gonna run 128 mph stock or nearly stock.

Aftermarket support for the Chevy V6-90 sucks. Period.

A SBC 350 will make more power/$ than a V6-90 Chevy.
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  #54 (permalink)  
Old 12-08-2012, 04:18 PM
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Quote:
Originally Posted by cobalt327 View Post
The aftermarket support for the 4.3 is not good. There are cams, intake and some exhaust. No heads unless you count 18 degree from gmpp or other high dollar heads if their still available (3800 rpm and up power band), no cranks. This has all been hashed over previously- do a search. DV has as much experience w/the 4.3 as anyone on this board. Ask him what he would use to go fast on a budget, naturally aspirated. If he says a 4.3L V6, then there you go.

If all the OP wants to do is run a number, in this case 128 mph- he might be able to do it w/production Vortec heads and some porting along w/a cam. But if he wants to get a better return on his money, bite the bullet and do the V8 swap.

You make it sound like $1500 for a swap puts the idea totally out of reach. It's MY opinion that it's the best $1500 he could ever spend if he's really serious about going fast. If all he's trying to do is get some kind of bragging rights that he can go 120-plus then, again, so be it. But doing a swap opens up an almost unlimited amount of cheaper hp than you will ever get from a 4.3. EVER.

I don't know how or who builds your SBC 350s that they make only 180 hp, but stick around and listen- you will surely learn how to make a hp/ci on nearly the same money it takes for a stock rebuild.

I currently own two 4.3s, so it's not like I haven't looked into them.
A stock chevy 350 is not going to make all that much power. Maybe 180 at the wheels if you lucky depending on what engine you start with. Now your talkng about having a motor built and then swap now were in the 4000 dollar range and still only making 300-350 hp like i said.

Not to mention he wont be able to drive it at all with a v8 in it since it wont pass emissions. Your not actaully thinking just disagreeing for the sake of it.
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Old 12-08-2012, 04:18 PM
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First contact with 4.3 was in a extended cab 1991 S10 rwd 700R4.Owned a RCR NASCAR 4.3 in a Chevette ran on the throttle stop 10.90 like clockwork.Big Bucks$$$$$.10 yrs of background of 4.3's in Astro vans.
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  #56 (permalink)  
Old 12-08-2012, 04:29 PM
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Emissions depends on what state you live in.
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  #57 (permalink)  
Old 12-08-2012, 04:35 PM
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Quote:
Originally Posted by hcompton View Post
A stock chevy 350 is not going to make all that much power. Maybe 180 at the wheels if you lucky depending on what engine you start with. Now your talkng about having a motor built and then swap now were in the 4000 dollar range and still only making 300-350 hp like i said.
Who said stock 350? I said
Quote:
I don't know how or who builds your SBC 350s that they make only 180 hp, but stick around and listen- you will surely learn how to make a hp/ci on nearly the same money it takes for a stock rebuild.
Quote:
Your not actaully thinking just disagreeing for the sake of it.
It's not up to you to say what I'm thinking or not thinking, either. What, you psychic?

I could drive a 350 S-10 all day every day where I live, BTW. Legally.
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Old 12-08-2012, 04:42 PM
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Lots of 350 s10's here in NYS for sale in Craigslist.
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Old 12-08-2012, 04:46 PM
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Stealth Conversions S10 V8 & V6 Parts
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Old 12-08-2012, 04:52 PM
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Quote:
Originally Posted by 1Gary View Post
Quote:
Originally Posted by cobalt327 View Post
And aren't YOU the guy who said all the car mags are funny papers and cannot be trusted, etc. So what do you do but use a car rag as your "argument". LOLOL
Yep I did and still do.Note the quote..........LOL
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