That aluminum 3.0/313hp...
#1
That aluminum 3.0/313hp...
http://www.race-cars.com/engsales/ch...58055081ss.htm
Let's have a serious tech discussion on this engine (keep the drama out)...
The block alone is worth at least $3k, that setup is well money spent for someone driving a midget car. I sold a 3500 block to a guy who is making 300hp from an iron duke, and 340hp on a 3.4/3400 with individual carbs. He has $1700 in the crank alone (I'm sure he didn't know the 3500 crank is steel forged lol)...
First of all, it's got Gen2 heads, which don't flow all that bad, but like the iron headed 60 degrees, it's the intakes that restrict them, LOOONG small-area runners gives a lot of torque, but they are not near equal length and have 180*sharp bends in them.
The distributor is mounted like that for a reason, the Gen 2 ports are right in line of the distributor hole, so you either have to have your dizzy with a pinnon gear at 90*, partially block the port with the dizzy shaft, or use a DIS system (better IMO anyways).
The weight of the block is not worth the extra money, a fully dressed 3500 iron block (forged crank) weighs 340lbs on the nose without the A/C compressor, alternator and P/S pump (brackets there, cast exh manis installed) - with that motor only weighing 72lbs less, and fully dressed in stock trim no doubt...
The 3500 (any gen 3 and up actually) also has 4 bolt mains (x-bolt), two in the cap, two in the webbed, thick, cast aluminum oil pan acting as a girdle. The starter is just on the wrong side, mounts are different and the aforementioned oil pan is so boxy, it won't clear our stock subframe (will a tubular k-member though). I know of someone putting hot 3500 in a Camaro here soon out of his FWD car, he is making over 270whp naturally aspirated, street-driven and far less than 8000 RPM
Takes more than 19# injectors to run it, though...
To say that 3500 heads can't use porting, you obviously have never had them on a flow bench, they only need a few kisses of the carbide, but they can made to flow quite a bit more. To hundred and a quarter CFM is cake if you know what you are doing, take your time and 250cfm isn't out of reach.
Please keep this a tech discussionand on topic, we aren'tcomparing the cost per hp, vs a v8, let's talk about v6's plz?
-John
Let's have a serious tech discussion on this engine (keep the drama out)...
The block alone is worth at least $3k, that setup is well money spent for someone driving a midget car. I sold a 3500 block to a guy who is making 300hp from an iron duke, and 340hp on a 3.4/3400 with individual carbs. He has $1700 in the crank alone (I'm sure he didn't know the 3500 crank is steel forged lol)...
First of all, it's got Gen2 heads, which don't flow all that bad, but like the iron headed 60 degrees, it's the intakes that restrict them, LOOONG small-area runners gives a lot of torque, but they are not near equal length and have 180*sharp bends in them.
The distributor is mounted like that for a reason, the Gen 2 ports are right in line of the distributor hole, so you either have to have your dizzy with a pinnon gear at 90*, partially block the port with the dizzy shaft, or use a DIS system (better IMO anyways).
The weight of the block is not worth the extra money, a fully dressed 3500 iron block (forged crank) weighs 340lbs on the nose without the A/C compressor, alternator and P/S pump (brackets there, cast exh manis installed) - with that motor only weighing 72lbs less, and fully dressed in stock trim no doubt...
The 3500 (any gen 3 and up actually) also has 4 bolt mains (x-bolt), two in the cap, two in the webbed, thick, cast aluminum oil pan acting as a girdle. The starter is just on the wrong side, mounts are different and the aforementioned oil pan is so boxy, it won't clear our stock subframe (will a tubular k-member though). I know of someone putting hot 3500 in a Camaro here soon out of his FWD car, he is making over 270whp naturally aspirated, street-driven and far less than 8000 RPM
Takes more than 19# injectors to run it, though...
To say that 3500 heads can't use porting, you obviously have never had them on a flow bench, they only need a few kisses of the carbide, but they can made to flow quite a bit more. To hundred and a quarter CFM is cake if you know what you are doing, take your time and 250cfm isn't out of reach.
Please keep this a tech discussionand on topic, we aren'tcomparing the cost per hp, vs a v8, let's talk about v6's plz?
-John
#5
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Car: '85 maro
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Re: That aluminum 3.0/313hp...
I'm the only sane one here. That's why I'm using a roller valvetrain in a 2 galley block and welding a bunch of crap on it to make it work.
#6
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Car: Still a 3rd Gen
Engine: 450HP 355
Transmission: TH350
Axle/Gears: 9" with 4.11's
Re: That aluminum 3.0/313hp...
I actually looked at my spare Gen2 block to see what it would take to make the gen3 anti-rotation blocks work in it.. no thanks.
I'd rather fab up 2 motor mounts then have to grind away the webbing of my block or weld to cast iron in the first place.
#7
Supreme Member
Re: That aluminum 3.0/313hp...
Get a mechanical cam like me. And, um...I don't think any of us are sane over here, I mean lets face it, were modding v6s in cars that could easily fit a big block. Which is kind of funny, cause this thread currently has some of the biggest perpetrators, myself included. Oh yeah.....I'm not just going overboard, I'm swimming to shore....mechanical cam from crower with camsaver lifters to take the abuse that 3-7k powerband, 8k+ redline, and 12.89 dynamic CR, for starters, since I can't find a shop that won't try to rip me off on a block swap, like all they have to is unbolt the damn block from tranny and motor mounts, engine hoist, and woila, drop new one in...why should that cost $1k, when I already have the thing stripped down to the deck?
Last edited by Project 3.4 Camaro; 03-01-2010 at 04:54 PM.
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#8
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Car: '85 maro
Engine: In the works...
Transmission: TH700 R4
Axle/Gears: 3.73 posi
Re: That aluminum 3.0/313hp...
Well I wouldn't say fitting a big block would be easy. I'm still throwing around the idea of grabbing a tbi 454 and ploping it in an RS to make a phantom SS though. Need to finish this motor before any more bench racing.
#9
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Car: 09 Cobalt SS Sedan. 92 Z28 vert
Engine: 2.0T EFR6758; 5.0TT T3/T4 8psi
Transmission: F40; 700r4
Axle/Gears: 3.76 LSD; 3.23 posi
Re: That aluminum 3.0/313hp...
I recently aquired the 60 degree v6 pages of a chevrolet power book from 1989. I scanned all the pages, but they make up a 7.4MB PDF. PM with email address for a copy. I would say this motor is more or less detailled in there... in addition to everything else you would ever want to know about this motor platform as of 1989.
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