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304 on the dyno |
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5926 |
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Traco 1968 AMC 305 was an overbored 290, and the 1969 was a de-stroked 360,
I think, or it was 1969 and 1970, point being there were 2 versions of AMC 305's because of yearly changes to the Trans Am Rules.
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CHAR
AMC Nut Joined: Feb/22/2019 Location: NW Florida Status: Offline Points: 354 |
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Something like that. I thought I read Donahue's '71 big body T/A car was powered by a heavily modded 360 that got the cubes down to the new rules. Still thats a lot of hurspurs out of the 304. I wonder what the Ford guys did to upwards of 500-600 HP out of their Boss 302 blocks vs. how far you could squeeze the 304.
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72 Javelin SST P code 360/auto/AC/rear defrost /Go Pack/Polar White w blue cord interior.
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PROSTOCKTOM
Supporter of TheAMCForum Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2458 |
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Tom
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Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods
1969 AMC Rambler Rouge Race Car 1974 AMC Hornet Hatchback, Wally Booth Outlaw Nostalgic Pro Stock Race Car Project |
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JolleyGreenSST
AMC Apprentice Joined: Jul/12/2018 Location: High Desert, CA Status: Offline Points: 239 |
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After re-reading this topic (it is worth going over again) as much as I love the results and the proof that the 304 is not a boat anchor... the difference between the 304/360 and other small blocks like the Ford 302/351, is that the bore is so small that the better flowing large valve heads will not fit like on the Ford. But other makes have the same concern like the Chevy 305 and Chrysler 318 are considered worrhless for serious power because of the small bores and restricted head choice... all of these engines are good and capable of making decent street power, it's just when you try to make anything over 1-hp per cube that it gets pricier then building an equivalent 360/351/350. So for a performance build I would go with the extra cubes as a no brainer choice, same or less money and more power is a winning combination. The point is this AMC 304 wasn't a budget build. You can probably get the same power out of a 360 for quite a bit less. Under 300hp keep the 304, over that and get a 360 if you don't want to spend a small fortune. Imho.
Edited by JolleyGreenSST - Sep/05/2019 at 10:02pm |
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"God is good all the time and all the time God is good!"
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PHAT69AMX
AMC Addicted Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5926 |
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Have to agree with JollyGreenSST... the small bores are a limiting factor,
but for a "driver" and if a 304 complete core engine can be had for say $50-$100, hey, it'd be fun.
On the Camaro Research Group Forum in the Trans Am Camaros area, in the Traco Fans thread, there are post by a period Traco employee, "PigPen", where he states Traco AMC 305's broke 500 HP. Not that it means anything or is practical or applicable, just a piece of interesting history for reference. |
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Jims69
AMC Fan Joined: Jan/02/2017 Location: E. Peoria Il. Status: Offline Points: 15 |
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That’s a great combo. Nice work
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Buzzman72
AMC Addicted Joined: Sep/15/2009 Location: Southern IN Status: Offline Points: 2725 |
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Oh. So it's all about the bore. So you're saying it's not a boat anchor, but really it is in your eyes. Gotcha. Edited by Buzzman72 - Sep/07/2019 at 7:44pm |
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Buzzman72...void where prohibited, your mileage may vary, objects in mirror may be closer than they appear, and alcohol may intensify any side effects.
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LakesideRamblin
AMC Addicted Joined: Dec/21/2015 Location: So. California Status: Offline Points: 2694 |
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To each his own regarding our great AMC engines. I think it is super cool what he did with HIS 304. Bad@$$. I hopped up my 360 in my 69 Rambler and I used old log style exhaust manifolds as I did not want to fool with headers given engine bay space limitations and other fiddling. I love the way it runs and really don't care if others have a different opinion about it.
Rock on with that 304, John! 😎
Edited by LakesideRamblin - Sep/07/2019 at 7:57pm |
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LakesideRamblin
69 Rambler 360 73 Javelin 360 "If you could kick the person in the pants responsible for most of your trouble, you wouldn't sit for a month." T. Roosevelt |
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232jav3sp
AMC Addicted Joined: Jan/09/2013 Location: Texas Status: Offline Points: 2451 |
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Considering the most expensive parts were the custom pistons (compared to off the shelf Wisecos for 360ci) everything else that was done to this 304 is what gets done to a "serious" 360. You're just not going to get the horsepower because it's a smaller air pump with smaller valves. When you get down to brass tacks, that's about it.
Yes, you could make the same power for less with a 360 (stock enternals), but, if a 360 isn't available to you (like here in East Texas) a 304 has now been proven to be a viable option. After all, most seem to want a snappy, driveable, 400hp; that seems to be the most common 360 question asked, and this particular 304 is darn close to meeting the needs of many out there. Heck, put those pistons and rods in one, with a wider lsa cam, on heads with less work then this 304, and throw some spray at it. That's my take on my it, anyway. Oh, and before someone comments on my not finding of a 360 in E. Tex, I've only searched Craigslist and have found very little AMCs in the area. I'm sure they are out there. I just don't know where to look.
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BMOgremlin
AMC Nut Joined: Sep/01/2019 Location: Deer Park washi Status: Offline Points: 285 |
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I personally don't care if an amc car has a 400hp 304 or a stock 401. Our devotion to the brand is what matters to me. So as long its its amc when the hood pops up I'm in!
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