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Swapping small block for big block?

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UNDONE

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« Reply #25 on: January 27, 2008, 11:35:42 AM »
To aid in your header decision process. It is my understanding that all the "Big Boy" race teams are either making their own or having Rewarder do theirs... I met a guy who has lightnings at, if you ask me they have a funny sound to them. Kinda of a hollow log knocking sound. They're on a Baja offshore with a blown 454. Just my ear though, and I'm legally deaf.


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bkplesh

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« Reply #26 on: January 27, 2008, 07:43:03 PM »
do one like this ;Dhttp://sandiego.craigslist.org/csd/pts/553864442.html

GAWnCA

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« Reply #27 on: January 27, 2008, 07:49:46 PM »
do one like this ;Dhttp://sandiego.craigslist.org/csd/pts/553864442.html

http://sandiego.craigslist.org/csd/pts/553864442.html  that should work better.  :)
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« Reply #28 on: January 27, 2008, 08:02:05 PM »
R/C the only thing thats hard to get for small blocks are thru hull headers ,personally I'd go with polished center rize anyhow for that application (I'm running 600 + hp thru EMI's) Here two 18' foot boat we rigged in the early 2k's both ran real well ! the dark blue boat had a high miles motor out of a "Burb"  Heck the White water guys are gettin huge ##'s out of sbc's Tom






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« Reply #29 on: January 27, 2008, 08:29:39 PM »
Yeah, maybe the SBC is the way to go.  Heck, I don't know.  I've got time I guess, was planning the build over a couple years anyway.  That craigs listing looked good. Tom, you make sense, as usual. However, because I plan on doing this 1 time, I think I'll probably be going with the BBC that I already have.  I think if I decided to sell it, the BBC would probably be worth more and be more desirable, than  a SBC.  I'll deal with the cost of headers, when/if I get that far.
R/C

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« Reply #30 on: January 27, 2008, 10:54:24 PM »

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« Reply #31 on: January 28, 2008, 06:51:05 PM »
Here's a little small block enticement.

http://myspacetv.com/index.cfm?fuseaction=vids.individual&videoid=9115630

Man, is that cool sounding or what?  No other sound like a underdriven blown motor.  AmatoSanger's short video was the one that made me want a blown motor.   Now thats cool.
R/C

1988 16' Tahiti SBC  &  1977 18' Dimarco

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« Reply #32 on: January 29, 2008, 06:20:25 AM »
 Been doing some thinking...  Tom, Greg, Undone, I think I've seen the light.  Looked at some of the goods that T&L Engine Development had to offer and some others.  Weight difference between BB & SB is approximately 175lbs.  Thats quite a bit. 408 stroker motor at 510hp and 500 lbs torque, WOW.
R/C

1988 16' Tahiti SBC  &  1977 18' Dimarco

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« Reply #33 on: January 29, 2008, 10:30:45 AM »
Don't forget the two year warranty. And they're only $4k complete. If you wanna get real crazy go check out the 4 cylinder chevy ecotec 2.0 supercharged. boost it up a lot and throw that in your boat. Weight savings then is approximately 7-800 pounds. Ecotec weighs 185.

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« Reply #34 on: January 29, 2008, 12:29:21 PM »
You could always go with a Mazda RX-7 3 rotor Rotary turbo motor.
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« Reply #35 on: January 29, 2008, 07:10:58 PM »
Greg, no pretend Porsche motors for me.  I was really diggin that 408 stroker from T&L.  That bad boy would be cool. 
R/C

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« Reply #36 on: January 29, 2008, 08:21:00 PM »
Josh's 408 windsor stroker makes ungodly HP and pulls/leaves harder than most Big block boats I've been in Tom

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« Reply #37 on: January 29, 2008, 08:37:15 PM »
You could always go with a Mazda RX-7 3 rotor Rotary turbo motor.

Good luck tuning that , unless you are a rotary specialist. I talked to multiple rotary shops and they all say it is a bitch to get the 20B to run right.
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« Reply #38 on: January 29, 2008, 08:54:18 PM »
Good luck tuning that , unless you are a rotary specialist. I talked to multiple rotary shops and they all say it is a bitch to get the 20B to run right.

These guys must be doing it right.





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« Last Edit: January 29, 2008, 08:56:41 PM by GAWnCA »
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« Reply #39 on: January 29, 2008, 09:54:35 PM »
don't waste your money trying to get something that specialized done.

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« Reply #40 on: January 29, 2008, 10:29:55 PM »
don't waste your money trying to get something that specialized done.

Would be sort of humbling to have a 3 rotor motor blow a BBC or BBF supercharged motor away!   >:D
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« Reply #41 on: January 30, 2008, 07:51:44 AM »
not really considering the cost of that massive turbo and it's tuning... Not to mention the cost of the 3 rotor itself... I don't know how much they are but I'm sure you could build a mean V8 with that money and still have some left over.

As for the ecotech, someone offered one yesterday. I dunno yet, and they're cheap parts and all are cheap. They're also mostly forged components and able to handle 20lbs of boost flawlessly. At least thats what the engine builder down the street told me. All his internals were stock, minus some flow benching/work on the heads and at 20PSI she's pulling 500HP and 380lb/ft on pump gas. Not bad for a 185 pound package. Stock supercharger too.

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« Reply #42 on: January 30, 2008, 11:11:44 AM »
not really considering the cost of that massive turbo and it's tuning... Not to mention the cost of the 3 rotor itself... I don't know how much they are but I'm sure you could build a mean V8 with that money and still have some left over.

As for the ecotech, someone offered one yesterday. I dunno yet, and they're cheap parts and all are cheap. They're also mostly forged components and able to handle 20lbs of boost flawlessly. At least thats what the engine builder down the street told me. All his internals were stock, minus some flow benching/work on the heads and at 20PSI she's pulling 500HP and 380lb/ft on pump gas. Not bad for a 185 pound package. Stock supercharger too.

Oh well, I just thought it was very cool to see a small motor like that put out like it does.  The turbo can be bought for around $1300.  Haven't located or looked for the motor, so I don't know what they go for.
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« Reply #43 on: January 30, 2008, 11:17:41 AM »
ill buy one of those turbos tomorrow if you can get me a new one for 1300. Cobalt SS ecotec 2.0 litre I4,  $3600 crate engine.... New pulleys on the supercharger, give or take a liberal $300. Still running 91 and not needing a team of technicians to keep it tuned... not quite priceless, but still cheap enough.

I'm a fan of the T&L 408. They have a 427 Ford too.

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« Reply #44 on: January 30, 2008, 12:28:45 PM »
We had a customer looking for a v-drive so he could hook a rotory up to a jet once, the problem is the rpm range they make their power in and typically its still not enough power to turn most convetional cuts at those rpms.  I'd also be woried about getting too much weight out of the back and having the boat ride funny.


Heres my non-professional opinion.....4 bangers sound like sh*t ;D

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« Reply #45 on: January 30, 2008, 12:31:56 PM »
I share that opinion with you Josh.... However the power potential of that new chevy is undeniable. The peak torque number was actually at 3200RPMs... I am a firm believer in the SB v8 but I would really like to see someone do one of those little chevy's.

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« Reply #46 on: January 30, 2008, 12:36:04 PM »
thats cool I like thinkin outside the box.  I have no knowledge of the chevy just the prob the guy was having with the rotory(rpm wise).  Maybe if you stuck two of those 4's side by side with a cross pipe it would sound desent

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« Reply #47 on: January 30, 2008, 12:40:11 PM »
thats cool I like thinkin outside the box.  I have no knowledge of the chevy just the prob the guy was having with the rotory(rpm wise).  Maybe if you stuck two of those 4's side by side with a cross pipe it would sound desent

Josh,  It's a 3 rotor motor and I thought it sounded pretty good.  I'm still building my sbc and looking for a small boat to put it in.  :)   Greg
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« Reply #48 on: January 30, 2008, 04:08:24 PM »
The ecotec chevy sounds bitchin with a single chamber flowmaster on it. It sings... I don't know how else to describe it, doesn't sound like any other 4cylinder I've heard.

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« Reply #49 on: January 30, 2008, 04:34:43 PM »
That would probably be right for Daves JR drive, I still go the jr Intake that came out of my lil boat sittin arround somewhere not sure what i'll ever do with it.

 


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