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Old 03-10-2011, 02:00 PM   #1
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Default SOHC to a 350 small block

so im working on swapping out my stock prelude engine and putting a 350 small block out of a 1972 pontiac lemans in it..its ganna be a bitch but when its finished its ganna be ****ing crazy...Let me know what u think
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Old 03-10-2011, 02:28 PM   #2
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Default Re: SOHC to a 350 small block

We think you should post pics or else don't make a thread
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Old 03-10-2011, 06:53 PM   #3
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Default Re: SOHC to a 350 small block

i will dont worry
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Old 03-11-2011, 08:22 AM   #4
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Default Re: SOHC to a 350 small block

Yeah, a reverse rotation trans, custom rear end and the H22a mounted longitudinal would be much cooler than some outdated super heavy engine.
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Old 03-11-2011, 08:23 AM   #5
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Default Re: SOHC to a 350 small block

lol...im definenatly ganna make it rwd..
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Old 03-11-2011, 08:25 AM   #6
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Default Re: SOHC to a 350 small block

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Yeah, a reverse rotation trans, custom rear end and the H22a mounted longitudinal would be much cooler than some outdated super heavy engine.
I might just go alnog with your idea instaed i never really thought of the weight..
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Old 03-11-2011, 08:31 AM   #7
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Default Re: SOHC to a 350 small block

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I might just go alnog with your idea instaed i never really thought of the weight..
IMO stick with the V8 idea, but use something more modern like and LS. The extra weight means nothing compared to all the extra torque over an H22.
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Old 03-11-2011, 08:37 AM   #8
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Default Re: SOHC to a 350 small block

Damn idk wat to do now cause they both sound like good ideas...although it would be hella sick rollin up to a race and having all the people thinkin its ganna be a piece of crap little honda then when get on the throttle it sounds like a bad *** muscle car.
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Old 03-11-2011, 09:15 AM   #9
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Default Re: SOHC to a 350 small block

damn that **** is crazy...
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Old 03-11-2011, 10:26 AM   #10
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Default Re: SOHC to a 350 small block

Meh, not a drag fan at all really, just thought it would be cool to keep true to the original performance engine that came in the car. Still waiting for someone to do it without using a solid rear end though, maybe adapting the S2K rear with some of the preludes front suspension pieces modified and put in the rear to accept CV axles. The 6 speed trans is already in existence, just need someone with the cash that I wish I had to do it with a true IRS.
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Old 03-12-2011, 09:53 AM   #11
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Default Re: SOHC to a 350 small block

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Originally Posted by parkercustoms View Post
Damn idk wat to do now cause they both sound like good ideas...although it would be hella sick rollin up to a race and having all the people thinkin its ganna be a piece of crap little honda then when get on the throttle it sounds like a bad *** muscle car.
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Old 03-12-2011, 11:55 AM   #12
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Default Re: SOHC to a 350 small block

i think im ganna just stick with the original idea that i had and see where it takes me
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Old 03-14-2011, 03:51 AM   #13
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Default Re: SOHC to a 350 small block

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Originally Posted by parkercustoms View Post
so im working on swapping out my stock prelude engine and putting a 350 small block out of a 1972 pontiac lemans in it..its ganna be a bitch but when its finished its ganna be ****ing crazy...Let me know what u think
Click the image to open in full size.
If this engine you speak of is original to the LeMans, it is a 350 Pontiac, in which case there is no BIG or SMALL block. There are the small journal cars 326/350/400 and the large journal 421/428/455. And two low deck engines, the 265 and 301.
If you're going to go through the trouble of installing a Indian in your car, why not use a 455. All Ponchos externally, excluding the aforementioned 265/301, physically the same external size.
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Old 03-14-2011, 06:44 PM   #14
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Default Re: SOHC to a 350 small block

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Originally Posted by parkercustoms View Post
i think im ganna just stick with the original idea that i had and see where it takes me
I found this link while trying to find the dimensional size of a 350. I do know that right of the box it's difficult to make a b16 fit in 3rd gens due to the low hood clearance. Clearance issues with a 350 in a Prelude will only come naturally. Check it here http://www.enginefactory.com/chevdimensions.htm

Also of note is the sheer weight of these motors. According to that url, you're looking at at least a quarter-ton of motor going there without even considering the transmission, along with all the related suspension and drivetrain modifications. An LS-based motor would be preferable at this point as it utilizes lighter materials. Do you want this car to handle or do you want it to go straight really fast? I don't see how you could have both with this swap.

All pessimism aside, I'm excited to see what can be gleaned from this project as it is truly something unique. Someone's gotta do it right?

We're all counting on you
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Old 03-15-2011, 11:12 AM   #15
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Default Re: SOHC to a 350 small block

There has been someone that already started/did a LS Swap in a Prelude years ago. Not sure if he finished it; I'm thinking he sold it before he finished it. I believe his user name was RocketMan or something to that effect. I might even still have a link to his thread. I'd have to find it though.
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Old 03-15-2011, 06:08 PM   #16
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Default Re: SOHC to a 350 small block

i would like to have it handle good too but also go really fast...but the wieght is defenitlly ganna be a big problem
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Old 03-16-2011, 09:57 AM   #17
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Default Re: SOHC to a 350 small block

http://www.youtube.com/watch?v=Mup9BaOQWgc
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Old 03-16-2011, 02:07 PM   #18
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Default Re: SOHC to a 350 small block

I have a feeling this will never happen due to the maker of the thread "considering" different ideas.

But I hope its true and more power to ya man!!!
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Old 03-17-2011, 07:50 AM   #19
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Default Re: SOHC to a 350 small block

damn an ls is starting to sound better and better
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