oK I know that this question has been asked before but I cant see to find the exact answer I'm looking for in the threads. My compression on 3 and 4 is low low. I need a reworked head and/or piston rings. Anyhow, I found a good price on an SH head and block along with many other new parts included however it is from an SH. I have a 2001 Base. WIll the head directly fit on my base and will the block bolt right up to my base tranny? From what I understand the head will work fine but I am unclear as to if the tranny will bolt right onto the new SH block being that my tranny is non ATTS. WIll it work with or without mods, and if so, what mods need to be done in order to bolt it up together? thanks for looking.

ATTS is in the tranny and helps with engine output to dampen/ increase torque in turns. from what I understand, its not a limited slip differential. I think the only difference between the SH and Base is spoiler, rims, interior, and ATTS Tranny. I could be wrong, but in my opinion, I would say they would. Don't hold it against me if I'm wrong, wait for another opinion, but if I had to say so, yeah, they'd fit. Unless you have the money to do the complete swap, then do so. If your short on cash, the motor should just fit in and you'd be without ATTs and might have sensor adjustments.

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Well I have heard the because of the missing ATTS on my tranny, the bolt pattern is not exactly the same or that it doesnt bolt up directly somehow. I guess I just want to know from anyone with experience doing this exact swap, what modifications I would need to do to get them to fit.

I really don't think you should get the SH engine + trans to swap into you base prelude. It seems to be a very undesirable swap. I know at the least you'll need the SH axles but the swap might throw you some more problems as well.

I got these from a google search if you care to read them:
SH Engine in a Base model - It's a no go
SH motor to base model swap, atts HELP! - Honda Prelude Forum : Honda Prelude Forums

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the block will not mount on the base tranny and to get a sh tranny to work will require fabrication.

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http://www.preludezone.com/product-r...hift-knob.html

I just put a H23a vtec in my SH prelude, when I took the atts off the the old motor I saw that the bolt patterns was different for the halfshaft on your base because of the atts. The tranny will go on but the halfshaft will not bolt up to anything.. Do yourself a favor and get a base motor for less issues...

thanks guys i guess im going with a low mileage JDM base motor. found one for 1250 shipped. supposed to have less than 50k. You guys know anywhere to get a good engine cheaper? and what about this... i found a remanufactured engine with 100,000 mile 5 year warranty for about $2200 shipped. what would you go with if it was your money?

Any good places to get a great price on low mileage or remanufactured engine??

Specializing in JDM-USDM Engines & Parts...hmotorsonline.com
Ive never personally used them but I have heard nothing but good things about them.

Well I just ordered from NaganoUSA aka Nagano INC. $1250 shipped. Compression tested under 50k 3 month warranty. sounds pretty good. Should be here MOnday!! I may start a swap thread with pictures. once I begin.

What kinda mods should I do to it before dropping it in?

not really mods, more preventative maintenance, but i would do all the major seals, timing belt, tensioners, and gaskets.

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1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!
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