i caught a rumor about someone making an adapter to put one of chevy's 4cyl/6cyl automatic trannies on a K-series.

anybody have info regarding this? which tranny are they using?

 

figured it out. 4T65-E.

now i need to know would the goto guy for gearing would be. anyone friends with nelson hoyos???

 

what's so great about an automatic transmission for a K-series when you have oem close ratio 6speeds?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense &raquo;</TD></TR><TR><TD CLASS="quote">what's so great about an automatic transmission for a K-series when you have oem close ratio 6speeds?</TD></TR></TABLE>

well, the cobalts are running in the 7's with pretty good reliability using this tranny. those close ratio stock trannies don't hold up to 700-800hp reliably and the g-force/liberty trannies start at $16,000.

this year has been a disaster for us due to tranny failure in our H22civic. now that we are building a full racecar we want it to be as bulletproof as possble. of course on a non sponcered budget.

 

sounds like the most expensive setup ever.

 

the ones in the ecotecs YES, but they handle 1200+hp for most of the season.

the tranny can be had for $200-$400. estimated 5K to build it with torque converter for 800Hp. Now if custom gear sets are needed which has yet to be determined, then i'll be scared about it being to expensive.

 

Y K-series YYYYY

 

good luck in getting custom gears. That will be wild.

 

this year has been a disaster for us due to tranny failure in our H22civic.


I AGREE WITH THE ABOOVE STATEMENT!!!!

 

why??? cause he couldnt do it with the h series! llol

 

contact earl or mike laskey. they are using the gm auto in their new race car with an f20c

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jared &raquo;</TD></TR><TR><TD CLASS="quote">contact earl or mike laskey. they are using the gm auto in their new race car with an f20c</TD></TR></TABLE>


cool

 

the f20c would use the RWD GM tranny turbo400/4L80 ect. the 4T65-E is a FWD tranny.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trickeng &raquo;</TD></TR><TR><TD CLASS="quote">the f20c would use the RWD GM tranny turbo400/4L80 ect. the 4T65-E is a FWD tranny. </TD></TR></TABLE>

they could have mounted it transversly *shrugs

 

hmmmmmm. yup. your right.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trickeng &raquo;</TD></TR><TR><TD CLASS="quote">the f20c would use the RWD GM tranny turbo400/4L80 ect. the 4T65-E is a FWD tranny. </TD></TR></TABLE>



Everything has been 100 percent custom made. It is a f20c engine fwd with a 4t65e transmission. Making the adapter plate is the easy part There are lots lots more issues with making this setup work, let alone even buying the transmission from GM racing. You can not even buy the same transmission case as what those 7 sec. GM cars run. There also no gear ratios available. It is a 4 speed trans., but the 4th is overdrive so you only use 3 gears.

 

So the 4T65-E i found at the boneyard to use for fitment won't work??? or are the case mods for the trans brake?

what is GM racing getting for there prep'ed tranny??

Thanks for the info.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by trickeng &raquo;</TD></TR><TR><TD CLASS="quote">So the 4T65-E i found at the boneyard to use for fitment won't work??? or are the case mods for the trans brake?

what is GM racing getting for there prep'ed tranny??

Thanks for the info.</TD></TR></TABLE>

It will work for mock up. They come in the 6 and 8 cycl. vehicles. I think the starter area might be a tad different on the 8 cycl. version. Their own race version of the case comes thicker inside to stop it from breaking. They claim 6k gets you the transmission. It will take you forever to get one though, they are more concerned in keeping their own racers stocked then selling them from what I have seen.

 

Wasn't hard to get one..........but it does help that I've been helping on GM V6 FWD's

So, how you overcoming the electronics to control it?


Modified by Mista Bone at 3:37 AM 10/21/2006

 

why couldn't you use manual valve bodies.

 

It just needs power to make it shift.

 

why not change the thread title and start a more techinical thread. Maybe with more info on the setups and how they are controlled and such.

 

You can get the race built hydramatic transmission from GM for $6000, thats a steal for a auto tranny that will support that kind of power for over a season.

Built auto&gt; close ratio 6 speed ANY DAY for drag racing.