Guest Mike Posted January 30, 2007 Share Posted January 30, 2007 Yes, I searched. I found a few threads but I couldn't find a definitive answer. I found a GN 2004R (200R4?) transmission with a fresh stock rebuild. This one has the BRF code. Will it stand up to a 350 SBC with 450HP/450 torque at the flywheel? This is a daily driver and I have a lead foot:grin: It's listed for $1K but I can probably get if for $800 or so. Quote Link to comment Share on other sites More sharing options...
Warren Posted January 30, 2007 Share Posted January 30, 2007 In true "Stock" form, not a chance with 450 hp/tq. 350 hp/tq, maybe but with about $1200 more in hardened and billet internal parts it will take up to about twice that much. Ask Scottie-GNZ about "stock" internals. Here is a link to some "competition" parts. CK Performance Quote Link to comment Share on other sites More sharing options...
Guest Mike Posted January 30, 2007 Share Posted January 30, 2007 Hmm... That's what I was afraid of. For the $2K (plus shipping) I would have invested in this one, I would be better off ordering one built to spec. Thanks Warren!! Quote Link to comment Share on other sites More sharing options...
Warren Posted January 30, 2007 Share Posted January 30, 2007 Might add a little more to these prices, since they don't include a torque converter, which can run up to and over $500, but here's a couple of proven "bullet-proof" combinations that have been tested and actually DO hold up. Built CK 2004R's. I've done ALOT of research lately. Warren Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted January 30, 2007 Share Posted January 30, 2007 Mike, I thought you already bought a trans? Slacker. Quote Link to comment Share on other sites More sharing options...
jakeshoe Posted January 30, 2007 Share Posted January 30, 2007 Mike, A BRF trans is simply a regular 200-4R with a performance calibrated valve body, governor, and servo. For anuything voer 400 Hp you're going to use a different servo. The valve body is worth about $300-400 by itself. If you buy a BRF core be SURE you are getting the BRF valve body, otherwise you're dealing with a $75 transmission core. Nothing special. 200-4Rs are dime a dozen here for cores. There are pictures online of a BRF valve body. If you need one I have one if you decide to build a 200-4R. Chris at CKPerformance is one of the best 200-4R guys in the country. I deal with him on an almost weekly basis for speicalty transmission parts. I build the 200-4R's for performance usage and you can easily get into one $2K without a converter. I've gotten into building more and more of the 4L80E's for the heavy hitting cars that need an OD. I can do them with a full manual VB or electronic control. I have 3 in the shop now. In my experience the 200-4R is relatively safe to the 550-600 HP/TQ level when built properly an using the billet forward drum. You could go to about 750 using a billet input shaft and OD carrier but there is a point of diminishing returns. Quote Link to comment Share on other sites More sharing options...
Guest Mike Posted January 30, 2007 Share Posted January 30, 2007 WARREN... Thanks for the info. I'll check out the the link in your post. DOC... I had to buy a new heating+A/C unit for the house at the cost of $3K+. The seller of the Quadzilla offered to wait 30 days for my payment. I contacted him to finish the deal in LESS than a month only for him to tell me he said sold it without even contacting me. The bum!! JAKESHOE... I think I'll hold out for another 4L80 or 4L80E. Thanks EVERYONE!! Quote Link to comment Share on other sites More sharing options...
jakeshoe Posted January 30, 2007 Share Posted January 30, 2007 Mike, I have a 4L80E core, there is no such thing as a 4L80, they were all electronic versions. They can be converted to full manual. If you need a core or a built trans let me know. Quote Link to comment Share on other sites More sharing options...
Guest Mike Posted January 30, 2007 Share Posted January 30, 2007 Howdy Jake, I might buy that 4L80E core from you. What does it need... a complete rebuild? Where in TX are you? I'm in converse... in the NE San Antonio area. I dropped the "E" from the transmission model because I expect to do without the ECU and go full manual shift... to save $$$ (no more "E"). PM me with a price when you get the chance. Quote Link to comment Share on other sites More sharing options...
jakeshoe Posted February 1, 2007 Share Posted February 1, 2007 It was supposedly a working trans when pulled but I don't know the history of it so I would rebuild it. Do you need it with a mechanical speedo or do you want to run a converter box that converts the electronioc signal to cable drive? It's $500 for the mechanical speedo setup, or ~$300 for the converter box, or you can run an electric speedo... Quote Link to comment Share on other sites More sharing options...
Guest Mike Posted February 1, 2007 Share Posted February 1, 2007 I'll probably replace all my gauges with the old nostalgic "look". I'll opt for an electronic so it can be reprogrammed when if I change diffs or wheels. Quote Link to comment Share on other sites More sharing options...
jakeshoe Posted February 1, 2007 Share Posted February 1, 2007 Ya, On a car that originality isn't the theme the electronic speedos are the cheapest way to go. The converter box is the next cheapest. I'll run up a total and PM you. Quote Link to comment Share on other sites More sharing options...
Ledphoot Posted February 1, 2007 Share Posted February 1, 2007 I plopped a fresh 200r4 GN tranny behind a 403 Olds motor, small cam, 2200 stall with 3:73 gears in a 82 Cutlass. I made 9 passes in the 1/8 mile. Drove it to work all week. Decided to do a parking lot burn out and lost a front pump... ate itself alive.. Just like an old powerglide, you have to have the aftermarket goodies inside..... Quote Link to comment Share on other sites More sharing options...
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