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Here it is making some pretty snazzy sounds. (Tom's Roadster, I have no video of Marc's truck on the rollers, that he hasn't already posted ) http://s240.photobucket.com/user/nexxuss...fe7693.mp4.html
My, what a steep learning curve. Erik II#5155
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And contrasting that 'snazzy sound' check out my old 292 huffin' away last month (see my Photobucket...Dyno Runs Album). It didn't post big #s, but it ran up smooth and didn't blow up! I'll have to apologize for the photog work. It was a last second deal with the camera having to be tossed down from the front seat.
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Put 3300 miles on the truck - Calgary, Reno (hot august nights), Bonneville (Sausage on the Salt), Calgary.
It likes to cruise at 85 (2500 rpm) got about 16 mpg with the low reverse band draging in the transmission. Once the turbo was replaced the drive from Reno to Wendover was quick...
Wounded/consumed parts
turbo (something broke loose and went through the compressor)- not a cheap fix..
2 gallons of coolant..
low/reverse band and forward planetary in the 4l80...
Cruise control worked well unless it yanked the throttle to far and the turbo spooled hard - then it freaked out.. close open close ..
Air conditioning worked well enough not to be un-comfortable.
Last edited by efi-diy; 08/20/13 01:49 AM.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
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Put 800 + miles on the '53 Chevy with 270 GMC to Bonneville and back. 70-80 mph 14 mpg. Had to tinker with the throttle cable on the way out because we had messed with it while thinking of putting the TBI/ Megasquirt on. I think the MS will improve the milage. No cruse control except for the hand throttle, no AC, reverse is fine and coolant OK. Hauled Wood from Tahoe today. No radiator in the bed.
"I wonder if God created man because he was disappointed in the monkey?" Mark Twain
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Looks like all the money Marc saved on doing the 4200 swap he is having to spend on fixing it every time he takes it on a trip. Ready to swap back to a 292 yet Marc.
Class III CNC Machinist/Programmer
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Looks like all the money Marc saved on doing the 4200 swap he is having to spend on fixing it every time he takes it on a trip. Ready to swap back to a 292 yet Marc. ahhhhhh nope - that turbo never gave a hint of problems - someone suggested that a piece of the k&n broke off and went through the turbo. If anything I'd put a ported head late 4200 in with a header and good exhaust.. The no reverse is weird - not even the trans shop I consulted had heard of a cocked band before and they have been around since 1970.... I call these teething problems, like anything else the further you go away from stock the more issues will crop up.. Annoyed - a bit - fead up to point of "enough" no. Stubborn possibly.
Last edited by efi-diy; 08/21/13 12:47 AM.
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
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Looks like all the money Marc saved on doing the 4200 swap he is having to spend on fixing it every time he takes it on a trip. I think Marc spent way more money into that 4200 swap than his expensively built 292 ever cost, no? Keep plugging away Marc! MBHD
12 port SDS EFI
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Our speedometer isn't fully calibrated, so the best I can give is 3000 ish miles, with the only casualty being one of the AC hard pipes (one of the reasons we went to Reno was to get that fixed). We got between 18 and 19 MPG @ 85, with the odometer being off, that calculates out to near 21 MPG. No carnage with the trans, we could haul a little bit of wood under the bed cover, if it was thin enough.
My, what a steep learning curve. Erik II#5155
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I think you guys are pioneers out there cruising the West in your high tech conestogas. When I was a kid we took many trips from Texas to California and I don't remember any that didn't include a fairly major breakdown,some really major. A 3,000 mile trip in a new build with only minor problems is amazing. I'll haul the wood you guys haul ass!
"I wonder if God created man because he was disappointed in the monkey?" Mark Twain
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At least the transmission fix was inexpensive.. $36 for a new band just a lot of hours
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
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At least the transmission fix was inexpensive.. $36 for a new band just a lot of hours
What happened to the band? MBHD
12 port SDS EFI
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The band cocked a 1/4" sideways on the drum - wore the friction material and would not engage. New band, slightly longer pin - good to go.
The 4l80 works the convertor harder than the 4l60 to get moving... kinda miss that low 1st gear...
51 GMC 4.2 turbo Can't solved today's problems using the same technology/thinking that created them
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