Hello all. I should have done this ages ago - but didn't want to put you all through the rigmarole of saying welcome. Instead, I dived in with a bunch of questions and felt welcomed by the friendly and helpful replies I've been getting. The welcoming part is done!
So, I'm going to use this intro to ask more questions - general ones from someone the other side of the pond who is struggling with translations. Just stuff I've not encountered that you guys have been doing for years it seems.
What's with the X/Y for drops? My only guess is that it's how much lowered front and back but the photos I see don't really support that assumption. What's a C Notch? Is that where the rear chassis rails are cut and shifted to clear the axle on bump? And what are 'dropped spindles'?
I see a lot about 'camming'. I don't have the cam timings for my L31 so don't have anything to compare what I'm seeing with. Usually (with cars at least) the aim with a different cam is to push the torque curve up the rpm range and thus gain power. Same here? But isn't that at odds with the low end torque required for towing and stuff like that? Eg, I saw camming being discussed for a 'rock crawler' and my guess is that low end is everything for that. Which way does camming go with you guys? Or is camming done both ways - sometimes for low end, sometimes for top end?
And the way that you specify cam timings is different. The 'lift' and 'lobe angle' I get. But not the duration figures. Are they being quoted at a specified lift? And if so, what's the standard lift figure used. I don't need to know this stuff but as I'm interested.....
What's brought me here is the recent purchase of a 1999 Suburban C2500 with the 5.7l Vortec. I'l post a few photos at the end so you can see for yourself what I have. It's a very low mileage truck (41,000 miles) and rust free (apart from slight surface rust on exposed frame parts and exhaust tips). The interior is pretty tidy too but some of the dash needs refastening. It was a surprise to find one in the UK at all let alone this one.
It was converted early on to run on LPG (propane) as UK fuel prices would make your eyes bleed looking at them and the LPG is about half the price of gasoline. There's a few niggling problems I'm trying to get on top of - hence threads elsewhere - and a few more that I'll ask about in due course. I've only driven it about 100miles (then UK went into C-19 lockdown - oh joy) but really looking forward to it being properly sorted and getting on the road with it.
Anyway, enough of an intro I think. Thanks for the welcoming help so far - it really is appreciated - and have a look at my truck and feel free to comment as you see fit. The intention is for it to be my daily road car so only 2WD and road orientated wheel/tyres is perfect for me. It is now as in the street pic - bull bar removed and with reg plate on bumper.
Cheers!
So, I'm going to use this intro to ask more questions - general ones from someone the other side of the pond who is struggling with translations. Just stuff I've not encountered that you guys have been doing for years it seems.
What's with the X/Y for drops? My only guess is that it's how much lowered front and back but the photos I see don't really support that assumption. What's a C Notch? Is that where the rear chassis rails are cut and shifted to clear the axle on bump? And what are 'dropped spindles'?
I see a lot about 'camming'. I don't have the cam timings for my L31 so don't have anything to compare what I'm seeing with. Usually (with cars at least) the aim with a different cam is to push the torque curve up the rpm range and thus gain power. Same here? But isn't that at odds with the low end torque required for towing and stuff like that? Eg, I saw camming being discussed for a 'rock crawler' and my guess is that low end is everything for that. Which way does camming go with you guys? Or is camming done both ways - sometimes for low end, sometimes for top end?
And the way that you specify cam timings is different. The 'lift' and 'lobe angle' I get. But not the duration figures. Are they being quoted at a specified lift? And if so, what's the standard lift figure used. I don't need to know this stuff but as I'm interested.....
What's brought me here is the recent purchase of a 1999 Suburban C2500 with the 5.7l Vortec. I'l post a few photos at the end so you can see for yourself what I have. It's a very low mileage truck (41,000 miles) and rust free (apart from slight surface rust on exposed frame parts and exhaust tips). The interior is pretty tidy too but some of the dash needs refastening. It was a surprise to find one in the UK at all let alone this one.
It was converted early on to run on LPG (propane) as UK fuel prices would make your eyes bleed looking at them and the LPG is about half the price of gasoline. There's a few niggling problems I'm trying to get on top of - hence threads elsewhere - and a few more that I'll ask about in due course. I've only driven it about 100miles (then UK went into C-19 lockdown - oh joy) but really looking forward to it being properly sorted and getting on the road with it.
Anyway, enough of an intro I think. Thanks for the welcoming help so far - it really is appreciated - and have a look at my truck and feel free to comment as you see fit. The intention is for it to be my daily road car so only 2WD and road orientated wheel/tyres is perfect for me. It is now as in the street pic - bull bar removed and with reg plate on bumper.
Cheers!
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