Holley Sniper

[Green411]

A bit of lope on a cam does sound good in the right car, but as you say a Bristol may not be the right home for such a cam! Didn't Comp cams do a ' Thumpr' series which had the lope at idle but with modern lobe design?
If I had a 318/340/360 then I'd probably have a 518 in it now, on the basis of the overdrive improving cruising more than efi would. But as discussed earlier a 383 will need an adaptor, which then opens up further debate about whether to stick with Mopar and the A518/46RH or go GM TH700R4/4L60E for it's relative availability, affordability and ease of getting replacement parts.
Lots of useful specifics in David C's post - thank you!

[Green411]

Hi all Just a quick update - well I bought the Holley Sniper, plus a drop-in fuel module with a 255 lph in-tank pump. Started work after getting home from a New Years Day local car show - where my car attracted a lot of interest.
Have taken my time and am now most of the way through the install. I have tried to disguise the update as much as possible so it looks original. Am writing about the job for Bodacious, and will post on here again after the big day. Will it still run? Ulp................

[Thor]

That's brilliant Mr. Green411, I am so looking forward to hearing how it goes.

[Green411]

Thank you Mr Thor (Is 'Mr' a suitable title for a God of war? Discuss...)
My current problem is trying to find a 1/8 NPT temp gauge sender with the same resistence as the standard one - the ECT sensor has to go in the top of the waterpump, where the temp gauge sender used to be. The only other available wet port for the gauge sender is a1/8 npt one on the front face of the pump, just below the old 1/2 NPT port. A £10 item that's driving me nuts......

[Philip]

What’s the resistance of the standard one?

[Green411]

So far as I can make out,
37*c = 400 ohms
40*c = 370 ohms
50*c = 250 ohms
60*c = 165
70*c = 121
75*c = 100
77*c = 91
80*c = 87
But these were done with hot air gun or hot water so not necessarily that accurate!

[Green411]

Well the job's finished.
After connecting 6 wires, connecting the hand-held terminal provided, entering the basic engine data, you key-off to save the data and create the base map for starting. Then key on, check the fuel pump runs and primes the system, and start. It cranked for 5 seconds or so....... then it fired cleanly. And with not one iota of drama it immediately settled into a steady fast idle…..Whew…………….
All I’ve got to do now is hope it was worth it.
THe Sniper self-learns the fuelling as you drive (timing is still from the distributor) so I'll report back once I've driven it a bit.
There'll be an article about it in a future Bodacious, I hope.
Thanks for your interest. And patience!