Author Topic: 72 LHD Federal TC on UK ebay  (Read 297 times)

0 Members and 1 Guest are viewing this topic.

Offline SilverBeast

  • Hero Member
  • *****
  • Joined: Aug 2019
  • Location: Yeadon,West Yorkshire,UK
  • Posts: 696
  • 1974 Twin Cam Special
72 LHD Federal TC on UK ebay
« on: Monday,September 28, 2020, 11:43:00 AM »

Offline Sparkrite

  • Sr. Member
  • ****
  • Joined: Dec 2019
  • Location: London UK
  • Posts: 253
Re: 72 LHD Federal TC on UK ebay
« Reply #1 on: Monday,September 28, 2020, 12:17:23 PM »
This car has been for sale a number of times before over 2 years ago,but without an engine. Poor description and severe lack of photos is just not good enough. How can the seller think this adequate. Does anyone know if this is the correct twin cam engine for this car, and what obvious parts are missing. I can see no luggage tray,door card,front indicator, air filters,wheel centres,alternator ?

Offline 4129R

  • Super Member
  • *******
  • Joined: May 2014
  • Location: Norfolk, United Kingdom, not far from Hethel the home of Lotus.
  • Posts: 2,547
Re: 72 LHD Federal TC on UK ebay
« Reply #2 on: Tuesday,September 29, 2020, 01:29:33 AM »
and what obvious parts are missing. I can see no luggage tray,door card,front indicator, air filters,wheel centres,alternator ?

servo, heater blower, ashtray, electric window switch, engine cover grill ...................

£5,000 tops in my opinion.

Offline Sparkrite

  • Sr. Member
  • ****
  • Joined: Dec 2019
  • Location: London UK
  • Posts: 253
Re: 72 LHD Federal TC on UK ebay
« Reply #3 on: Tuesday,September 29, 2020, 03:42:35 AM »
How did I not notice the missing ashtray. What is meant by twin cam tall block engine.

Offline 4129R

  • Super Member
  • *******
  • Joined: May 2014
  • Location: Norfolk, United Kingdom, not far from Hethel the home of Lotus.
  • Posts: 2,547
Re: 72 LHD Federal TC on UK ebay
« Reply #4 on: Tuesday,September 29, 2020, 08:07:37 AM »
What is meant by twin cam tall block engine.
So a 1650cc tall block engine should have about 6% more torque than a standard twin cam all other things being equal. But by putting a standard twin cam head on a tall block with appropriate nominal flat top (valve reliefs only) pistons you will increase compression by a considerable amount (you'd have to calculate it, but is should be around 1/2 a point or more) and that increased compression will add torque. Cam specs and carb jetting also come into play, and there is generally a benefit in the longer rod used with the longer stroke crank.

A Sprint spec engine makes something like 113lbs/ft max. My 1725 crossflow crank standard height twin cam with 10.3/1 compression and special cams/porting made 148lbs/ft on a dyno. So I figure the displacement provided about an 11% increase, with the rest of the 30% increase coming from the other factors.