70 LT1 engine suffix

[Robert M.]

What is the difference between a CTU and CTK suffix on a 1970 LT1? Did it change with date of production or assembly?

[Tom H.]

Re: 70 LT1 engine suffix

CTK late release to replace CTU. After 3/24/70.

[Michael F.]

Re: 70 LT1 engine suffix

my original engine may build car is a CTU.

[Tom H.]

Re: 70 LT1 engine suffix

my original engine may build car is a CTU.

What is engine cast and assembly date ?

[Ralph S.]

Re: 70 LT1 engine suffix

I think the CTK has the smaller oil pan so they could add power steering

[Terry M.]

Re: 70 LT1 engine suffix

What is the difference between a CTU and CTK suffix on a 1970 LT1? Did it change with date of production or assembly?

Ralph & Tom have it right. So does the TIM&JG as well as an ancient (about 1993 or 1994) story in The Restorer.

[Robert M.]

Re: 70 LT1 engine suffix

I don't know the cast or assembly date but the VIN is 16051. Does the previous comment mean the oil capacity is five qts. with the filter instead of six?

[Ralph S.]

Re: 70 LT1 engine suffix

CTK 5 qts with filter