73 vette tech questions Need an expert
Thread Starter
Instructor
Joined: Aug 2004
Posts: 191
Likes: 0
From: Drayton Ontario
73 vette tech questions Need an expert
I have been told that on a 73 L82 the intake was cast iron and it came with an EGR
1- Did the car come with an EGR in Canada
2- In which year did the corvette come with a cast intake and no EGR as the cast intake I have now has no EGR .
I don't have the original mtr in the car . I checked the stamping and it comes out to a 76 corvette mtr
1- Did the car come with an EGR in Canada
2- In which year did the corvette come with a cast intake and no EGR as the cast intake I have now has no EGR .
I don't have the original mtr in the car . I checked the stamping and it comes out to a 76 corvette mtr
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Please define 'expert'? Can a regular joe not answer your question?
All '73 small blocks (both L48 and L82) came with a cast iron intake manifold, casting number 3997771. Some very very late production cars (July onwards) have been seen with 340261.
Both of these manifolds have an EGR valve.
There is/was no difference between Canadian and US non-California pollution equipment, contrary to popular myth.
Post the casting number and date of your present manifold, someone (maybe even a regular joe) might know the what it's from.
All '73 small blocks (both L48 and L82) came with a cast iron intake manifold, casting number 3997771. Some very very late production cars (July onwards) have been seen with 340261.
Both of these manifolds have an EGR valve.
There is/was no difference between Canadian and US non-California pollution equipment, contrary to popular myth.
Post the casting number and date of your present manifold, someone (maybe even a regular joe) might know the what it's from.
Thread Starter
Instructor
Joined: Aug 2004
Posts: 191
Likes: 0
From: Drayton Ontario
Originally Posted by Mike Ward
Please define 'expert'? Can a regular joe not answer your question?
All '73 small blocks (both L48 and L82) came with a cast iron intake manifold, casting number 3997771. Some very very late production cars (July onwards) have been seen with 340261.
Both of these manifolds have an EGR valve.
There is/was no difference between Canadian and US non-California pollution equipment, contrary to popular myth.
Post the casting number and date of your present manifold, someone (maybe even a regular joe) might know the what it's from.
All '73 small blocks (both L48 and L82) came with a cast iron intake manifold, casting number 3997771. Some very very late production cars (July onwards) have been seen with 340261.
Both of these manifolds have an EGR valve.
There is/was no difference between Canadian and US non-California pollution equipment, contrary to popular myth.
Post the casting number and date of your present manifold, someone (maybe even a regular joe) might know the what it's from.
Racer
Joined: Dec 2004
Posts: 379
Likes: 0
From: Fairfield Texas
Originally Posted by Mike Ward
340250 (and 340249) is for 75-77 L48 and L82 engines , also for '78 L48. 
and it would have the provision for EGR.
Melting Slicks
Joined: Dec 2000
Posts: 3,363
Likes: 303
From: Lansdale 19446 PA
2024 C3 of the Year Finalist- Unmodified
St. Jude Donor '10-'11, '15, '19
Originally Posted by chevylit
I think the number for the above listed engines would be 346249
and it would have the provision for EGR.
and it would have the provision for EGR.
346249 is what I have on my 76 and it is all original with EGR.
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