Physically, you'd be able to bolt it on, but the bore on the 1850 is lees than TR7, so you'd end up with a step between head and block and the fire rings on the gasket would be exposed. If it ran at all, I doubt it would last long...
Braking 1972 triumph 1500 fwd,engine and box,and she'll gone.everything else available,at fair price,scale tom 07505731012.
Red convertible 1967 Triumph Herald 13/60. Good condition (not perfect..). Runs well. 20294 miles (unverif). 10 month MoT. No rot. Reluctant sale!
1970 Triumph 1300 Blue 53,000 miles. unused in dry
garage 26 years. No rust plastic still on doors
some spares, workshop manual, handbook. Offer
for good home wanted. For more information