Edelbrock LD4B

I have to agree with crackedback. The LD4B is a good intake with decent size ports for a 318 and an improvement over a "regular" Performer intake. Ports not too big like an LD340 or other 340/360 port-sized intakes. A Performer RPM is different and would be equal or better. There was a rare D4B for the original 273 with the oddball intake bolt angle. Then the LD4B came out for the 273 and 318 when they standardized the intake bolt angle on all the small blocks, I believe in '67 or '68.

If you can get a deal on the LD4B, get it.