Re: Modular ford VS LS1 Gm powerplants. Well first some of the advantages they do have over our motors. 1: no noise at idle and smoother running engine. 2: better gas milage in stock trim and modified trim. 3: less maintanance when it comes to the valve train. 4: Less compression stock which enables better boosting. 5: Overhead cam ability which enables high RPMs.
Advantages of LS1 motor 1: Cubic inches over fords modular 346 to 281. 2: more compression to help the NA guys (like me) 3: Great flowing heads and intake, unlike a mod motor an ls1s intake flows well. 4: Great bottom end that is probably stronger then your adverage 281 Gt motor (unless compared with cobra motor) 5: more aftermarket and cheaper parts.
These are some things i can think of right off hand, although i must say a 4 valve head on a cobra motor makes exceptional flow over an LS1 head. I have seen 320 CFM out of a 4 valve head, and i know that it is capable of more. This is a limiting factor with LS1s, even know they flow almost as well with half the valves i dout that they could ever flow as well as a 4 valve head. Anyone have any ideas yet?