I think only 20 hp or so. The same HCI means you are running 302 parts. If you run 302 parts in a 351, it will run like a 302.
I assume you mean a '93 HO 5.0 engine...?! The 5.0 has 9.0 to 1 compression with 63cc heads. The '74 351 pistons have a huge dish. That engine is made for 8.2 to 1 compression with 60cc heads. So, if you have stock pistons in both engines, and heads with the same chamber size, the comparison will not include equal compression ratios.
I assume you mean a '93 HO 5.0 engine...?! The 5.0 has 9.0 to 1 compression with 63cc heads. The '74 351 pistons have a huge dish. That engine is made for 8.2 to 1 compression with 60cc heads. So, if you have stock pistons in both engines, and heads with the same chamber size, the comparison will not include equal compression ratios.
Also the Intake will not fit from a to a 5, taller deck means wider valley. Heads yes, cam maybe yes, but not lower intake. Like someone said, heads intake will cost you much power, not even worth the trouble of the swap.
You could probably spend all the $ for the 351 and swap parts on better H/C/I for the 302 see higher net increase...
You could probably spend all the $ for the 351 and swap parts on better H/C/I for the 302 see higher net increase...
If you want 400/400 @ the wheels OR More you would need more than 450hp @ the crank. I don't see that with your heads.
Heres a link to Edelbrock and their packages. They got 451hp and 433tq but they had to step up on the heads. I didn't look at the cam specs. Their dyno chart does not seem to come up though. This still wouldn't give you 400 in torque @ the wheels. I have never heard of these heads either, RPM XT? They must be a ported version of the RPM's.
Victor Jr heads will make the power you are after, I just don't see it happening with your heads at all.
http://www.edelbrock.com/automotive_new/mc/power_package/tek_ford.shtml
Heres a link to Edelbrock and their packages. They got 451hp and 433tq but they had to step up on the heads. I didn't look at the cam specs. Their dyno chart does not seem to come up though. This still wouldn't give you 400 in torque @ the wheels. I have never heard of these heads either, RPM XT? They must be a ported version of the RPM's.
Victor Jr heads will make the power you are after, I just don't see it happening with your heads at all.
http://www.edelbrock.com/automotive_new/mc/power_package/tek_ford.shtml
This is a great cam. Duration @.050 is 236/246 with .520"/.538" lift. They installed it with a 2 deg retard in the 351 HO crate engine with the J302 alum heads they made 385hp, 377ft lbs. http://www.mustangandfords.com/techarticles/28939_351_ho_svo_crate_engine/index.html
This cam is 226deg@.050 with .512" lift but he does not have a late model roller block. The Z303 is 228deg@.050 and .552" Lift.
Anyway John I don't think you will make 450+ hp with any of these cams and your heads.
But what do I know anyway??