sbc 400 vs 350 vortech

[78 Chevyrado]

Originally Posted by bigtruck81

30 year old carbureted small block vs 10 year old EFI small block with superior heads, roller valvetrain, and probably better gearing. keep toying with him, he'll quickly show you whose boss. 400s are great engines dont get me wrong, but if you want to throw out the "there's no replacement for displacement" card, do yourself a favor and only pick on guys with carbed trucks with flat tappet cams. you're just setting yourself up to get humiliated.

I dunno dude, if his has been rebuilt, forget the vortec. My '73 400 only had a flat tappet cam, performer intake and carb and made around 300hp and 413ft-lbs. with no headers.Vortecs didn't make that. I think the extra 50 cubes can make up for the vortec heads on a 350. Mainly if he got rid of the smog cam, he's way ahead. Heads and roller cams don't matter much if they're just the OE junk anyway.

[pokethesmot]

Originally Posted by 78 Chevyrado

I dunno dude, if his has been rebuilt, forget the vortec. My '73 400 only had a flat tappet cam, performer intake and carb and made around 300hp and 413ft-lbs. with no headers.Vortecs didn't make that. I think the extra 50 cubes can make up for the vortec heads on a 350. Mainly if he got rid of the smog cam, he's way ahead. Heads and roller cams don't matter much if they're just the OE junk anyway.

thanks for the confidence talk about the 400 sbc lol

[Damien]

The 400 may have the 350 beat in the power department, but the newer truck most likely has gearing on his side, if not from the axle ratios, he has a 4l60 with a deeper first gear.