If for some reason the original heads are not usable I'm 100% upgrading, I wouldn't spend a penny on buying more tbi heads. I'm also rethinking my budget some, I've decided to sell my daily because the cost to fun ratio just isn't there. I can get trick flow heads for what the Q60 costs per month lmao. It's stupid fast but doesn't have the soul older vehicles do, and I wasn't the one who made it fast so I don't have any connection to it.
I ordered the ebl this morning so I'm commited to that. It's 1/4 the price I'm used to for tuning and the benefits seem immense. Tomorrow the shop will have some estimates for me and I'll be able to go from there regarding strokers and all that.
I'm in the process of building the Blue Print 377 (4.000" bore X 3.75" stroke) short block, with the Comp Cams XE282HR (or equivalent specs) that came with it.
I'm using the Summit Racing TBI heads (giving me 10.3:1 compression), a 46mm bored TB and have the EBL (had it for over 4 years now). According to Blue Print their short block will make 436 HP/443Ft Lbs with their heads, 1.6 rockers, and a 750CFM carb so, I'm not expecting that much but, will have fun tuning it and may go to a 50mm TB from a 7.4, who knows?
Motor Trend put this cam in an HT383 and came up with these numbers:
Peak HP: 455.3 @ 5,600
Peak Torque: 493.0 @ 4,200
Average HP 2,500-4,800: 327.4
Average Torque 2,500-4,800: 467.7
Average HP 4,000-5,700: 427.4
Average Torque 4,000-5,700: 465.3
Torque at 2,500: 426.3
Enjoy your EBL and build!