rebelrouser wrote: ↑Sun Apr 25, 2021 8:13 pm
I am building an engine right now for a street rod with the same basic goal as you want.
Now first lets just talk like I would to one of my customers. If you want a muscle car engine streetable, about ONE HP per cubic inch is average, decent idle and compression to run pump gas.
I am not Grumpy Jenkins so most of my mild race engines make 1.5 to 1.6 HP per cubic inch. That is just how it is at my shop. Make fun if you want, I am being honest.
So to make your car run in the 11.00 zone, I would say you need around 450 HP'
350 HP per cubic inch = 1.28
383 HP per cubic inch = 1.17
So a 383 is much easier to make your goal. My customer brought me a 350 4 bolt main block we got a flat top 383 kit, compression came in around 9.75 to one. Edelbrock E-Tec cylinder heads. Cam is 112 center line installed at 107, 242 duration, .594 hydraulic roller. I might have picked a little different cam, Edelbrock dual plane intake and 800 AVS carb, but he got a good deal on these parts, it is what it is.
Performance trends says it should make around 475 HP and 490 ft lbs and have 11 inches of vacuum, a rough idle but not that bad. Soon as he gets the pulleys and belt drive will put it on the dyno.
If you are wanting to use OEM Iron heads, I just don't think you will find a set that flows enough. If you want to port them maybe, if you want to spend the money. If you want the stock look , paint the heads, few people will know the difference.