Got a 350 block been sitting a while I would like a strong street engine, pump gas, not a daily driver just a weekend cruiser. I got the block for cheap it had been sitting for a long time.

1974 350 block going to have to go .030 over
stock bottom end (rods and crank)
hp345np-30 pistons (9.97 with a 58cc head)
or
hp423ncp-30 pistons(9.45 with a 58cc)
.040 head gaskets
#416 heads
XE262 cam
Performer Rpm Intake
using CC Carb setup
3.42 or 3.73's

I tried using the DCR calculator and its not coming out right.
I dont know which of the pistons would give me a better CR to run on 93 at the most.
I dont want a HP monster just enough so I can keep up with the cars of today.

Yes I've searched just so many people have different answers to every little thing

 

I'd go with the larger dish. I assume you're going to zero-deck the block.

What are you going to do to the heads?

You'll be using the spreadbore version of the RPM, right?

 

Im going to port those out and put the 1.94's in.
zero deck the block
squarebore if they make one if not ill have to find one, Ive got a regular performer in the box but from what I've read might as well keep the LG4 intake since its about the same(as the performer)

 

Packmule,
LG4 may not be exactly the same as a performer but it's pretty darn close. Personally, the Rochester is an incredible carb IF you take a few hours to read a book or two and learn the proper way to install, adjust, & maintain it. "IMPO" it has much beter idle characteristics than the run of the mill aftermarket "Super Carb". And requires less "tinkering" once it's right. Your money could possibly be spend elsewhere and get REAL performance gains (I.E. Exhaust) for less money than the EdelBrock and an aftermarket square bore.

Just my
kboehringer

 

i totally agree. if you dont want to mess with the q jet too much yourself, jet performance's carb shop can get it pretty damn close initially for you to fine tune later. throttle shaft rebuld, needle and seat flow increase, filter update, replacement of the tps sensor m/c solenoid and air bleed setting. give em a call.

 

No im keeping the CC carb i was talking about the intake only. I had a 73 el camino that had one and even after it was rebuilt it was junk. too young and stupid to do it myself. but this one is good it starts right up and runs good, just the motor leaks too much, and not keeping the 305 in it. Going to check out the carb when it comes off make sure its all ready for the next engine

 

If you're going to use the CC q-jet, you need a spreadbore intake - that's why I said what I said in my first reply. Squarebore intake would require an adapter - not the best way to go. So, get the spreadbore version of the Performer RPM intake.