[lts70]

I have been looking for a 400 or 455 for quite a while now with no luck in my area. I am thinking I want to look at rebuilding the 350 that came with our 1973 Ventura. I wish the motor was original to the car but it is not, I also tied to find a 1973 350 to match the car numbers better with no luck in my area.

The plans for the car is a fun street car to cruise but with enough power to have fun in. It is automatic but we plan on swamping to a 5 speed. Trying to keep the cost on the motor reasonable so that we can go the TRX 5 speed route.


The 350 motor we have is a 2 barrel 1970 255hp #11 heads 8 to 1 compression motor. The block date code is E110 and block casting number is 9799916. The #11 heads have a date code of E210 and when we checked the CC's they were at 82cc before any valve work.

I picked up a used Edelbrock performer and Qjet already. The cam is toast. I am going back and forth of how to build this motor.

Option 1
I am leaning towards milling the heads down to get the compression up and getting a good cam to support going to a 4 barrel. Hoping I could bump up into the 300hp +/- range.

Option 2
But I also love my Chevy 383, So I was looking at the Pontiac stroker kits.
Buttler performance has a 383 kit for $3,329 and a 407 kit for 2,399. Anyone know why there is a $1000 difference?

Would love to hear from you guys that have had experience building these 350 or 350 stokers. Every one around here only has experience with the 400 or 455. If I find one of those for a good deal, great. But hoping to move forward with the 350.