my big Mouth!!! i got problems now

[getfreshco]

no i just figured it would be a lot more for a 350 (becasue there so damn powerful!...is it worth it?)

[getfreshco]

another question....... two bolt main or four bolt main....i have no idea what this means........ is it self explainatory?.......also roller or non roller cam? ....for a 350 or 305 information on both would be helpful!

[silicon212]

Originally Posted by getfreshco

another question....... two bolt main or four bolt main....i have no idea what this means........ is it self explainatory?.......also roller or non roller cam? ....for a 350 or 305 information on both would be helpful!

Two bolt main caps are fine for your car. The difference is the middle 3 main bearing caps generally have two long bolts attaching them, one on either side of the crank. The 4-bolt engine adds a shorter bolt outboard of each long bolt. On either engine, the front and rear main caps attach with two bolts.

[Blue Bowtie]

What he said.

Two bolt main caps are usually not the limiting factor in an SBC street engine. 2-bolt blocks will typically handle 450 HP, whereas the rods (actually, rod bolts) more frequently let go at lower power levels and the associated RPM.

Your engine is currently equipped with a roller cam, and you should probably try to install a replacement that is the same design, mostly for longevity, and partly for the slightly lower internal friction.

A 350 may get about 1 MPG less in city driving, and should get identical mileage on the highway. If you tow or haul, the 350 will probably get a little better highway mileage.