Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor

7040207

<< < (3/3)

Cliff Ruggles:
Without touching the heads other than good valve/seat work the 041 or 186 castings will EASILY make 1hp/CID with the stock cam.  The stock heads runner cross section and flow are very well designed and very well matched to a 350cid engine with the 350hp camshafts in them.  I doubt if the head porting really brought anything to the table for power improvements and can actually hurt power as larger ports tend to slow down the air velocity some.

There are quite a few other "players" in making power.  For SBC's in particular establishing very tight quench is one of them.  I shoot for .025-.035" here for quench distance decking and squaring the block so the pistons are right at the top of the block at TDC and using thin head gaskets........Cliff

boat196:
The quench was set at .030

Cliff Ruggles:
Very good place to be with a well thought out SBC build.  This will make the engine tend to run cooler, take less timing and less fuel (improved combustion efficiency), and it will make more power than a similar engine with more quench in it......Cliff

Navigation

[0] Message Index

[*] Previous page