I couldn't pass a Sentra

[thirstybob]

Originally Posted by 44th Miss Inf

The 215 heads are closed chamber (app 100cc) are helping you, as the motor probably had 781s on it (117-119 cc from the ones I have cc’d) The most of these engines stock work out to 7.7-7.8:1 compression originally.

I class raced one of these engines (a later one with 236 casting heads aka peanut ports, and the factory flat intake and the heads and intake will support 546hp.

Before I swapped a thing on the engine, go thru the usual, fuel, timing, etc.

Timing chain good? I believe this was about the time GM used the plastic gears on the chains

Factory cam in these engines was lame

Parts store fuel pumps seem to barely provide enough fuel for a stock non performance engine.

How’s the trans? Rear gearing? Lots of variables

I'm planning a timing set swap.
Edelbrock mechanical fuelpump
Good TH400 with TransGo kit in it.
Not sure of my rear end gearing.

I've been tweaking and tuning for a few months, I think I have as much dialed in as I can.

Didn't the 215 heads offer higher a compression ratio? I thought I read somewhere that they were close to or above 9:1