So I've still been looking, can't help myself, but I've read about as many threads online as I can. Really interested in finding out more info on the tf 170cc 11R heads.. someone mentioned up above. Would those bolt-on out of the box to my factory short block? I didn't see any "piston modification required" notes on them.. Also 53cc combustion chamber.. will that be pump gas friendly ? Wouldn't that be close to 11:1? Could I use a thick enough gasket to keep it at 10:1?
The head comes in two chamber sizes, with either a 56, or 66 cc chamber respectively. if you really are interested in finding out more info on those heads, you'd stop wasting your time reading online threads, and do a simple google search like I just did to find out manufacturer specific information, instead of relying on opinions from people who may or may not know what they are talking about.
These heads are a twisted valve head. Depending on the camshaft you use, piston to valve clearance becomes a potential issue because the valves may not clear because they will not line up with the factory valve reliefs that are in the Pistons.
I wish I had the benefit of a collective forum of older guys like this place has when I was a kid. Instead, I had my circle of stupid friends, and I was just as stupid right along with them . We all plodded along, wasting money trying to get 69 mustangs into the 12's back in the day where there were no heads other than what came on the car, and 14 second quarter miles were typical.
I also wish that Chinese turbo kits were available back then too.
You can buy those heads. Spend 1700.00 on the pair, and until you upgrade the intake, camshaft, and add headers, only realize a 35 hp increase over stock. And after you spend another 1500-2000 on the above mentioned stuff, actually be able to realize the 50-60 hp they’ll give you over the stock heads. And after spending close to 4000 maybe you’ll see 300-330 total horsepower.
Or, you can take the advice you’ve been given by a couple of guys that have already “been there, and done that”, and instead of wasting your money on heads, a cam, intake, and headers,....spend 1600 from LRS on the On3 system that you claim is in your future plans now, and make 350-375.
Seems pretty simple to me.......Spend 4000 to make 300 hp and tear the whole engine apart to do that, or leave the whole thing intact, and BOLT ON. 350 hp for less than half that...Even a caveman can turn a wrench.
The 11r heads will force a piston change at some future point, twist the valves out of their standard relationship with the valve reliefs the factory pistons have, and there’s gonna be some interference sooner or later. AFR heads cost the same, are similar in their power making potential, cost the same, and will never create a p2v issue.
And lastly, while I’m at it......time to go round and round in a circle.
A spool has no business on a street car, unless you want to have a “running off the street in the rain” street car. A spool has no business on a drag car with stock 28 spline axles, unless you figure out how you’re gonna hold them in the axle housing ( think...C clip eliminators). And C clip eliminators are a waste of money on a stock 28 spline axle. Remove the word “ spool” from your future stated plan, unless your “plan” is to have an aftermarket 31 spline axle, and never drive the car on the street.