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FrankWest · 03-09-2016, 04:33 PM

Check with these people they are very helpful

http://www.secretsofspeed.com/lion-speed-head.htm

Call Mr. Yapp he is very helpful.

Just be very careful about the increased stress on your old original engine.
The people that increase their compression above 5.5 to 1 usually rebuild the engines otherwise the original old engine components may be over stressed and fail.
But talk to Mr Yapp, over the past 30 years he has done things with Model A engines that you would never believe.

03-09-2016, 04:33 PM	#2
FrankWest Senior Member Join Date: Sep 2013 Posts: 3,157	Re: High Compression Head Check with these people they are very helpful http://www.secretsofspeed.com/lion-speed-head.htm Call Mr. Yapp he is very helpful. Just be very careful about the increased stress on your old original engine. The people that increase their compression above 5.5 to 1 usually rebuild the engines otherwise the original old engine components may be over stressed and fail. But talk to Mr Yapp, over the past 30 years he has done things with Model A engines that you would never believe. Last edited by FrankWest; 03-09-2016 at 07:54 PM.