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NatL88 · 10-10-2007, 09:10 PM

I know it's a long shot, but how well would a 7afe do with a 5valve head.
As far as my research has taught me, they will bolt up with no questions asked, but the 7A isn't made to rev as high as te 4A without lightening/strengthening internals.
Definitely the rods, I assume crankshaft, and the 20V pistons.
Is all this even worth it compared to stroking a 4AG to maybe 80mm or even 82mm?

Basically I'm designing a slightly torquier 4AG crossed with a freeer-breathing 7A.

10-10-2007, 09:10 PM	#1 (permalink)
NatL88 ubernoob Join Date: Jun 2006 Location: Toronto, Ontario, Canada Posts: 25 Thanks: 1 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	1.8L 20V? I know it's a long shot, but how well would a 7afe do with a 5valve head. As far as my research has taught me, they will bolt up with no questions asked, but the 7A isn't made to rev as high as te 4A without lightening/strengthening internals. Definitely the rods, I assume crankshaft, and the 20V pistons. Is all this even worth it compared to stroking a 4AG to maybe 80mm or even 82mm? Basically I'm designing a slightly torquier 4AG crossed with a freeer-breathing 7A.