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Dark_5.0 · 11-10-2005, 09:19 AM

Shimming probably isnt necessary. They should just bolt down and be good to go.

They are a decent upgrade over E7's but not huge. My guess would be about 10-12 RWHP with the added lift of the 1.72 rockers and the GT40 heads.

If you still have the stock intake port the lower intake and there is even more HP to be had.

11-10-2005, 09:19 AM	#2
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: head swap question need help asap Shimming probably isnt necessary. They should just bolt down and be good to go. They are a decent upgrade over E7's but not huge. My guess would be about 10-12 RWHP with the added lift of the 1.72 rockers and the GT40 heads. If you still have the stock intake port the lower intake and there is even more HP to be had. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer