[rmackintosh]

I have a set of TPiS Ported Heads. I bought them on a motor that I used in the race car. I had a VERY reputable NHRA engine builder rebuild the heads and give them a good valve job and then ran them in my car with the matched TPiS ZZ9 cam for a season. Roughly 5 race weekends....no street time.

Never dyno'd it, but it was probably in the neighborhood of 350 RWHP with this....new upgrades.....same but 'o meter today is 400 RWHP so that is my best guess. All stock bottom end and top end.

The following is from TPiS's web site:

These heads are factory castings that are completely inspected before any work is started. They are then given to our porting wizard. We install a 2.00" intake and a 1.56" exhaust valve. We use only Manley Premium Stainless Steel Valves. Each head is ported for max performance and given a 3 angle valve job. Then they are cc'd, milled, flow-benched and assembled with new guideplates, springs, and lightweight retainers. These are a great value in a stock casting.
LT1 Flow numbers in .100 increments for the stock castings are as follows: 58, 115, 177, 214, 214, 214. Our ported LT1 heads with a 2.00/1.56 valve flows the following 70, 145, 203, 241, 265, 277. As you can see we get some great numbers out of these heads, and at $1250/exchange it's a tough head to beat.

They charge $1250 for the service....plus a core. Say $200 for a good core off of eBay...so $1450 new.

I would like to get $900 obo out of these heads.....

Lemme know (IMG:http://www.frrax.com/rrforum/style_emoticons/default/cool.gif)

[SVTHuh]

I really need heads for my new motor, but I don't know of many people running the TPIS heads and was really leaning towards the A.I. CNC heads.. Do you have any pics of the porting work thats done? I only want to buy heads once as you can imagine.

Thanks

[rmackintosh]

I really need heads for my new motor, but I don't know of many people running the TPIS heads and was really leaning towards the A.I. CNC heads.. Do you have any pics of the porting work thats done? I only want to buy heads once as you can imagine.

Thanks

The TPiS heads were very nice...the machine shop I took them to...a big time drag race shop.....was impressed.....but I replaced them with an Ai head/cam package and gained probably 40 HP. If you are gonna want to "buy heads once" and get a set that you won't ever replace, I would go with Ai or Lloyd heads. These are more of a good value for those looking for a good bump in performance, but don't want to lay down the $2-3K it will take to make a good set of Ai heads.

I can get some pics...I will try later this week to put some up.

[AndyJ]

I really need heads for my new motor, but I don't know of many people running the TPIS heads and was really leaning towards the A.I. CNC heads.. Do you have any pics of the porting work thats done? I only want to buy heads once as you can imagine.

Thanks

The TPiS heads were very nice...the machine shop I took them to...a big time drag race shop.....was impressed.....but I replaced them with an Ai head/cam package and gained probably 40 HP. If you are gonna want to "buy heads once" and get a set that you won't ever replace, I would go with Ai or Lloyd heads. These are more of a good value for those looking for a good bump in performance, but don't want to lay down the $2-3K it will take to make a good set of Ai heads.

I can get some pics...I will try later this week to put some up.

I have the Lloyd Elliot package on the ORR car -- hard to beat for the money as you get a matched cam as well --but it will still set you back $2k.

$900 is a bargain on this set Randy... plus they are run in. My first set blew on the dyno because a hole in one of the water passages.