RHS/ET HEAD ?'s
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Teching In
Joined: Jan 2006
Posts: 28
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From: Mooresville
RHS/ET HEAD ?'s What is the intake port height and how much material is left in the intake port roof on the 210 thru 225 c.c. RHS/ET head? - I'm thinking of doing a raised port head and need to know what is there to work with.
And are there any other 3.900 bore heads that have a lot of material in the intake port roof or have a raised intake port already?
Thanks
And are there any other 3.900 bore heads that have a lot of material in the intake port roof or have a raised intake port already?
Thanks
Why don't you call ET ans ask them your question. I doubt this is a common thing to do and probally a waste of time. Its tough to take a head that is damn near the best around and make drastic improvements to it. Then the intake port wont line up.
A raised runner head can be done but your best bet is to call Cary/craig at ET and he can explain to you if the results will produce any real power.
FYI the 215 head and the 255 head use the same casting. I am sure there is some roon left in the port but where at is the question.
248-668-9390
A raised runner head can be done but your best bet is to call Cary/craig at ET and he can explain to you if the results will produce any real power.
FYI the 215 head and the 255 head use the same casting. I am sure there is some roon left in the port but where at is the question.
248-668-9390
Last edited by JZ'sTA; Feb 16, 2007 at 10:41 AM.
Originally Posted by JZ'sTA
ET makes the heads for RHS. Same head.
Am I wrong on this?
Originally Posted by JRracing
I thought RHS does there own port work on ET castings. If this is the case, then they would be differant from ET's port work I would think...
Am I wrong on this?
Am I wrong on this?
Don't believe so unless they started doing this recentially.
From what I have heard through the grapevine, ET does all the work to the heads.
Teching In
Joined: Nov 2006
Posts: 20
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Originally Posted by JRracing
I thought RHS does there own port work on ET castings. If this is the case, then they would be differant from ET's port work I would think...
Am I wrong on this?
Am I wrong on this?
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No you are correct, they are ET bare castings with RHS's CNC port work. I would call both ETP & RHS to see how much material is left to open up. The 225 cc heads work great just the way they are out of the box. I put a set of them on my cousin's 99' 'Vette' with a new 240/240 @.050 cam, FAST 90/90, and other needed bolt ons to match the engine combo. We used his stock bottom end 93,000 mile short block and had 445 RWHP & 406 RWTQ on seven cylinder's(brand new MSD coil was faulty). My cousin is useing a stock coil for now, but never took it back in to finish getting it tuned. He is now getting a new LS2 based 402 stroker for it to go with the cam and other components bought previously.
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Originally Posted by 1997bird
No you are correct, they are ET bare castings with RHS's CNC port work. I would call both ETP & RHS to see how much material is left to open up. The 225 cc heads work great just the way they are out of the box. I put a set of them on my cousin's 99' 'Vette' with a new 240/240 @.050 cam, FAST 90/90, and other needed bolt ons to match the engine combo. We used his stock bottom end 93,000 mile short block and had 445 RWHP & 406 RWTQ on seven cylinder's(brand new MSD coil was faulty). My cousin is useing a stock coil for now, but never took it back in to finish getting it tuned. He is now getting a new LS2 based 402 stroker for it to go with the cam and other components bought previously.
In that case I would defentially buy the ET heads. I would perfer their ports since its their head. Thats just me. In all reality they are probally very similar in performance.
Originally Posted by JZ'sTA
In that case I would defentially buy the ET heads. I would perfer their ports since its their head. Thats just me. In all reality they are probally very similar in performance.
I bet your right. It would be hard to improve on a company's head when they have spent TONS of time in r&d with there own castings.
That would be like someone taking an AFR bare casting and porting it to out perform AFR's own cnc job.
In one single case, maybe. But not a production cnc'd head and expect it to out perform on everyone else's engine. If that makes sense.
All that I know is that I am sold on the ETP casting design! No middle man = more money in the pocket. At least that is how I plan in the future to continue my purchases. We found out who was making the castings after we had already bought them from RHS.
Last edited by 1997bird; Feb 17, 2007 at 01:12 PM.
I agree. Weather you buy from ET or RHS the design is solid.
It will be a great purchase that will make you very happy.
Other head companys make a great product as well so just gets your goals in order and your budget and make your choice.
I know the guys at ETP take care of me and will continue to get my business.
It will be a great purchase that will make you very happy.
Other head companys make a great product as well so just gets your goals in order and your budget and make your choice.
I know the guys at ETP take care of me and will continue to get my business.
