ETP 215's VS TSP PRC 200cc Terminator Heads or others for a 346
08-06-2006, 07:57 PM
#21
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Go with the terminators.....a FAST 90/90, port the intake, get an electric water pump and you'll be at 500 or more. I made 490 with an out of the box FAST 90, no electric water pump, and a steel driveshaft. My compression is only 10.8-1
08-06-2006, 11:12 PM
#22
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TRMN8R, thanks for your imput man, I am probally going to pull the plug and buy the terminator heads tomorrow, but I have one last question.
When I talked with TSP they said that the terminators would not make the peak numbers as there stage 2 prc head(I think that was the one) but would make more tq and low end....is there any truth to that?
Thanks man.
When I talked with TSP they said that the terminators would not make the peak numbers as there stage 2 prc head(I think that was the one) but would make more tq and low end....is there any truth to that?
Thanks man.
08-06-2006, 11:36 PM
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tsp made 480rwhp ms4 cam prc cnc ls6 stg2 90/90
trmin8r made 490rwhp with less compression ms3 cam tsp terminators 200cc
the smaller port makes more torque and horsepower from the r&d up above
trmin8r made 490rwhp with less compression ms3 cam tsp terminators 200cc
the smaller port makes more torque and horsepower from the r&d up above
08-07-2006, 01:39 PM
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Originally Posted by nightmarevette
TRMN8R, thanks for your imput man, I am probally going to pull the plug and buy the terminator heads tomorrow, but I have one last question.
When I talked with TSP they said that the terminators would not make the peak numbers as there stage 2 prc head(I think that was the one) but would make more tq and low end....is there any truth to that? Thanks man.
When I talked with TSP they said that the terminators would not make the peak numbers as there stage 2 prc head(I think that was the one) but would make more tq and low end....is there any truth to that?
Thanks man.Hmmm, that I'm not sure on. But I do know I made good power with the terminators. I'd get the terminators if I were in your shoes
08-07-2006, 02:05 PM
#27
Originally Posted by nightmarevette
When I talked with TSP they said that the terminators would not make the peak numbers as there stage 2 prc head(I think that was the one) but would make more tq and low end....is there any truth to that? Thanks man.
Thanks man.The PRC Stage 2s are like 237cc ports. However, they only outflow the 200cc Terminators by a few CFM... like 6-7. 200cc will not choke out a 346cid engine, so I'm pretty sure the Terminators will be pretty close in peak power if not more due to the added velocity (and better air-fuel atomization and throttle response).
It's sort of the difference between the AFR 205s and 225s (205 vs 229cc). At low lifts, they flow the same, but at peak, the 205s flow about 300 and the 225s are around 310 on a 3.9" bore. The extra airflow of the 225s makes a little bit more uptop and they equal out under the curve. The added velocity doesn't show up on the dyno but it does with the feel on the street (albeit, a very minimal difference). The PRC LS6s (237 vs 200) have a 37cc advantage versus the 24cc the AFR 225 enjoys on the 205, but the flow difference isn't as pronounced. I'd have to say the Terminators are going to make a lot more average power and probably within 2-5HP on the topend.
Spring for the Terminators... will match up better with an MS3 (smaller runner will add velocity to the longer duration, providing better power).
The ETP heads are nice, but for the money, the Terminators are a good option.
Last edited by JakeFusion; 08-07-2006 at 02:26 PM.
08-07-2006, 03:01 PM
#28
well i had problems with tsp heads leaking coolant into the cylinders..
cost me extra down time and $ they made good on the heads but i was still out gaskets install money etc etc..switched to some etp 215 heads and made
30 more rwhp and 22rwt( did 480rwhp in an auto car with a 4000 stall) over the tsp heads on my setup tsp is a respectable company and they stand behind there heads and i am not trying to flame them at all as i got my shortblock from them over a year and a half ago and it runs great so just take it for what this info is worth.
and what my exp with there heads were..... just my .02 ....
cost me extra down time and $ they made good on the heads but i was still out gaskets install money etc etc..switched to some etp 215 heads and made
30 more rwhp and 22rwt( did 480rwhp in an auto car with a 4000 stall) over the tsp heads on my setup tsp is a respectable company and they stand behind there heads and i am not trying to flame them at all as i got my shortblock from them over a year and a half ago and it runs great so just take it for what this info is worth.
and what my exp with there heads were..... just my .02 ....
08-07-2006, 10:45 PM
#31
Originally Posted by BAM-BAM
well i had problems with tsp heads leaking coolant into the cylinders..
cost me extra down time and $ they made good on the heads but i was still out gaskets install money etc etc..switched to some etp 215 heads and made
30 more rwhp and 22rwt( did 480rwhp in an auto car with a 4000 stall) over the tsp heads on my setup tsp is a respectable company and they stand behind there heads and i am not trying to flame them at all as i got my shortblock from them over a year and a half ago and it runs great so just take it for what this info is worth.
and what my exp with there heads were..... just my .02 ....
cost me extra down time and $ they made good on the heads but i was still out gaskets install money etc etc..switched to some etp 215 heads and made
30 more rwhp and 22rwt( did 480rwhp in an auto car with a 4000 stall) over the tsp heads on my setup tsp is a respectable company and they stand behind there heads and i am not trying to flame them at all as i got my shortblock from them over a year and a half ago and it runs great so just take it for what this info is worth.
and what my exp with there heads were..... just my .02 ....
08-08-2006, 12:31 PM
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Originally Posted by PewterZ28
480?!? Details please...CI, Trans, Rear, Gears, Intake, etc. 480 is a rediculous number for a 346ci heads/cam M6, let alone an auto.
theres his setup
08-08-2006, 06:46 PM
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Originally Posted by nightmarevette
Yeah I have a 02 z06 with a ms3 cam, long tubes, ud pulley, air intake, catback, tune. I want to stay n/a. So I hear that ET makes some of the best heads out there but I was wondering if there would be any difference in numbers between the ET 215's and the texas speed prc 200cc terminator heads? Which would be better to go with? I am trying to get over 500 to the wheels so keep that in mind. Also, I am not conscerned about $$, I just want the best possible hp/tq. Thanks guys.
