Poodles said:
yes, you are right about more power and having a broader torque curve, but it would no longer be "the biggest steal in the performance car market, PERIOD."
Is the GT3540R turbo worth the money?
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yes, you are right about more power and having a broader torque curve, but it would no longer be "the biggest steal in the performance car market, PERIOD."
probably would be since the new ZO6 motor is hand built anyway...
keep in mind there is next to nothing in common with the LSX series of engine and the old SBC's...
keep in mind there is next to nothing in common with the LSX series of engine and the old SBC's...
gilberjj said:
Wrong chevy boy, The 3rd Gen small block, as it is incorrectly known is a corporate product, not a Chevrolet product.
nosechunks said:
7m heads are not too bad (valves are spaced at a performance-oriented 50° angle, and they flow pretty good out of the box, much better with a little grinding and polishing). Nothing to be ashamed of.
10psi at 10.5:1? Na-t guys do it all the time (or at least close).
9.1:1 stock compression and a bunch shaved off the head (usually out of necessity rather then design). It might not add up to quite 10.5:1 but it's close! And running alot more boost than 10psi.
It's all about the tune...and in particular getting the timing backed-off just enough at max boost, or yeah, you'll go kaboom.
suprabad said:
i really don't think milling the head and block for a metal head gasket will up the compression 1.5 points. unless the head/block was REALLY out of wack. or else turbo guys rebuilding would need to find pistons that are 7:1 as drop-ins. don't forget metal head gaskets are thicker then stock fiber ones. sometimes the compression is actually dropped because of this.
id say 9.5 with normal amount of material removed and a very thin head gasket TOPS. also superchargers heat air more then turbos, and roots style dont have much room for intercooling besides a small heat exchanger and thats what they run on stock 10.5:1 ls1's
Back on the topic.. I was doing sme more reading about the GT35 on Honda-Tech. Its just hear-say,but the big name tuners are saying that the GT35 turbine wheel flows just as well as the bigger P-trim turbine turbine wheel.
P-trim turbine wheel size: inducer-2.54" exducer-2.92"
GT35 turbine wheel size: inducer-2.45" exducer- 2.68"
I'm sure the old P-trim is much heavier.
P-trim turbine wheel size: inducer-2.54" exducer-2.92"
GT35 turbine wheel size: inducer-2.45" exducer- 2.68"
I'm sure the old P-trim is much heavier.
i don't know if i could call the p trim big....it's a great sized turbine for the 7M. it's probably true that the GT35R's turbine matches it in flow....far newer tech.
the new bullseye turbos have some great looking compressor maps, and i wish they would incorporate the variable vane technology (i think thats what they call it) in an aftermarket turbo. Like the turbos in the new 911's
to costly, the parts to make it then the system to control it would drive the cost of the turbo up to high. it would be nice to have though.
how about the new gt4094R? anyone look into that thing?
how about the new gt4094R? anyone look into that thing?
DrJones, did you drive with your GT35 enough to determine how it spooled compared to your SP57? I remember the spool on that SP57 with its .58A/R was outstanding. Were you using the .82 A/R on the GT35?
Any other owners want to commment on spool-up? I remember my SP61GT hitting 15psi in 4th gear at 3300rpm's. Any one try that with the GT35?? I was very satisified how the SP61GT turbo spooled with the stock manifold.
Any other owners want to commment on spool-up? I remember my SP61GT hitting 15psi in 4th gear at 3300rpm's. Any one try that with the GT35?? I was very satisified how the SP61GT turbo spooled with the stock manifold.
MRSUPRA said:
nope, i never had the chance. :3d_frown:
yup, i had the ATP .82 turbine housing....actually, i still have it if anyone wants it...ceramic coated too!
how much? looks like it could be the next step upgrade for anyone not happy with the power from a 35R. spool of a 4088 with flow of a gt42 sounds pretty good.