i'm thinking about getting the GM performance parts 350H.O. crate engine(summit part #NAL-12486041) and mateing it to a SD vortech head TPI intake manifold and a basically stock 92 speed density TPI system with some new injectors etc. the engine is rated at 330hp/380tq. do u think these are the numbers i'd c with this setup??? also what kind of 1/4mile times do u think i'd c with a 2400stall tc 700r4 and 3.73 rear???

 

http://www.sdpc2000.com/cart.asp?act...art&catid=1577 go look it up

Remember that they had to tweeeek it out to the max to get those numbers. Read the fine print REAL CAREFULLY before laying out the long green.

 

yea but that 360hp SD engine isn't the same as long block as the GMPP 350HO the heads are the same but the cam is a little smaller in the 350HO and the 350HO is a 4 bolt main compared to the SD which is a 2 bolt not to mention the price of the SD engine is $1000 more then the 350HO motor

 

The 350 HO is rated at 330 HP gross flywheel with a 650 CFM carb and headers. With a TPI, they weren't able to get 300 flywheel gross.

So, they started "tweaking" in an attempt to get the HP close to the carb #'s. What they ended up with is the engine RB linked. The heads alone have about $500 worth of upgrades, the cam is much better than the HO (roller, for one thing, with roller rockers to boot). The 2-bolt vs. 4-bolt is nothing at these power levels.

If you want a new engine with Vortec heads topped by TPI, start with the SDPC Vortec TPI engine. If you don't, the $1000 you "saved" by getting the 350 HO will disappear quickly as you buy the base and then start doing the things required to get the engine to have the power advertised. No matter what you do, the "ups" and "extras" are going to add up.

 

price everything out first... the fastburn 385 has some really nice numbers if your base plan creeps towards the $4000 mark

 

well i'm only looking to spend $2500 TOPS on the long block b/c i've been following a post in the power adder board about a bbs single or dual turbo package for around $4000. basically i juat want to set myself up wit a nice strong engine combo that will last with aroud 5-8psi of turbo boost. thats y i'm really not too worried about how much the tpi will choke the motor b/c eventually that won't matter when i'm dumpin boost down it!! but i do want decent numbers b/c i'm not sure when i will have all of the money for the turbo system. i would really like a 4-bolt main block forgerd crank, rods, and pistons, a set of low compresion iron heads/good cam for the boost to come. but all those internals and labor to put it all together can easily get very expensive very fast.

 

i saw found the bbs turbo system thru a link in the power adders forum. i want one so badly.. TT but ill get the kit minus the turbos, hows about some t-06 or something.. 10 psi is fine for me. now about the money. @ the amount i get monthly from work, minus bills, i get around $300( i work for mah dad). $300 divided by $4000 = 13 months to get it......... dangit. ah i know... i was gunna sell my dirtbike for $2k i was gunna spend that on the sound system but turbos are cooler and better

 

You're starting off on the wrong foot. 1st, you didn't tell us all you had planned. 2nd, the engine you first suggested doesn't meet your own now-stated requirements (it has cast pistons and crank, pm rods, non-FI and non-PA cam, NA compression, etc.). 3rd, when you go power-adder, you need to spend the money on the internals first to handle what you're adding, and build it assuming the power-adder from the beginning for compression and cam (the 350 HO doesn't meet either of those criteria).

Your budget needs an overhaul and reprioritization.

 

five7kid, ur right i didn't explain my total end goal from the beginin sorry. so keepin in mind that i want to use one of the bbs turbo systems at around 5-8 psi what kind of engine should i be looking for. i know four bolt mains are almost a must. as for the rest i'm a little fuzzy. i'm pretty sure i need forged pistons to handle the boost, but do i really need a forged crank and rods since with turbo boost the engine rpm isn't really too much higher then stock. can i get away with a hypereutectic crank and rods. i see summit has speed pro forged pistons for around $300 depending on comprestion ratio. they also have summit brand forged connecting rods for about $500 and summit brand forged crank for about $600. if those parts are good that puts me at about $1400 i'm sure i can find a 4 bolt block at a junk yard for around $200. that puts me at $1600. i then need a machine shop to get the block ready and put it all together. I have no idea what kind of cost to expect there. i'm gonna need rings bearings etc also. any idea of how much all that will be. i'm sure at least $800-$1000 and then after all that i still only have a short block no heads!!! i guess the stock heads could work for now and eventually get a nice port/polish job done new valvles springs etc. what u think?

 

I think car craft got 357/390 out of the 350HO with headers and a 650 carb.

My car went 12.93 and 12.88 @ 105 with the 350HO untouched on street tires.

With the XE274 hydraulic flat tappet cam, proform 1.5 rockers and a compression bump it has gone a best of 12.28 @ 111.85 on street tires.

I love the motor .

 

you can run no more than 5 psi of boost on stock internals and even at that your motor will suffer excessive wear. the forged parts are to protect in case of detonation, very common when boosting.

you'll need or want....
1. anything forged you can afford. pistons, rods, cranck
2. FI. boosting a carb is not common and im sure theres a good reason why
3. High flow fuel system. more air need more fuel
4.upgraded ignition. MSD is my brand of choice, id suggest a boost timing retard device to keep detonation down
5.upgraded oiling system. trubos like to be fedd premium oil, meaning high flow pump and lots of clean oil otherwise you'll ruin them fast

anything i forgot sumone please include