abcx09t

I bought the SD360VTPI. I see some people looking for input on this engine so here is mine:

The engine comes complete with the flexplate and balancer and intake manifold. All brackets from stock bolted right in. In fact it fit everything perfectly with some minor exceptions.

One is the oil pressure gage. I had the large pressure gage to install and it would not fit even with pipe fitting configurations so I had to mill away some of the intake manifold material to make it fit. Need a air grinder for this.

Second is the distributor. The dist. I have has a separate coil and it fits low and close to the intake manifold. So close that the dist cap hold down screw hit the manifold. Need to remove material here too. I did not remove material and the first distributor I had broke, my second may be broke too, but I will be removing material.

I would not get the EGR kit. When you get this engine, you will most likely get a new chip to max the performance. The chip guy will highly recommend getting rid of the EGR. You can leave the EGR system for looks, but you won't need it or use it. This will save you money.

Good news is the engine performs great. As you expect, poor city driving mileage, but I got 20 MPG on the highway. Power is real good too. I autocross and it has lots of power. When the 52mm throttle body and the large runners are installed it will be even better.

1bad91Z

iTrader: (1)

Cool! Any dyno numbers?

abcx09t

No, no dyno numbers at this time. I have a thread in here on my current vibration problem. I do pretty well with the autocross though.
Scott

honkeytonk_man

I installed one of these motors into my '88 IROC and had the same minor installation problems as previously mentioned. I also broke valvesprings!
Two withn minutes of firing it up and another six in all bent a valve too! (I checked lash prior to firing it up). I talked to SDPC and they said this was an isolated incident. They sent me new springs but one of these failed as well. I swapped to crane springs and have had no problems since. I love this motor and think the power, price, economy and drivability are all there. However I will never touch another LT4 valve spring again. I have a complete set sitting on the shelf, wont use 'em. Has anyone else had this happen with one of these engines or did I just get a bunk set of springs. (Now have 15K trouble free on motor)

FYI- I'm no hack mechanic. I am a Pro Marine engineer and diesel mechanic with a degree in Marine engineering. Ive had six 3rd gens and rebuilt more motors than I can count.

88 IROC
SD360VTPI motor
52mm TB
ACCEL runners
Heedeman headers
3 in flowmasters
No emissions
K&N's
Gutted MAF
Cold Air intake
built 700R4
1LE Drive Shaft
3.27 Posi 9 bolt
4wdb
All polyurathane suspension
STB and panhard rod
ROH ZS 17's with BFG 275's

RevItUpZ28

iTrader: (1)

I will be taking my car to get it dyno-tuned and have a truely custom tune performed by the end of summer. I'm very excited to get some dyno numbers.

Engine has been in for a week so far.

SchwarzCamaroRS

I bought the LO5 from SDPC, i had a lil problem with the shipping (they dented my valve cover) but other than that, everything was great... mine was just a longblock, no intake or flexplate.. but it came with a balancer... everything bolted right up on this one, the only parts i bought were the tune up stuff (plugs, wires, cap.. etc...) hoses and the sensors i needed to change over... i get 17mpg average with city/freeway mixed... and i already know im going to be dissapointed with the dyno numbers when i get them, but from a dead stop when the car is warm, i can one wheel peel it all the way through 1st!! haha..

88Camaro350

I got the lo5 from sdpc also. Cept I can peel through second lol. Cam helped A LOT. But the car is for sale...buy it

SchwarzCamaroRS

i want to get some better heads.. maybe #416 and get the hotcam kit... that would help out a lot. ;-)

five7kid

iTrader: (14)

The magazine article about this engine a couple of years ago mentioned some grinding was necessary to clear the Edelbrock runners.

The runners, larger TB, and long-tube 1-3/4" primary headers were required to obtain the 356 HP (which is flywheel gross, not the flywheel net used in the factory ratings).

If I were to do a Vortec/TPI, this is the only way I'd go about it.

88Camaro350

SchwarzCamaroRS:

The motor we bought has 9.6:1 with 64cc heads. You get a set of 416s and you compression will go through the roof.

five7kid

iTrader: (14)

Suggestion: Keep replies to this thread relevant to the SDPC Vortec TPI crate engine. If you have comments about other engines, reply on a thread about that engine or start another thread.

SweetS10v8

If it were 9.6:1 with 64cc and you only switched heads to 58cc chambers the compression would be right about 10.25:1

3rd-gen's 4life

I can't find any info on what heads come on this sd360vtpi other than they are vortech some articals mention fast burn heads???

rusty vango

don't put "416s" on a 350.while they are fine for a 305,not so much on a freefiddy.

Fast355

iTrader: (2)

I had a set of lightly ported 1.94/1.60 valve 601s on a 350. With a mild little 216/216 crane cam it would pull hard to 5,500 rpm and anhilate the tires from a stop. Should I mention this was in a fullsize G-van. Idle-5,000 rpm you really can't touch em with anything except swirl ports.

3rd-gen's 4life

Thanks guys I am so lost when it comes to cam specs etc etc. I absolutely want to keep the tpi set up simply love the look but after I finish my suspension looking for a replacement long block and im a simple man with a simple question can any sbc have a tpi set up? I understand some sbc have forged cranks I know that good trying to do my home work what long block has what for internals etc 350-383 is ok. but to get back to my question sd 360vtpi don't list crank rod or piston style like all the others why? thanks again!!!!!

Z28Smitty

I'm running the SD360VTPI motor in my 92 Z28 with stock TPI and headers. It runs strong and I have no problems smoking the tires. Passed smog inspection with no problem.

Specifications
SDPC Part Number: SD360VTPI
Manufacturer: Scoggin Dickey
Horsepower : 357 @ 4200 RPM
Torque : 416 ft/lbs @ 4200 RPM
Compression Ratio : 9.6 to 1
Camshaft Duration @ .050 : 218/228
Camshaft Lift, I/E : 0.525"/0.525"
Cylinder Block : Cast Iron 4-bolt, 1 Piece Rear Seal
Crankshaft : 3.480", Nodular Iron
Cylinder Heads cc : Vortec, 64cc
Intake Manifold : SDPC TPI Vortec Baseplate
Fuel Injectors : 24# Ford SVO Blue Top