2QUIK4U

iTrader: (1)

I need a rebuild soon, and i was browsing crate long blocks and came across the scoggin dickey 360HP TPI Vortec Hi performance Engine (part# SD360VTPI) Here is the Description:

"Our all new Vortec TPI Custom Crate Engine will bring new life to your TPI equipped vehicle. The brand new GM crate engine assembly is fitted with a powerful hydraulic roller camshaft and topped off with our exclusive TPI Vortec Baseplate.
The proven combination produces 357 horsepower and 416 ft/lbs of torque. Requires the use of EGR kit SD3816, headers and 350 injectors"
Dyno tested with Edelbrock runners, 52mm throttle body and 1 7/8” headers.
Specifications:
SDPC Part Number: SD360VTPI
Manufacturer: Scoggin Dickey Parts Center
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 2-bolt, 1 Piece Rear Seal
Crankshaft : 3.480", Nodular Iron
Cylinder Heads cc : Vortec, 64cc
Intake Manifold : SDPC TPI Vortec Baseplate



I have some money into my TPI already and im not going to a carb. I have 2 year old injectors and a BBK 52mmTB... Can i rebuild my current motor with similar parts for cheaper??? Im no engine builder so i need a professional to do this....

FactoryFreak

iTrader: (2)

If you could do it yourself it would be an easy rebuild for under $3700

vladicore

you could build a monster for 3700$. for that amount of money you could get per say a zz4 short block(since you say you cant build one)( @ 1900 last time i looked) a really good set of head ( mabey not afr's... but edelbrock, twisted wedge, brodix ( b/w 700 - 1300 depending on if you want aluminum or cast iron and your preference) then throw your tuned port on top w/ just to say a lt4 hotcam kit and im sure youd be short side of 3700 and probly more hp and torque then the one you listed.
i mean hell for 3700 you could buy a zz4, sell the intake and buy SD vortec to tpi intake for @ 400 or whatever it is now, throw on your tpi setup and have id esimate 20- 30 more hp and 30 - 40 more foot pounds of torque.

2QUIK4U

iTrader: (1)

The ZZ4 short block ive been seeing lately is $2100-$2200 without shipping. I can get a stock L98 short block (9.1 to 1 compression) for $1150 no shipping. I heard the vortec heads work good with a mild TPI so that's why i want them along with the intake. I can get the complete heads/intake and gaskets with the fasteners for $1300. I will still need a cam and all the other odds and ends. Im just wondering if I can rebuild my L98 (short block) to the specs above (9.6 to 1 compression) And just order the top half for $1300 with a cam and maybe some roller rockers, will it be cheaper?.. I think it might be. What does it cost to rebuild my short block to 9.6 to 1 ?, at an honest machine shop if i yank the motor myself?
Can i put better parts in for the same price? (forged pistons etc...)

thanx for the info guys

vladicore

unless you plan on spraying it id say dont worry about spending 500 dollors on forged pistons and another 300 + on rods. if you can get a 9.1 to 1 shortblock that should be fine and good for pump gas. you dont say what heads you are going to get but im assuming they are 64cc heads if you saying 9.1 to 1. but even just slightly ported l98 heads actually flow very well and make good power. ive had good luck with my old l98 heads ( been on 2 different motors) after porting them. there are literally hundreds of combos out there it just depends on your $$$$ and parts preference ( which everyones is different) and what you intend on doing w/ the car. driver? street strip? strip only? ect.....

2QUIK4U

iTrader: (1)

I do plan on spraying it with a 150 shot. I have sprayed my stocker L98 over 100 times now, and its still running strong. I probably won't need the forged pistons if it holds up like this one. Im going with the 64cc vortec heads.
Heres the description for the heads and intake for $1300:

"The upgraded, roller heads have been modified to accept our heavy duty Z28 valve springs with lightweight LT4 retainers. This produces a high reving cylinder head that can handle up to 0.575" lift hydraulic roller camshafts.
This kit includes Our Upgraded Vortec cylinder heads #SD8060A, head gaskets, head bolts, rocker arms, SDPC TPI Vortec Intake Manifold #12498060, intake gaskets and 12 point intake bolts.
Note: Includes our #SD3816 EGR kit for installing the EGR system with our Vortec TPI manifold with headers, headers not included."

I was thinking of that and rebuilding the short block with a carefully selected camshaft and roller rockers for the heads..
It will be a street/strip car. I want at least 350 HP and 425 lbs of torque if possible naturally aspirated. I want Low 13's on pump gas and high 11's on laughing gas

vladicore

350hp and 425 ft ponds w/ that setup at the fly wheel is totally obtainable. the stock zz4 w/ only a lil more compression and the zz4 cam at the flywheel puts out 355hp and 405 tq. and they use a dual plane intake and 650 carb n headers to get those numbers. adding tpi and a more radical came you should be over your desired numbers ( agin at the flywheel not rear wheels)
expect @ 15 - 20% loss through drivetrain depending on tranny driveshaft gears and tire size n weight.

vladicore

oh btw i love your red z28 looks exactly like my 91, but i wish i had your hood

2QUIK4U

iTrader: (1)

Thanks man. I think i have a game plan on what im gonna do. The motor i got now is still running pretty good, so i'll wait till she blows.

brianp454

2Quick,

If you're interested in a great value, avoiding a lot of hassle, and leveraging your existing stuff heavily you may want to look into the 350CID/330HP crate engine that GM offers. It's a solid setup with a full long block. Best yet, it costs about $2300! That will free up $400 for the Scoggin (sp?) base plate, a set of large tube runners (SLP's can be had for $240 if you shop around), and still have you way under $3,700. Spend a little time and energy porting the plenum and even more time roasting some tires!

Please don't discount the hassle reduction factor. This idea will put you in an engine with much better breathing capacity than the L98's ever could do, even with heavy porting.

If you aren't a mechanic, a good long block setup like this will make the swap much easier. I've been at this sort of thing a long time and have learned some hard lessons. One of the traps folks often get caught in is going too far. Do you really need a 450HP small block? Some folks might give a 330HP rated engine a hard time, but it is a REAL solid 330HP. And hey, another opion is to skip the TPI mods costing about $650+ and go striaght for a HSR (use your 52mm TB, get the intake, plenum, and fuel rail for the HSR and enjoy a serious top end boost)! It may even be cheaper than the TPI parts.

If you want to spend to $3700, you may want to spend it on the exhaust or maybe a nitrous kit...

3rd-gen's 4life

I have a question about sd360vtpi this seems to be the best message board for this but anyone find any detailed information as to what rods or pistons used and looks to be iron heads for this crate motor? and one more question if going to a zz383 are fast burn heads vortech? in style. over all looks good but any cons to this set up?