The GMPP motor has a street cam that will make more power lower in the RPM band where you drive it on the street offering better manners and throttle response, but lacking in that thumping cam noise everyone likes (they use the GM 'Hot' cam found in EFI cars). It breaks you fix it out of your pocket and file an insurance claim for a refund). The guarantee offered by the engine builder is an insurance policy. You can buy a brand new engine with all new parts warranted by GM (a warranty means Chevy dealership fixes it, or gives you a brand new one no questions asked. There are many 383 motors offered for sale on the internet from independent motor builders that are lower priced, but they do not offer a big cam nor aluminum heads. This strikes me as being an economy engine build in every aspect, except it's asking price. This tells me it is inefficient as you normally pull timing out of an efficient motor because it doesn't need as much lead time to burn the fuel it has ingested. 34 degrees ignition is only two degrees more than stock even though they have a big thumping cam installed (using stock Chevy lifters that are prone to pumping up and also have a limitation on overall maximum valve lift). Doesn't mention the combustion chamber's shape or volume (so the possible gains in quench could be given away by a poor chamber configuration). No indication as to port size or port location (raised or not). No brand name so you know they are the cheapest they can find out of China. My biggest issue is it states aluminum heads. He talks about the rod bolt strength, but he doesn't mention it being an American brand that we all know and trust (ARP), once again buying cheap parts to cut costs. The stock block has been align honed and decked (how much it doesn't say but probably 0.010' to 0.015' which improves quench). Stock crank has in all probability been turned down: though how much I have no idea. Hypers are still cast, just out of a different alloy of aluminum with added silicon. Picture shown with optional tall, perimeter bolt valve covers.This engine requires a 400ci weighted harmonic balancer, and late 350ci weighted flexplate/flywheel.BluePrint Engines recommends a 2000-2400 rpm stall converter.Įverything in this motor is cast except the stock SBC rods.

New valve covers, oil pan and timing cover Brass freeze plugs Dyno test results shipped with engine

536 Exhaust 230 Intake / 240 Exhaust duration.

New cast steel crankshaft Hypereutectic pistons Chevy heavy beam rods with 150,000 PSI bolts Hastings moly rings Melling high volume oil pump Hydraulic roller cam Heavy duty timing setīluePrint Aluminum Hardened retainers and springs 2.02 swirl polished intake valves 1.60 swirl polished exhaust valvesĬam Type: Roller.528 Intake. 0002 straightness and roundness Cylinders are sonic tested for thickness Here's the specs if anyone cares to chime in.Ĥ Bolt main, 1 piece rear main seal Passenger side dipstick Align honed main bearing bore Cylinders honed on computer controlled machine to within. As I said I've been screwed 3x on builds and hoped I could get some valuable feedback from here. I'm looking for someone on the site who could look over the parts list for this crate engine and see if it has value and reliability.

Any large builder will have some failures and they look like they have addressed most of the problems in negative reviews I've read. Summit,Jegs,Speedway and others carry their motors. I also have both an engine stand and a hoist. Actually, I did put a rod through the block.

Blueprint 383 stroker 430 hp