figured you guys may appreciate first gen s10 blazer Oct 9, 2020 0:42:48 GMT -5 90GTVert, 190mech, and 6 more like this
Post by chehystpewpur on Oct 9, 2020 0:42:48 GMT -5
i had this blazer as a beater for about 50-60k miles but it finally died on me about a year and a half ago not bad for 900 bux.
parked it and got a truck i got for a steal on the road. couple months later the frame broke and i welded it to hopefully get through the winter. well it made it to almost march and i said yep its getting ready to break again and took it off the road. i didnt want to risk it coming apart and hurting someone else. lined things up to borrow a car for about a month and went to work. i was going to fix my blazer and do the v8 swap ive been getting pieces for slowly. i had a 72 block 350 that was one of the last hot motors from back in the day. basically rated for 350hp with a fresh rebuild. mild built 700r4 trans with a small stall converter. long tube headers a cast gm performance intake for q jet and an aluminum corvette intake for qjet.
but i had this 1996 chevy truck with the vortec 5.7 and those were the heads i really wanted anyways. they make stupid torque and are the strongest stock small block heads aside from lt1 heads and those have their own set of issues to use them. and i got to thinking man why tear apart 2 good motors to have 1 to use? why do i really need a built hot 350 with sick heads thats gonna end up cranking out 500hp in a 2600lb vehicle. im gonna twist the frame. so i decided to freshen up the vortec 5.7 instead and leave the hot motor for something else.
the vortec stock is rated at 255hp with a factory detune. it comes as 330hp and 350hp in other vehicles and the motor is identical its just the tune. but it makes torque 330 ft lbs at low rpm. the higher power tunes were 350 ft lbs both at 2800 rpms. it made torque off idle. now i decided if im gonna rebuild this one im gonna add a cam so im not always wanting one. i went with a lunati roller cam as the 1996 block is a roller motor. but i went with a torque cam designed to really wake the vortec motors up but idle good and have good vacuum but improve torque with some top end pull too. i replaced all the bearings discovered the block was actually a reman from 2010 so had pretty low miles on it and the cylinder bores were brand new so i didnt mess with those. cleaned out the no sludge that was in it you can see the metal in the lifter valley starting to surface rust after the cleaning because it was that clean inside.
replaced timing chain and cam gear and sprocket as it was deff needed resealed everything new oil pan oil filter relocation kit now as the long tube headers have to be removed to get the oil filter off and on. it has electric fans that almost never come on because she runs cool. the motor is set very low in the vehicle and the motor is far forward because i have nothing between radiator and the belt. distributor is right there and cake to get to everything is accessible and thought out. everything works except the ac but everything is there for it i just need to mount condenser and get hoses made if the ones i have cant be made to work. all gauges work speedo is accurate. i have odb2 port to read codes if i ever get one. cats o2 sensors and mine is rated for california emissions so its technically 50 state legal swap. engine is 2 years newer than vehicle technically but it was actually from 2010 so even newer. better emissions and gas mileage and can pass smog test.
i smoked the 700r4 trans within a month it couldnt hold the torque. so i converted my 4l60e from the truck from 4wd to 2wd and stuck it in behind the motor and now i have mild 4l60e with stock rpm stall converter so i dont lose out on my torque. the cam i have is a step up from the lt4 hot cam from gm performance parts that will support 385hp for my motor. it hasnt been dynoed or tuned yet sadly due to quarantine but i dont need the extra power. im easily making 330-350hp and 400-450 ft lbs of torque. when i get a proper exhaust and h pipe to improve torque it will be 450+ft lbs of torque. i got a set of 3/4 ton springs for it and it still makes those squat hard and the front end is at the limit of suspension on a hard launch when it hits the next gear it picks up more. 0-60 is in the 4-5 second range with this transmission and sticky tires. it does not spin and it has infinite passing power. all while getting 25-35 mpg avg highway at 70 is 25 and 55 mph roads its 35. torque converter will lock at 35mph and doesnt need to unlock for hills. i havent found a hill that will make it unlock.
the videos at night from the passenger seat on first drive are with old trans. the ones in the day are with new trans and 3/4 ton springs but my friend wouldnt floor it like i told him to.