Im buying a 78 camaro from my father and he has a GM 350 crate motor that was never installed that he bought for a truck that he sold before the crate motor was delivered sitting in his garage that hes throwing in with it and I have a couple questions. I tore the motor down to inspect everything since its been sitting for 10+ years and its perfect never been installed. It has 4 bolt mains, stock rods and stock pistons. I have the following parts for it... hooker long tube headers, mallory hyfire iv ignition box, hei dist, holley contender intake, edelbrok performer 1400 carb, mild rv cam. I am buying a set of promaxx performance 64cc heads, comp cams high energy 1.6 roller rockers and running arp head studs. My question is should the stock rods and pistons hold up to a weekend cruiser that might at most see the drag strip a handful of times in its life and spend most of the time going out on dates and to car shows? Im trying to save money and not have to replace the rods and pistons if possible, the motor has low performance heads on it so thats why i am upgrading them.Also im new to building motors and keep seeing people saying total timing, i know about timing advanced or retarted on the dist. but need some help in this area on what should be done to make a fun motor that isnt going to blow up from detonation so any advice and explanations would be greatly appreciated.
Welcome aboard card16969:You have some good parts. But!Did your Dad buy the 260/350 version of the 350? That will make a difference as to what cam you have, and if it's a 2 piece rear main seal.Let us know and we can go from there.... Bob
im not sure if its the 260/350 but it does have the 2 piece rear main seal i can get the block numbers off of it if it helps
Yes, casting numbers will help. Get the ones from the block and the heads.
Ok sorry its taken me so long to respond the last couple days have been crazy and after having to pay for a small medical procedure out of pocket im now changing the direction of the build and am going to keep the stock iron heads and deck them to bump up the compression a little and port and polish them. The block number is 10066036 which when you run it turns out this is a Goodwrench or "targetmaster" crate engine so it is a truly new motor sadly it was made in mexico and not the us lol. The heads are casting number 10066036 which are 76cc heads. After reading the mouse motor build they are 76cc heads with 1.94 1.50 valves which they say if you deck them it takes them down to 73cc and bumps up the compression a little to a whopping 8.4 to 1 and a port job and bowl blend does wonders for them. The Holley intake 300-38 i have turns out after doing research is the same as the stock intake so now im shopping for an intake. The cam that i have thats been sitting on a shelf for a couple years is magically damaged so now im also shopping for a cam and looking at the comp cams 268h.So my questions now are should I keep the stock valves in the head and change to 1.6 rockers to save the money or should i upgrade to 2.02/1.60 valves when i deck the heads and port and polish them?Also what intake do you like? Ive always ran just edelbrock performers but i know some of the other intakes have different advantages and i do want to make the most out of this since im stuck buying the parts.What are your opinions on the comp cams 268h or should i run a different cam. Im not worried about fuel economy as this is just a recreational car/toyI have 2 different carbs in front of me that i can use. A Edelbrock 1400 600cfm electric choke and a Holley 3310-4 750 cfm any opinions?