Unforgiven
solid fixture here in the forum
Hello Everyone,
I asked Grumpy to delete my original thread because I felt it had gotten waaaaay off topic from its intended
purpose. So we will give it another go!
I have spent about a year researching components to try and put together a nice SBC engine combo. I have been working with a forum member Indycars to see if my combo will work. From the reports that I have seen, I feel that my block will not hold together at the expected levels. A Dart block is planned for next year. For this year, my plan is to have my block sonic checked and if ok,
I will use block filler up to the freeze plugs for a little bit more cylinder stabilization. I will limit the boost to about 6 lbs for this years rebuild. I had originally set a budget of $4000 to add to what I already have for a
"refresh build". I am finding it very hard to stay within that budget! I am closer to $5000. This motor will never see the street. It is in a 7500lbs 4x4 mud truck with a th400 (3000 stall) and 6.17:1 gears and 44" tall tires. note: The gears ratio cannot be changed for my axles. RPM's are the only thing to dictate wheelspeed. This motor operates between 4000-6500 rpm's.
Here is a rundown.
Parts that I have --------------------------- New parts
383 sbc -------------------------------------- machine to 4.040 bore
10.5:1 compression ------------------------- 11.1:1 compression
200 cc Promaxx heads ------------------------- hydraulic cam and lifters and bearings
177 weiand blower ------------------------------- MSD boost master and new dizzy
Predator carb ------------------------------------ Pro Sytems 950 carb E 85
400 nodular crank 3.75 stroke ----------------- Forged ( CP) rotating assembly W/ 6" H beams (internal B)
GM rods 5.7 ----------------------------------- 1 7/8" headers
TRW flat top pistons ------------------------ 7 qt baffled pan and pump
1 5/8" headers (open)
I asked Grumpy to delete my original thread because I felt it had gotten waaaaay off topic from its intended
purpose. So we will give it another go!
I have spent about a year researching components to try and put together a nice SBC engine combo. I have been working with a forum member Indycars to see if my combo will work. From the reports that I have seen, I feel that my block will not hold together at the expected levels. A Dart block is planned for next year. For this year, my plan is to have my block sonic checked and if ok,
I will use block filler up to the freeze plugs for a little bit more cylinder stabilization. I will limit the boost to about 6 lbs for this years rebuild. I had originally set a budget of $4000 to add to what I already have for a
"refresh build". I am finding it very hard to stay within that budget! I am closer to $5000. This motor will never see the street. It is in a 7500lbs 4x4 mud truck with a th400 (3000 stall) and 6.17:1 gears and 44" tall tires. note: The gears ratio cannot be changed for my axles. RPM's are the only thing to dictate wheelspeed. This motor operates between 4000-6500 rpm's.
Here is a rundown.
Parts that I have --------------------------- New parts
383 sbc -------------------------------------- machine to 4.040 bore
10.5:1 compression ------------------------- 11.1:1 compression
200 cc Promaxx heads ------------------------- hydraulic cam and lifters and bearings
177 weiand blower ------------------------------- MSD boost master and new dizzy
Predator carb ------------------------------------ Pro Sytems 950 carb E 85
400 nodular crank 3.75 stroke ----------------- Forged ( CP) rotating assembly W/ 6" H beams (internal B)
GM rods 5.7 ----------------------------------- 1 7/8" headers
TRW flat top pistons ------------------------ 7 qt baffled pan and pump
1 5/8" headers (open)
Attachments
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