Chrome Block Hugger
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More Torque Needed out of my 350 Block. Please Help!!?
Not ready to buy a new big block engine but willing to invest a little money into my engine for some added power
I have a 68 Chevy Impala Coupe w/ a 350 4bolt main block. It currently have a 20,000 miles on a rebuilt engine and 350 Turbo Tran. Purchase the budget rebuild kit from Summit Racing. It has a 750 Holley Carb, Edelbrock Gap intake, block and heads are from a 71 Impala and has an Accel Racing Distributor. I also got some chrome hugger style headers that are uninstalled. 10 Bolt rear aswell
Summit Racing I am looking for more Torque and HP for the 350 Block. 1 Guy recommend a Summit Cam and lifters kit (SUM-K1103) and a 2400 B&M Torque Converter. So I purchase it
A local Machine shop said I can put a 400 Crankshaft and Balancer in there with the above summit recommends and it should improve the torque noticeably.
So should I go with the machine shop guy recommend or just what summit said. Or what would you recommend? My Budget is $1000 now in parts ONLY.
Making a 383 (400 crank) will be harder than just putting it in.
To build a 383, engine has to come all a part, back to just bare block.
Crank fitted in (if 400 crank used, then crank machined to fit 350 block)
bottom of a few cyl ground for clearance, oil pan rail on block ground for clearance
Rod bolt shoulders ground down for clearance
383 pistons bought and installed on rods (can't use your 350 pistons)
You don't really need a 383 to gain torque. I have a 355 in my camaro thats got enough torque to pull the front wheels off ground on launch (runs 11.40's @ 118mph at track with a 1.60's 60' time, 0-60mph in 3.2 seconds)
what CC is your heads? I'm betting they are large cc and killing your compression off.
to get the torque out of it, bump compression up to 10:1, install a 2800 stall converter, then installed a cam to match compression (216/228* @.050" or so), and 3.42 or 3.73 rear gears.
Look up under valve covers and get me the head casting #, and i'll tell you what they are and what needs to be done
The summit budget kit is a pretty good one, hyper flat top pistons, 9.35:1 compression with 64 cc heads..
But depending on your head cc you could have 8:1 to 10:1
You will need 62-64cc heads to get good compression and good torque
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