a proposed 350 parts list?

[Grumpy]

Hello everybody I have bought these parts in accordance with the results obtained from camquest software (except for the cam) I took the results as guide lines to know what I need to buy.
I need any opinions on these parts and what results to expect when assembling. Here is the list of the parts I bought.

1-summit racing stage 3 intake manifold.

2-summit racing distributor.

3-summit racing 750cfm vacuum secondaries carburetor.

4-summit racing ignition box.

5-AFR ELIMINATOR STREET cnc machined HEADS 195CC intake and 75cc combustion chamber.

6-scorpion 1.7 roller rockers.

8-scat rotating assembly 3.48 stroke.

9-ARP Engine bolts set

10-summit racing solid camshaft 298-304 duration circle track race cam and final lift with the 1.7 roller rockers will exceed 0.600 on both sides

11-summit racing street/strip oil pan

12-high pressure/high volume oil pump (melling).

13-summit racing timing gears set (noisy).

Note

Final compression ratio is about 9.4-1

The car will be driven on street and some street racing mated to r-154 manual transmission.

Thanks in advance.

[ Husam/ said ]Hello everybody I have bought these parts in accordance with the results obtained from camquest software (except for the cam) I took the results as guide lines to know what I need to buy.
I need any opinions on these parts and what results to expect when assembling. Here is the list of the parts I bought.

1-summit racing stage 3 intake manifold.

2-summit racing distributor.

3-summit racing 750cfm vacuum secondaries carburetor.

4-summit racing ignition box.

5-AFR ELIMINATOR STREET cnc machined HEADS 195CC intake and 75cc combustion chamber.

6-scorpion 1.7 roller rockers.

(1.6:1
rocker ratio, makes far more sense , and are likely to reduce valve control and cam wear issues)

8-scat rotating assembly 3.48 stroke.

(a 3.75" stroke will get you 40-50 additional ft lbs of torque over most of the rpm range at little additional cost) a cast steel or forged steel rotating assembly with forged rods with 7/16" rod bolts would be a good bet on durability

9-ARP Engine bolts set

10-summit racing solid camshaft 298-304 duration circle track race cam and final lift with the 1.7 roller rockers will exceed 0.600 on both sides

you can,t use that much cam duration, with that low compression ratio
http://www.summitracing.com/parts/sum-ct109/overview/



11-summit racing street/strip oil pan

12-high pressure/high volume oil pump (melling).

13-summit racing timing gears set (noisy).

youll regret that idea (noisy)after a week Id bet money on that, the quite set still makes a noticeable whine its a better choice, but you might just buy a cloyes roller chain drive its going to be less problems

Note

Final compression ratio is about 9.4-1
youll want to match the cam duration and consider the drive train gearing, transmission and car weight carefully

The car will be driven on street and some street racing mated to r-154 manual transmission.
Thanks in advance.
[/quote]

yes you can, easily, ignore the advise but after building nearly 150 plus engines I can assure you its to your benefit to look into those choices with a bit more detailed research or youll be spending cash on new parts rather quickly



http://garage.grumpysperformance.com/index.php?threads/semi-fool-proof-cam-sellection.82/

http://garage.grumpysperformance.com/index.php?threads/rocker-push-rod-wear-issues.9815/

http://garage.grumpysperformance.co...ding-related-links-and-info.10255/#post-55578

http://garage.grumpysperformance.co...-the-charts-calculators-and-basic-math.10705/

http://garage.grumpysperformance.co...1-6-1-ratio-rockers-and-the-pushrods-rub.198/

http://garage.grumpysperformance.co...hing-the-drive-train-to-the-engine-combo.741/

http://garage.grumpysperformance.co...earing-and-trans-choice-made-correctly.11697/

http://garage.grumpysperformance.co...lsa-effects-your-compression-torque-dcr.1070/

http://garage.grumpysperformance.com/index.php?threads/dynamic-vs-static-compression.727/



heres the soft ware dyno guess on that with the crower cam, notice a decent mid rpm torque and about 450 peak hp

heres the same combo with the original summit cam

notice about 430ft lbs/450 hp for the crower, peak power near 6500rpm vs
about 370 ft lbs/430 hp, peaking near 7500 rpm for the summit cam

 

[Grumpy]

you should find this series of articles where they take a basic 350 and build it in stages useful
what seems to be over-looked in many engine builds is simply the fact you'll almost always DEEPLY regret jumping into the engine build with both feet and waving your check book as you sink ever deeper into piles of parts receipts and machine shop bills, rather than stepping back with a legal pad, and a calculator and listing in minute detail exactly what you want to accomplish, and taking the time and effort too list and check out in detail what each machine shop procedure costs, why its required and how much each components costs, what your options are and how each component will add too or benefit the completed combo (or in some cases cause you time and grief)
stepping back and thinking things through in detail and listing the cost and potential problems and finding the solutions BEFORE you dive into the process may be a lot less fun, but in the long term its sure to cost less and result in a far better finished project!
yes you'll ALWAYS NEED to verify clearances carefully when assembling any engine and no, you can,t assume everything will fit just because its part of a component list thats suppose to fit correctly, simply because manufacturing is an imprecise process and mistake do get made occasionally!
if you build enough engines youll eventually see a strong relationship, between higher initial cost and that spending a bit more on heads and rotating assembly and valve train components tends to significantly reduce the problems and increase the engines long term durability.


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http://www.corvettefaq.com/c3/goodwrench/GM Goodwrench 350 test part 1.htm

http://www.corvettefaq.com/c3/goodwrench/gm3502.htm

http://www.corvettefaq.com/c3/goodwrench/gm3503.htm

http://www.corvettefaq.com/c3/goodwrench/gm3504.htm

http://www.corvettefaq.com/c3/goodwrench/gm3505.htm

http://www.corvettefaq.com/c3/goodwrench/gm3506.htm

http://www.corvettefaq.com/c3/goodwrench/gm3507.htm

http://www.corvettefaq.com/c3/goodwrench/gm3508.htm

 

[busterrm]

I agree with grumpy you'll need a cam with quite a bit less seat to seat duration, maybe in the 280 to 290 duration range, with its 0.50 duration say 225 to 235 range. I also agree about the rocker ratios 1.7 is probably too much ratio. I'm using 1.6 in mine and you'll probably have clearance issues with the 1.6 even. I would also go with the smaller chamber in the aluminum heads also, say 64 or 65 cc chamber. I Agree with grumpy on the stroke 3.75 would give you 40 to 50 more foot pounds of torque and horsepower and I think you would be more satisfied with it.