[Goblin]

I really got to thinking yesterday. How heavy would a Dart blocked, or World Products blocked (stroked 5.8) be, compared to a Dart/Worlds stroked 302? Honestly, if its not much... i think i might just invest in a Dart/Worlds 9.500" block, and build something in the 400-430ci range, and go for 600hp on pump gas. I "was" really set on an 8.200" block, and building a 347-363.. or even something in the 380ci range.. but i find myself wanting more stroke.. and its not gonna happen with a 5.0 based motor. Am i looking at a significant amount of more weight? Or will the extra power/torque pick up the slack? Just curious.. this is a big decision, one that i'll have to live with for awhile. Thanks for any help.

[whitefox89]

well i have a basic 357 windsor and i would never go back to a basic 302/306 block. if that gives you any idea.

[Goblin]

Originally Posted by whitefox89 well i have a basic 357 windsor and i would never go back to a basic 302/306 block. if that gives you any idea.

Thats awesome, but whats the weight difference? And i forgot to ask, whats the max amount of cubes that can be pulled from both the Dart and World products blocks, with both 8.200" deck, and the 9.500" deck.

Basically.... 8.200= Max CI? Dart/World. 9.500= Max CI? Dart/World.

Ive seen 470ci from the worlds.. im assuming thats the 351 block? Thanks again for the help!

[**Chris**]

The weight difference is minimal, especially when considering the extra output of the bigger motor..

You would not even notice the weight difference at high speed lauches... maybe during low speed turns....but you'll like the extra power much better.

[Goblin]

This may possibly be the most un-important question ive ever asked, but is there a "sound" difference? Im not worried about it.. but im sure more cubes would probably make more noise... Do big windsors with full exhaust sound like really mean 5.0s? Or even better?

[whitefox89]

better specially with a cam windsor---><---302

[Goblin]

Sweet. Another question.. Im curious how well big inch windsors run with conventional 5.0 EFI intakes? For example.. a TFS-R upper and lower.. with say.. an 80mm TB.. Does the EFI setups run just as well as the carbed setups? Wish i didnt have to ask these questions! Thanks!

[whitefox89]

well you have to buy a specific 5.8 intake since its wider.

and in a nut shell yes im sure efi runs just as well... with alot more money and alot of tuning. this questions been asked alot so dont worry about it. but you will have less of a headache with carb i am sure. but if your dead set on efi, yes it can run just as well. hope that helps.

[Goblin]

Im not completely "dead" set on EFI. The main reason i'd like to stay EFI, is for emission purposes and visual inspection. Im not sure how the inspection here in FL works, but when i lived in AZ.. you couldnt run a carbed setup on a vehicle that had been equipped with EFI from the factory. I like the simplicity of carburetors.. but i want to keep the EFI for safes sake with emissions and inspection, plus i know EFI much better than carbs. Well see... i really hope EFI can provide the same numbers in N/A trim.

[TT86]

Originally Posted by whitefox89 windsor---><---302

Umm.... a 302 is a windsor....

[ryans88gt]

You could also consider the 9.2 inch deck height aftermarket blocks. You can run pretty big cubes with the right set up and have a slightly more compact package and lower center of gravity (also helps a little with hood clearance).

[1/4-horse]

Originally Posted by whitefox89 well you have to buy a specific 5.8 intake since it's wider.

I don't think that's entirely accurate. There are adapter kits out there to use 289/302 intakes on a 351 block, at least for carbed intakes. I'm not up on the efi stuff but I think it's the same bolt pattern, so they "should" work with them too.

Jay

[ujslost]

Originally Posted by 1/4-horse I don't think that's entirely accurate. There are adapter kits out there to use 289/302 intakes on a 351 block, at least for carbed intakes. I'm not up on the efi stuff but I think it's the same bolt pattern, so they "should" work with them too. Jay

I have never seen these adapter kits you talk about, but I would believe that once you buy the adapters, you could have just bought the proper intake to fit the 351. Plus adapters would call for additional gaskets, which makes the margin for leaking gaskets even greater, then if your really serious about power, you have to worry about that damn adapter and extra gasket being properly aligned and not obstructing air/fuel flow.

[baine21225]

just buy an ls1, hahaha

[TT86]

Originally Posted by baine21225 just buy an ls1, hahaha

[408gt91]

im running a 408 with a victor 5.8 and 80mm tb its great!

[Lauri]

Originally Posted by Goblin Thats awesome, but whats the weight difference? And i forgot to ask, whats the max amount of cubes that can be pulled from both the Dart and World products blocks, with both 8.200" deck, and the 9.500" deck. Basically.... 8.200= Max CI? Dart/World.

Dont'n know whats max, but World 371 shortblock is 8,2"

[whitefox89]

Originally Posted by TT86 Umm.... a 302 is a windsor....

you got my point.

[Racinjason81]

i think a 351 based stroker would be better since the 302 based stroker would have to turn higher rpms to match the power a larger displacement engine.the larger engine moves more air and wont need to be spun up high to make power.

[Goblin]

I definetly appreciate the responses! Baine.. trust me, ive thought about it! LOL Everytime i see a vette, i think "i wonder how fun that would be." Anyways, im still not completely clear on the weight difference...? And ive considered a 9.200" block.. but i really think i should go big, or go home if im going to do this. And hood clearance really doesnt bother me.. i'll just run a cowl hood to fix that problem. As far as the "adapter plates," i know theres plenty of EFI intakes that are 351w specific.. and will work great, im just curious on the power differences between EFI and Carb'd on a similarly built combo. Thanks for the help everyone!