what should i do forged 347 or a brand new tsp 370
02-18-2009, 03:50 PM
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what should i do forged 347 or a brand new tsp 370 Ok i been doing alot of thinking and im still not sure at all. Should i reuse my block and and buy forged pistons and rods and my block has around 100k on it. Or should i just buy a new tps 370 for around $3000 and have a dependible motor to spray. And im planning on camming it adding some spray i do alot of frag racing. And how much power difference am i looking at for both motors cammed?
02-18-2009, 04:15 PM
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Forged 347 low or high compression whatever u desire, spray it now then save up and put a Procharger on it later.............yes sir this is my plan....OOPs my boys plan
haha!
haha! 
02-18-2009, 05:42 PM
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just wondering
btw i vote 370
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02-18-2009, 06:22 PM
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If bigger cubes is what he wants just build a high compression ls2 402 or a high compression 427 N/A or a iron block 408. With a nicely built trans/stall and rearend plus tire I can see high tens N/A maybe even mid 10s who knows.
02-18-2009, 06:41 PM
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If it's a choice of 347 or 370, I would go 370. If you go Iron block, a 408 is not that much more.
I think 370's go around $2,700 and a 408 goes for around $3,200
I think 370's go around $2,700 and a 408 goes for around $3,200
02-18-2009, 09:34 PM
#11
Why not a 383 ? Less money than the 370 since you already have a block. A 347 will leave you disappointed by spending all that money and making the same power.
The 383 is less money with your block and you save the weight. You can spray it if you want later as well.
The 383 is less money with your block and you save the weight. You can spray it if you want later as well.
02-19-2009, 09:19 AM
#15
Looking at your choices I'd probably take the 370 with the larger bore. That being said saving for a 408 would be by far your best plan!
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Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
02-19-2009, 09:36 AM
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i`m building a 370 right now. the reason being that when i sold my ls1 block i bought a iron block and crank for about 200 more than i sold my old one for, after that the build cost was the same (or about) and i plan on spraying it alot so for me it just seemed like the better choice. now i`m beating my brains out trying to figure out heads but i think i`m leaning torwards trick flow 220 as cast heads
02-19-2009, 09:38 AM
#18
OP: Shoot me a PM with your email and zip and I will get you a couple quotes shot over to you so you can see what the price difference is between the 370 and 408. Also, what are your plans for heads? Let me know and we'll get something put together for you!
Jon
Jon