View Poll Results: What setup of a 408 would you pick?
#1- Build motor completely N/A for ever. With 11.1 comp. Shooting for 500 hp/tq
90
23.14%
#2- Build motor with blower parts and low compression so in (2 years) you could get a blower.
76
19.54%
#3- Build motor same as #1 but add some nitrious type parts and then maybe put a bootle on it.
223
57.33%
Voters: 389. You may not vote on this poll
Poll: What type of 408 would you build?
Im curious about getting a 408 built. Approx what does Futral cost to build a nice 408 for 500 ish threw an A4? Someone give me a rough price please.....
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Teching In
Joined: Sep 2005
Posts: 25
Likes: 0
From: Central North Carolina
My son put a 408 FE short block built by Horsepower Engineering in Houston with AFR big-port heads into our '98 Camaro. At 11.5:1 it will never run any supercharger but it will have a lot of nitrous on it.
On the other hand, I did a compromise on my ZO6: had a C5R block 427 built up for it with only a 10:2 c.r. so I could supercharge it at bit. ((I had a Magnusen on the stock 346 (((10.5 c.r.)) for two years before I replaced it with the 427 - it would run up to 6.5 lbs of boost with no detonation on pump gas: I figured the 10.2 would give me good power initially and I could eventually get at least 7-8 lbs of boost on it , maybe more).
It did not suffer that much N.A. because of the lower compression ratio: 507 RWHP through cats and full exhaust vs. about 525-530 I would have expected at 11:1 (I don't have an extreme cam - driveability and low end torque are the goals). I just put a D1SC on it and have been changing pulley sizes slowly, sort of sneaking up eventually to whatever gives me detonation.
On the other hand, I did a compromise on my ZO6: had a C5R block 427 built up for it with only a 10:2 c.r. so I could supercharge it at bit. ((I had a Magnusen on the stock 346 (((10.5 c.r.)) for two years before I replaced it with the 427 - it would run up to 6.5 lbs of boost with no detonation on pump gas: I figured the 10.2 would give me good power initially and I could eventually get at least 7-8 lbs of boost on it , maybe more).
It did not suffer that much N.A. because of the lower compression ratio: 507 RWHP through cats and full exhaust vs. about 525-530 I would have expected at 11:1 (I don't have an extreme cam - driveability and low end torque are the goals). I just put a D1SC on it and have been changing pulley sizes slowly, sort of sneaking up eventually to whatever gives me detonation.
Teching In
Joined: Sep 2005
Posts: 25
Likes: 0
From: Central North Carolina
Originally Posted by Superman09
Im curious about getting a 408 built. Approx what does Futral cost to build a nice 408 for 500 ish threw an A4? Someone give me a rough price please.....
Originally Posted by Superman09
Im curious about getting a 408 built. Approx what does Futral cost to build a nice 408 for 500 ish threw an A4? Someone give me a rough price please.....
I can remember off the top of my head.
Build NA. 500 rwhp is a lot of power. You can always add a 100 shot once you have the suspension and tires to hook it up. Building a nitrous motor doesn't make sense unless you are certain the rest of car is going to be set-up to handle over 600 rwhp.
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I remeber that car there. He also did my motor. Allen really knows his ****. My car is a stock bottom end TFS heads, Futral custom cam, all supporting mods for H/C/I, Built 4L60E with a PTC4400rpm stall, Strange 12 bolt with 4.11 gears. The car has ran a best of 11.30@120mph with a 1.5460ft. and she has some left in her. It's right on par on where Allen said it would do..
TECH Regular
Joined: Mar 2006
Posts: 471
Likes: 0
From: Rolesville, NC
Lots of good options posted.
I am a fan of NA.
My choice:
LS2 402
AFR 205s milled to 60.5
Still working on cam possibilities:
224/230 609/604 110+2 XFI
224/228 581/588 110+2 XFI / XER
or ??
Daily Dry sump system
Fast92/92
Compression hopefully in the 12:1 range or more?
run 100 octane or E85 Race fuel ( not the pump crap )
I am a fan of NA.
My choice:
LS2 402
AFR 205s milled to 60.5
Still working on cam possibilities:
224/230 609/604 110+2 XFI
224/228 581/588 110+2 XFI / XER
or ??
Daily Dry sump system
Fast92/92
Compression hopefully in the 12:1 range or more?
run 100 octane or E85 Race fuel ( not the pump crap )
TECH Regular
Joined: Mar 2006
Posts: 471
Likes: 0
From: Rolesville, NC
I went with a 408 and thought it would also be two years before I got a boost application. Now in under a year just keeping my ear out I have a D1SC and a 408 trust me it was worth the wait.
I went with the Lingenfelter 100mm, because the outside diameter was a few mm smaller than the others. Since TSP never made their 100 lid , I was able to use the Fast Toys lid that I modified. I seriously considered SD but my tuner Mike Norris discouraged me.