how much beter would this 400 sbc be and is it worth $2500???
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
how much beter would this 400 sbc be and is it worth $2500???
i currently have a 355 sbc with 9.7 to 1 comp., ported 083 heads with 2.02 1.60 valves and 1.5 rockers, lt4 hotcam, and hsr intake, and was wondering if this motor would be a big difference and if it is worth the money? http://fresno.craigslist.org/pts/2758558492.html
Im trying too get into the mid to low 11 second quarter mile and the first combo isnt doing it for me.
Im trying too get into the mid to low 11 second quarter mile and the first combo isnt doing it for me.
Senior Member
iTrader: (1)
Joined: Mar 2005
Posts: 696
Likes: 0
From: Springfield,Mo
Car: 87 Berlinetta,work in progress
Engine: 468 BB,still in the build process
Transmission: TH350,3500 stall
Axle/Gears: 9" Ford,learning how to live under
Re: how much beter would this 400 sbc be and is it worth $2500???
That engine almost seems too cheap,unless it has been whooped on pretty hard.It almost has that stuck together out of spare parts aura about it.
I'm always leary of buying from someone I don't know or have a trusted aquantance who knows them.
If your 355 is in good health and has a quality rotating assembly,$2500 would go a long ways towards a better top end.Cubic inches are always king,but a well thought out camshaft/cylinder head combo should make enough power to get you into the 11s,assuming the rest of the car is properly set up.
I'm always leary of buying from someone I don't know or have a trusted aquantance who knows them.
If your 355 is in good health and has a quality rotating assembly,$2500 would go a long ways towards a better top end.Cubic inches are always king,but a well thought out camshaft/cylinder head combo should make enough power to get you into the 11s,assuming the rest of the car is properly set up.
Supreme Member
iTrader: (7)
Joined: Nov 2006
Posts: 3,740
Likes: 15
From: Alamogordo, NM
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9" 3.89
Re: how much beter would this 400 sbc be and is it worth $2500???
That engine almost seems too cheap,unless it has been whooped on pretty hard.It almost has that stuck together out of spare parts aura about it.
I'm always leary of buying from someone I don't know or have a trusted aquantance who knows them.
If your 355 is in good health and has a quality rotating assembly,$2500 would go a long ways towards a better top end.Cubic inches are always king,but a well thought out camshaft/cylinder head combo should make enough power to get you into the 11s,assuming the rest of the car is properly set up.
I'm always leary of buying from someone I don't know or have a trusted aquantance who knows them.
If your 355 is in good health and has a quality rotating assembly,$2500 would go a long ways towards a better top end.Cubic inches are always king,but a well thought out camshaft/cylinder head combo should make enough power to get you into the 11s,assuming the rest of the car is properly set up.
Thread Starter
Member
Joined: Dec 2009
Posts: 143
Likes: 0
From: california
Car: 1991 pontiac firebird formula
Engine: 5.7L HSR, 58mm tb,24lb inj.,lt4 cam
Transmission: 700r4,3000 stall,stage 2 shift
Axle/Gears: 10bolt 3.23 ratio
Re: how much beter would this 400 sbc be and is it worth $2500???
thanks for the input guys but he already sold the motor 
im am running an ls1 posi with 3.42 gears right now. i forgot too change it in my sig. What would be a good cam/head combo for low elevens with my 9.7 to 1 355sbc?
im am running an ls1 posi with 3.42 gears right now. i forgot too change it in my sig. What would be a good cam/head combo for low elevens with my 9.7 to 1 355sbc? 
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