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Search: Posts Made By: GOSFAST
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Forum: C3 Tech/Performance
09-06-2020, 04:41 PM
Replies: 4
Views: 395
Posted By GOSFAST

No "decent" shops are using those "chrome-moly"...

No "decent" shops are using those "chrome-moly" retainers (if that's what's in the photo) any more, just way too heavy!

Step up to some "tool-steel" instead, your springs will be much happier for...
Forum: C3 Tech/Performance
09-06-2020, 03:25 PM
Replies: 24
Views: 15,196
Posted By GOSFAST

On a side note, the nice part of using a roller...

On a side note, the nice part of using a roller cam (retro-hyd OR solid) on the BBC platform is most of the BB's are already set up for the stepped-nose cam and thrust-plate mounting, the early ones...
Forum: C3 Tech/Performance
09-06-2020, 08:39 AM
Replies: 24
Views: 15,196
Posted By GOSFAST

Hi Curt, we do these "full" roller builds all the...

Hi Curt, we do these "full" roller builds all the time for our "100% stock-appearing" customers, most get hyd-roller lifters and 100% "real" roller rockers, Comp Cams. I'll put a couple shots below...
Forum: C3 Tech/Performance
08-12-2020, 09:38 AM
Replies: 12
Views: 1,013
Posted By GOSFAST

One of the main reasons we stay with Comp Cams on...

One of the main reasons we stay with Comp Cams on the retro-roller platform for most of our "100% stock-appearing" builds is due to the fact when the cam has a "-8" at the end of the part number it...
Forum: C3 Tech/Performance
07-11-2020, 09:57 AM
Replies: 59
Views: 4,956
Posted By GOSFAST

Those vacuum secondaries are for "tow-trucks" and...

Those vacuum secondaries are for "tow-trucks" and "RV's", not for anything else!

Thanks, Gary in N.Y.

P.S. Get yourself a good mechanical secondary carb and don't look back!!
Forum: C3 Tech/Performance
07-10-2020, 04:20 PM
Replies: 8
Views: 501
Posted By GOSFAST

Answers: #1 - Large hole not for oiling the...

Answers:
#1 - Large hole not for oiling the chain/gears

#2 - You don't need those "bleed" holes, some people just sleep better having them?

#3 - You should ALWAYS weld the pickup to the pump,...
Forum: C3 Tech/Performance
06-22-2020, 08:57 AM
Replies: 44
Views: 2,629
Posted By GOSFAST

You really don't need "cam buttons" any longer if...

You really don't need "cam buttons" any longer if you prep the block beforehand, you just use a later style thrust-plate and a later stepped-nose cam!

Been doing these for a few years now, no...
Forum: C3 Tech/Performance
01-17-2020, 01:27 PM
Replies: 20
Views: 5,260
Posted By GOSFAST

I would add this, just going hyd-roller will...

I would add this, just going hyd-roller will yield approx 30+ HP by design!

About 95% of all our 100% stock-appearing Vettes get a Comp Cam's -8 "marine" cam, 112*/114* L/S's.

For the street...
Forum: C3 Tech/Performance
01-11-2020, 03:19 PM
Replies: 25
Views: 2,852
Posted By GOSFAST

With the exception of the aluminum heads that's...

With the exception of the aluminum heads that's very similar to one of our 100% stock-appearing builds!

With a set of non-ported, 3/8" valve stem "840's" on a 9.5:1 C.R. we see 510+ HP @ 5900 and...
Forum: C1 & C2 Corvettes
10-01-2019, 08:59 AM
Replies: 11
Views: 1,523
Posted By GOSFAST

Hi Dan, the covers aren't really the problem,...

Hi Dan, the covers aren't really the problem, it's more the rockers!

Over the years here we've done hundreds of 100% stock-appearing BB Vette builds for the resto guys, we were instructed to use...
Forum: C3 Tech/Performance
09-08-2019, 09:10 AM
Replies: 177
Views: 22,397
Posted By GOSFAST

A few years back we had a handful of customers...

A few years back we had a handful of customers seeing the same "glitter" in the oil, not a single failure/issue back then from any of their units, freshened up a few, didn't appear to be any...
Forum: C3 Tech/Performance
09-07-2019, 07:00 AM
Replies: 6
Views: 2,230
Posted By GOSFAST

Hi John, if you need valves you might want to...

Hi John, if you need valves you might want to talk to your machinist about installing some slightly larger ones with some smaller (11/32") stems, you'll pick up some add'l HP with this method!

We...
Forum: C3 Tech/Performance
08-04-2019, 06:59 AM
Replies: 25
Views: 3,135
Posted By GOSFAST

This is an easy operation to accomplish, we've...

This is an easy operation to accomplish, we've been doing 100% restos for over 40 years now and have saved every original number on every block. There was never a time we couldn't get it done. Back...
Forum: C3 Tech/Performance
07-21-2019, 01:06 PM
Replies: 168
Views: 37,208
Posted By GOSFAST

Thanks, Gary in N.Y. P.S. One final "tip",...

Thanks, Gary in N.Y.

P.S. One final "tip", if your roller springs have any "dampeners" between the inners and outers I would toss the Titanium retainers and step down (money-wise) to some...
Forum: C3 Tech/Performance
07-20-2019, 04:20 PM
Replies: 168
Views: 37,208
Posted By GOSFAST

Late to the post but I would add a few 'tips" to...

Late to the post but I would add a few 'tips" to kick around with your machinist.

First would be a real good idea to drill pin-oilers below the wrist pins in those rods (same as the ones in the...
Forum: C3 Tech/Performance
06-29-2019, 09:32 AM
Replies: 48
Views: 7,462
Posted By GOSFAST

Many "decent" aftermarket manifolds all come...

Many "decent" aftermarket manifolds all come pre-slotted, the "decent" mfr's finally caught on after all these years!

We slot EVERY one we use if it's not already done when it arrives. You cannot...
Forum: C3 Tech/Performance
06-14-2019, 08:54 PM
Replies: 79
Views: 12,652
Posted By GOSFAST

If you have plans to run ANY type roller cam, hyd...

If you have plans to run ANY type roller cam, hyd or mech, I would make a recommendation here for you while your machine shop is doing the block work, ask them to prep the block to accept a...
Forum: C3 Tech/Performance
05-28-2019, 06:36 PM
Replies: 47
Views: 7,470
Posted By GOSFAST

Not sure how you're measuring the press but below...

Not sure how you're measuring the press but below is ATI's directions!

ATI damper fit

5. Press fit of the hub to the crankshaft is vital to transfer harmonics to the damper assembly....
Forum: C3 Tech/Performance
05-28-2019, 01:48 PM
Replies: 47
Views: 7,470
Posted By GOSFAST

Adam, make that "under" or you'll need a new...

Adam, make that "under" or you'll need a new balancer!!

(Add) I'm guessing the crank will be somewhere between 1.246" and 1.247". I have seen some variations from these numbers but this generally...
Forum: C3 Tech/Performance
05-28-2019, 11:13 AM
Replies: 47
Views: 7,470
Posted By GOSFAST

This is pretty much right on the money. Anywhere...

This is pretty much right on the money. Anywhere between .0008" and .001" is good on most balancers. You definitely don't want .002", I also wouldn't put .0015" either unless it is a "cast-hub" piece...
Forum: C3 Tech/Performance
05-27-2019, 07:12 PM
Replies: 47
Views: 7,470
Posted By GOSFAST

Hi Adam, the shop is going to need the very EXACT...

Hi Adam, the shop is going to need the very EXACT dimension (exact as in measured with a 1"-2" micrometer) on the crank snout or you may never hit the required press fit!

Thanks, Gary in N.Y.
...
Forum: C3 Tech/Performance
05-24-2019, 12:41 PM
Replies: 7
Views: 1,028
Posted By GOSFAST

Hi Roy, chances are you won't even find those...

Hi Roy, chances are you won't even find those "nylon" gears for sale any longer, been out of service for years now!

We tried to buy up any NOS pieces we could find a couple years ago, came up with...
Forum: C3 Tech/Performance
05-21-2019, 04:41 PM
Replies: 5
Views: 3,185
Posted By GOSFAST

We are a Comp dealer, they have a separate lifter...

We are a Comp dealer, they have a separate lifter number when ordering lifters for the small-base cams.

I would add, try to avoid using any small-base cams to help avoid excessive cam "twist",...
Forum: C3 Tech/Performance
04-14-2019, 08:41 AM
Replies: 22
Views: 14,531
Posted By GOSFAST

We are talking ARP here, the only time they...

We are talking ARP here, the only time they recommend using that 85# number (on a 7/16" fastener") is when using oil as lubricant. Most assemblers use the supplied lube which now happens to be the...
Forum: C3 Tech/Performance
04-13-2019, 07:37 PM
Replies: 22
Views: 14,531
Posted By GOSFAST

Hi Adam, you don't need chamfered washers with...

Hi Adam, you don't need chamfered washers with studs, only when using bolts.

If ARP supplied chamfered washers in the stud kit they can go either way. We have our own assembly rules here just so...
Showing results 1 to 25 of 497
 
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